<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <html> <meta name="GENERATOR" content="TtHgold 4.00"> <style type="text/css"> div.p { margin-top: 7pt;}</style> <style type="text/css"><!-- td div.comp { margin-top: -0.6ex; margin-bottom: -1ex;} td div.comb { margin-top: -0.6ex; margin-bottom: -.6ex;} td div.hrcomp { line-height: 0.9; margin-top: -0.8ex; margin-bottom: -1ex;} td div.norm {line-height:normal;} span.roman {font-family: serif; font-style: normal; font-weight: normal;} span.overacc2 {position: relative; left: .8em; top: -1.2ex;} span.overacc1 {position: relative; left: .6em; top: -1.2ex;} --></style> <meta http-equiv=Content-Type content="text/html; charset=windows-1250"> <font face="verdana,arial,georgia"> <body bgcolor=white lang=PL link=blue vlink=blue style='tab-interval:35.4pt'> <!--[if gte mso 9]><xml> <v:background id="_x0000_s1025" o:bwmode="white" o:targetscreensize="800,600"> </v:background></xml><![endif]--> <div class="p"><!----></div> <div class="p"><!----></div> <div class="p"><!----></div> <div class="p"><!----></div> <center> <div class="p"><!----></div> <div class="p"><!----></div> <title>Physics Faculty Seminars on\ Modern Trends in Physics Research</title> <h1 align="center">Physics Faculty Seminars on<br />Modern Trends in Physics Research </h1> <div class="p"><!----></div> <font size="+2"><font color="#FF0000">Seminars start usually at 13:00 on Wednesdays<br />in room 16 (in front of dean's office).</font></font> <div class="p"><!----></div> <font size="+2"><font color="#FF0000">Everyone is most welcome to give a talk!</font></font> <div class="p"><!----></div> Maciej Krawczyk (MK), Adam Miranowicz (AM), and MichaB Banaszak (MB) <div class="p"><!----></div> Physics Faculty of Adam Mickiewicz University <div class="p"><!----></div> Collegium Physicum, ul. Umultowska 85, PoznaD <div class="p"><!----></div> </center> <h2>Forthcoming talks</h2> <div class="p"><!----></div> <ol type="1"> <li> /397/ <div class="p"><!----></div> Data: [roda 2018.09.5, godz. 13:00 <div class="p"><!----></div> Prelegent: <b>Dr Karol Bartkiewicz</b> <div class="p"><!----></div> Afiliacja: ZakBad Optyki Nieliniowej, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Seminarium habilitacyjne</font> <div class="p"><!----></div> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> Seminar language: Polish <div class="p"><!----></div> </li> <li> /398/ <div class="p"><!----></div> Data: [roda 2018.09.12, godz. 13:00 <div class="p"><!----></div> Prelegent: <b>Dr Mateusz KempiDski</b> <div class="p"><!----></div> Afiliacja: ZakBad Fizyki Dielektrykw, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Seminarium habilitacyjne</font> <div class="p"><!----></div> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> Seminar language: Polish <div class="p"><!----></div> </li> <li> /399/ <div class="p"><!----></div> Date: Wednesday 2012.09.19 at 13:00 <div class="p"><!----></div> Speaker: Dr hab. <b>Marcin ZiBek</b> <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Seminarium profesorskie</font> <div class="p"><!----></div> </li> <li> /400/ <div class="p"><!----></div> Date: Tuesday 2018.09.26 at 13:00 <div class="p"><!----></div> Speaker: <b>Dr. Ievgen I. Arkhipov</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palacky University and Institute of Physics of CAS, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Complete characterization of nonclassicality of Gaussian states of light by means of intensity moments</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Nonclassicality of light plays a crucial role in the field of quantum optics. The discovery of the nonclassical properties of light has led to the establishment of new branches of quantum physics, e.g., quantum information theory. One of the most known form of the nonclassicality of light is the entanglement, where different modes of quantum fields exhibit quantum correlations which have no analogue in the classical optics. Though a lot of progress has been made in the theory of the nonclassicality of the Gaussian states, still, the problem, how one can directly certify the nonclassicality of the Gaussian states in the experiment with the least available sources, has not been solved yet. During the seminar, I will present a new experimental method for complete identification of nonclassicality of Gaussian states of light in the whole phase space. The proposed method relies on nonclassicality witnesses written in terms of measured integrated intensity moments up to the second order, provided that appropriate local coherent displacements are applied to the state under consideration.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> Seminar language: English <div class="p"><!----></div> <div class="p"><!----></div> </li> </ol> <div class="p"><!----></div> <h2>Former talks</h2> <div class="p"><!----></div> <ol type="1"> <li> /396/ <div class="p"><!----></div> Date: Wednesday 2018.08.8 <div class="p"><!----></div> Speaker: <b>Doc. Karel Lemr</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Multiphoton experiments in Olomouc</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk will present the current state of the multiphoton quantum laboratory in Olomouc. I shall summarize recent experiments with three and four photons as quantum information carriers. Specifically, I will discuss our experiments on collective entanglement witnesses, quantum router and controlled quantum teleportation.</blockquote> <div class="p"><!----></div> Chair: Dr Karol Bartkiewicz <div class="p"><!----></div> </li> <li> /395/ <div class="p"><!----></div> Date: Monday 2018.07.23 <div class="p"><!----></div> Speaker: <b>M.Sc. Jessica Taylor Flach</b> <div class="p"><!----></div> Affiliation: Department of Chemistry, University of Wisconsin Madison, USA <div class="p"><!----></div> Title: <font color="#0000FF">Two-dimensional white-light spectroscopy and its applications for understanding carbon nanotube and perovskite photophysics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This talk will give a general overview of the techniques involved in using two-dimensional electronic spectroscopy (2D-ES) and illustrate how 2D-ES can be used to study energy and charge transfer processes in materials of interest for next generation photovoltaics. The first part of this talk will focus on understanding the photophysics of carbon nanotube thin films and devices. Using our two-dimensional white-light (2D-WL) spectrometer we are able to explore exciton diffusion and hopping dynamics in order to better inform carbon nanotube device design. In the second part of this talk I will discuss our newer, faster version of 2D-WL spectroscopy using a pulse shaper and present an initial report on perovskite photophysics.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Marcin ZiBek <div class="p"><!----></div> </li> <li> /394/ <div class="p"><!----></div> Date: Wednesday 2018.07.11 <div class="p"><!----></div> Speaker: <b>Dr Jorge Augusto Otlora Arias</b> <div class="p"><!----></div> Affiliation: Institute for Metallic Materials Leibniz Institute for Solid State and Material Research, Dresden, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Towards a three dimensional curvilinear magnonic device</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The research field called Magnonics emerged with the paradigm of harnessing spin-waves (SWs) as the elemental carrier of information. With up to terahertz (THz) oscillation frequencies with nanometric wavelengths and over macroscopic propagation distances without electron charges being displaced, harnessing magnons paves the way toward applications with minimum joule heating effect, therefore with unprecedentedly low power consumption (energy- friendly environmental devices), reconfigurable functionality, faster operation and further miniaturization. The wavelike properties of SWs as phase and amplitude provides additional degrees of freedom in data processing and sensing, which lead for instance, to novel prototype building blocks of SW-based logic [1] and smart device for very efficient SW propagation channels [2]. The kernel of such applications generally consists of the so-called magnonic waveguides (MGs) and magnonic crystals (MCs), which are meta-materials characterized by their unprecedented on-demand reprogrammable functionality. Whether MGs or MCs, three aspects are generally assessed at the moment of studying SWs properties for fundamental physics and magnonic applications: (i) High efficiency in transmitting SWs power along magnetic tracks with minimum energy consumption, sub-micrometer wave length encoding (&lt; 1 m), large group velocity limits ( &gt; 1000 m/s), large decay length ( &gt; 6 m) and small frequency linewidth ( &lt; 100 MHz); (ii) large and tunable nonreciprocities in the dispersion relation, amplitude, power absorption, frequency linewidth and decay length of SWs, at sub-micrometer wavelengths, above GHz frequency range, and minimized energy expenditure. This feature is particularly advantageous in analog and digital operation based in SW logic devices, since non-reciprocity provides the condition for the unidirectional propagation of SW packages (avoiding the formation of standing SWs), which is strategic for enhancing the input/output information transfer encoded in the phase, frequency and amplitude of SWs; and (iii) efficient interface for input/output signals conversion between magnons and other types of information carries at high resolution of SW phase and frequency, and over a broad range of frequency coverage. Accordingly, it can be suggested that the ideal magnonic layout is that one which allows the versatility of enclosing the aforementioned three aspects in one single device; hence the potential of SWs as information carriers can be fully exploited. According to literature, these three aspects have been mainly studied in planar two-dimensional (2D) thin films, nevertheless, there is not yet a clear example wherein all of them can be achieved in only one single magnonic layout at once. We think that a promising route would consist in curving the 2D template into a curvilinear 3D-dimesional geometry, which simultaneously bring novelty to Magnonics because the intrinsic curvature-induced magneto-chiral effects in SWs.[3-5] This talk will be addressed in this direction. <br /> [1] Wang et al., Sci. Adv. 4, e1701517 (2018) <br /> [2] Wagner et al., Nat. Nanotech. (2016) <br /> [3] Otlora et al., Phys. Rev. Lett. 117, 227203 (2016) <br /> [4] Otlora et al., Phys. Rev. B. 95, 184415 (2017) <br /> [5] Otlora et al., Phys. Rev. B. 98, 014403 (2018)</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /393/ <div class="p"><!----></div> Date: Tuesday 2018.07.10 <div class="p"><!----></div> Speaker: <b>M.Sc. Edgar Aguilar</b> <div class="p"><!----></div> Affiliation: National Quantum Information Centre, University of GdaDsk, Sopot, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Certifying an Irreducible 1024-Dimensional Photonic State Using Refined Dimension Witnesses</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We report on a new class of dimension witnesses, based on quantum random access codes, which are a function of the recorded statistics and that have different bounds for all possible decompositions of a high-dimensional physical system. Thus, it certifies the dimension of the system and has the new distinct feature of identifying whether the high-dimensional system is decomposable in terms of lower dimensional subsystems. To demonstrate the practicability of this technique, we used it to experimentally certify the generation of an irreducible 1024-dimensional photonic quantum state. Therefore, certifying that the state is not multipartite or encoded using noncoupled different degrees of freedom of a single photon. Our protocol should find applications in a broad class of modern quantum information experiments addressing the generation of high-dimensional quantum systems, where quantum tomography may become intractable [1].<br /><br /> [1] Edgar A. Aguilar, Mt Farkas, Daniel Martnez, Matas Alvarado, Jaime Carine, Guilherme B. Xavier, Johanna F. Barra, Gustavo Canas, Marcin PawBowski, and Gustavo Lima, Phys. Rev. Lett. 120, 230503 (2018).</blockquote> <div class="p"><!----></div> Chair: Dr hab. PaweB KurzyDski <div class="p"><!----></div> </li> <li> /392/ <div class="p"><!----></div> Data: pitek 2018.07.6 <div class="p"><!----></div> Prelegent: <b>Dr hab. Jolanta Natalia LatosiDska</b> <div class="p"><!----></div> Afiliacja: WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF"> CaBo[ to znacznie wicej ni| suma cz[ci  niezale|nie od skali (Seminarium profesorskie)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Synergia (z gr.  &#963;&#965;&#957; oznaczajce  razem , oraz  &#1013;&#961;&#947;&#953;&#945;  dzieBo, dziaBanie)w kontek[cie badaD naukowych oznacza podej[cie caBo[ciowe  kompleksowe. Od pocztku kariery naukowej zdecydowaBam si na interdyscyplinarny charakter swoich badaD i pod|aBam w tym kierunku konsekwentnie, pomimo wielu przeciwno[ci. Obecnie badania interdyscyplinarne stanowi swego rodzaju standard, ale w latach 90-tych takie podej[cie Bczenia ze sob r|nych dziedzin byBo nawet nie do pomy[lenia. Jednak|e ja upatrywaBam w nim nie tylko szanse na poszerzanie perspektyw badawczych, ale i kryjcy si za tym ogromny potencjaB. Z upBywem czasu tematyka moich interdyscyplinarnych prac naukowych stopniowo ewoluowaBa w kierunku poszerzonej interdyscyplinarno[ci (multidyscyplinarno[ci), Bczc fizyk, chemi, informatyk, farmacj, biofizyk, a w ostatnich latach rwnie| matematyk, meteorologi, klimatologi, astronomi oraz ochron [rodowiska. </blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /391/ <div class="p"><!----></div> Date: Wednesday 2018.07.4 <div class="p"><!----></div> Speaker: <b>Dr Zbigniew Rozynek</b> <div class="p"><!----></div> Affiliation: Institute of Acoustics, Faculty of Physics, UAM <div class="p"><!----></div> Title: <font color="#0000FF">Particle assembly and droplet manipulation by electric fields (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Droplets covered by micro- and nanoparticles have recently received considerable research interest, as they are promising for various practical applications, such as in food technology, the oil industry, biofuel processing, and improving pharmaceutical products. Moreover, such droplets possess characteristics that make them useful as experimental model systems for studying, for example, particle effects on interfacial tension, particle crystal growth and ordering or particle-layer buckling on curved interfaces, particle assembly and rearrangement on droplets surfaces, and particle detachment from droplets. Particle-covered droplets can additionally be employed for fabricating porous structures, granular or colloidal capsules of different mechanical properties, morphologies, or shapes, and adaptive structures. In this context, broadening one s knowledge of particle-covered droplet stability, deformation, and surface-particle manipulation is essential to further developing the above-mentioned research areas. The deformation of droplets can be induced and investigated using various experimental tools, including atomic force microscopes, microfluidic devices, or mechanical shearing. For manipulating the surface or bulk particles, many physical or chemical approaches exist, such as pH-controlled particle assembly, acoustic wave induced bulk and surface particle convection, magnetic field directed particle assembly, and electric field assisted particle arrangements. In this seminar I will demonstrate how we utilized various electric field phenomena to study the behaviour of particle-covered droplets subjected to electric fields, including steady-state deformation and transient deformation of such droplets, as well as the mechanics and rheological properties of particle shells formed on droplets. I will also show that electric fields can be used for manipulating particles in the bulk and at the surface of the droplet by exerting forces that were acting on them either directly, e.g. through particle motion via dipolar forces, or indirectly, e.g. by particle convection through electric field induced liquid flows.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /390/ <div class="p"><!----></div> Date: Tuesday 2018.07.03 <div class="p"><!----></div> Speaker: <b>Prof. Richard J. Spontak</b> <div class="p"><!----></div> Affiliation: Departments of Chemical &amp; Biomolecular Engineering and Materials Science &amp; Engineering, North Carolina State University, Raleigh NC 27695 <div class="p"><!----></div> Title: <font color="#0000FF">Photodynamic Polymers as Comprehensive Anti-Infective Materials: Staying Ahead of a Growing Global Threat</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Adherence of pathogens such as bacteria and viruses on various surfaces routinely leads to subsequent transmission to new hosts, significantly promoting the proliferation of potentially harmful organisms. This sequence is particularly worrisome in the case of antibiotic-resistant pathogens, which are becoming a global threat to human health. According to the Centers for Disease Control and Prevention, 1 out of every 20 hospital patients is affected by nosocomial infections, subsequently resulting in 100,000 deaths annually in the United States alone. Out of these, about 23,000 deaths are attributed to drug-resistant pathogens such as methicillin-resistant Staphylococcus aureus (S. aureus) or vancomycin-resistant Enterococcus faecium (E. faecium). Strains referred to as "nightmare bacteria" with highly elevated resistance to last-resort antibiotics have been reported all around the world in 2017. While silver, copper, zinc oxide or titanium dioxide have been used as surfaces or introduced as nanoparticles into a broad range of substrates to serve as antimicrobial agents and eradicate a wide range of pathogens, they all suffer from eventual reservoir depletion, and they tend to be pathogen- or condition-specific. Moreover, if not covalently bound or tightly embedded, these nanoparticles can leach into the environment and introduce additional health concerns. In this study, we discuss a photodynamic polymer composed of an olefinic thermoplastic elastomer modified with zinc tetra(4-N-methylpyridyl)porphine (ZnTMPyP<sup>4+</sup>), a photoactive antimicrobial, and demonstrate that this combination is remarkably effective at inactivating 5 bacterial strains, including S. aureus and Escheria coli (E. coli) often associated with food poisoning, and 2 different viruses, including Human adenovirus-5, upon exposure to non-coherent light at an intensity of 65-80 mW/cm<sup>2</sup> for 60 min. By achieving antibacterial and antiviral efficacies of at least 99.89% and 99.95%, respectively, this methodology based on the light-induced creation of singlet oxygen constitutes a non-specific and highly successful route by which to eliminate harmful pathogens by simple exposure to visible light and oxygen.</blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /389/ <div class="p"><!----></div> Date: Wednesday 2018.06.27 <div class="p"><!----></div> Speaker: <b>Dr.-Ing. Wolfgang Jaschinski</b> <div class="p"><!----></div> Affiliation: Leibniz Research Centre for Working Environment and Human Factors, Technische Universitt Dortmund <div class="p"><!----></div> Title: <font color="#0000FF">Physical dimensions follow physiological functions: Ergonomics at the computer workstation.</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Using computers means work for muscular systems, e.g. the intra-ocular muscle of the focussing system in the eyes, the extra-ocular muscles for moving the eyes, the muscles of the neck and the back. These physiological systems have properties that have developed during evolution in natural environments. For comfortable computer work, these individual physiological functions should be considered when arranging and designing the computer workstation for the individual user. Optometry provides appropriate eye glasses for clear vision. <br /> <div class="p"><!----></div> [1] Jaschinski W (2017) Individual Objective and Subjective Fixation Disparity in Near Vision. PLoS ONE 12(1).<br /> [2] Schroth, V.; Joos, R.; Jaschinski, W.: Effects of prism eyeglasses on objective and subjective fixation disparity. PLoS ONE 10: e0138871 (29 pp.) (2015)<br /> [3] Weidling P, Jaschinski W: The vertical monitor position for presbyopic computer users with progressive lenses: how to reach clear vision and comfortable head posture. Ergonomics 58: 1819-1829 (2015)<br /> [4] Jaschinski W, Knig M, Mekontso TM, Ohlendorf A, Welscher M: Comparison of progressive addition lenses for general purpose and for computer vision: an office field study. Clin Exp Optom 98: 234-243 (2015)<br /> [5] Knig M, Haensel C, Jaschinski W: How to place the computer monitor: measurements of vertical zones of clear vision with presbyopic corrections. Clin Exp Optom 98: 244-253 (2015)<br /> </blockquote> <div class="p"><!----></div> Chair: Dr. Alicja Brenk-Krakowska <div class="p"><!----></div> </li> <li> /388/ <div class="p"><!----></div> Date: Friday 2018.06.22 <div class="p"><!----></div> Speaker: <b>Dr. Ravindra Chhajlany</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Field-controlled quantum matter: exploration of long-range order in reduced dimensions (Kwantowa materia kontrolowana [wiatBem: dalekozasigowe uporzdkowania w zredukowanych wymiarach) - Seminarium habilitacyjne</font> <div class="p"><!----></div> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The forms of so-called  quantum matter - where quantum effects are crucially manifested at the macroscopic scale - range from phases of  traditional strongly correlated many body systems to exotic topological systems. Research on two parallel wide classes of systems are providing access and understanding to various aspects of many body physics - (i) so called quantum simulators of matter ( idealized materials ), and of course (ii) various real materials, controlled in novel ways. In particular, quantum simulators in controlled environments based on platforms of ultracold particles trapped in optical lattices, ion traps, nano-photonic systems can be engineered to access often extreme parameter regimes rarely accessible before in real materials, using control via light or magnetic fields. Similarly, advances in ultra-fast spectroscopy are facilitating the manipulation of real materials at a microscopic level using light instead of the more traditional control of pressure, temperature etc. These new ways of controlling and manipulating matter pose theoretical challenges. In this seminar, I will summarize some results of research that I have been part of in this exciting field that will constitute my Habilitation dissertation - all of which concern the description of properties and control of long range ordered phases in d=1 or 2 dimensional systems . In particular, I will talk about: (i) engineering extreme correlated hopping for ultra-cold atoms and associated physical properties (ii) non-trivial gauge field effects in an exemplary one-dimensional system (iii) effects of gauge fields in a spinor boson gas (iv) proximity effects in an engineered bilayer system and (v) control of orbital order in a paradigmatic manganite.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /387/ <div class="p"><!----></div> Data: [roda 2018.06.20 <div class="p"><!----></div> Prelegent: <b>Dr n. med. Krzysztof Michalak</b> <div class="p"><!----></div> Afiliacja: Pracownia Fizyki Widzenia i Optometrii, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Wyznaczanie zBo|ono[ci wysokowymiarowych sygnaBw nieliniowych (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> SygnaBy chaotyczne to sygnaBy opisane przez deterministyczne ukBady rwnaD r|niczkowych, ktrych rozwizaniem jest nieregularny przebieg zmiennych w czasie. Jedn z miar ukrytej, cz[ciowej regularno[ci jest Wymiar Korelacyjny (d, Correlation Dimension). Dostpne w literaturze algorytmy wyznaczania tego parametru daj jednak bBdne wyniki w przypadku sygnaBw wysoko wymiarowych, czyli o zBo|ono[ci przekraczajcej d=5. Prezentacja przedstawia wyniki wielu symulacji numerycznych i analiz wyja[niajcych przyczyny bBdw estymacji dla sygnaBw wysoko wymiarowych oraz poprawne sposoby wyznaczania tego parametru. Analiza skupiona byBa zarwno na poprawieniu dokBadno[ci wyznaczania d, oszacowaniu dokBadno[ci tej estymacji, jak i na przyspieszeniu obliczeD, ktre w przypadku sygnaBw wysoko wymiarowych s bardzo czasochBonne. KoDcowym efektem pracy jest w du|ej mierze nowy algorytm, ktry wyznacza d z du| dokBadno[ci w znacznie krtszym czasie i ktry zaimplementowany jest w zestawie funkcji Matlab udostpnionych do swobodnego wykorzystania. Metoda mo|e mie zastosowanie w wielu dziedzinach nauki, w ktrych mamy do czynienia z ukBadami chaotycznymi: w fizyce, chemii, biologii, ekonomii, meteorologii itp.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /386/ <div class="p"><!----></div> Date: Thursday 2018.06.14 <div class="p"><!----></div> Speaker: <b>Prof. Jan Perina Jr.</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Science of the Czech Republic, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Sub-Poissonian light</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Different definitions of higher-order sub-Poissonian-like fields based on the moments of integrated intensity, photon number, integrated-intensity fluctuation, photon-number fluctuation and using the elements of photocount (photon-number) distributions will be introduced. Their mutual relations will be elucidated. Using the set of potentially sub-Poissonian fields obtained by post-selection from a twin beam based on photon-number-resolving detection their power to experimentally indicate non-classicality will be discussed. The generation of sub-Poissonian-like optical fields up to the fifth-order in intensity moments and up to the eleventh-order in the elements of photocount distribution will be mentioned. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /385/ <div class="p"><!----></div> Date: Monday 2018.06.11 <div class="p"><!----></div> Speaker: <b>Dr. Andrii Sotnikov</b> <div class="p"><!----></div> Affiliation: Institute of Solid State Physics, TU Wien, Vienna, Austria <div class="p"><!----></div> Title: <font color="#0000FF">Aspects of the Hubbard model and challenges for quantum computers</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> After 55 years since its formulation, the Hubbard model keeps many problems open till present days. We discuss main reasons for the difficulty to access particular regimes of this simple model even with modern computational possibilities. It will be shown that the Hubbard model is universal in the sense that it can describe large classes of materials and strongly-correlated many-body phases of interest, in particular, high-temperature superconductors and excitonic insulators. For these two cases, several recent experimental achievements and current level of theoretical description will be pointed out. With all problems in mind, a natural question arises:  Can universal quantum simulators or quantum computers help to gain further physical insights in the Hubbard model? According to recent progress in these fields, we tend to answer  yes , but there are still many challenges on the way. </blockquote> <div class="p"><!----></div> Chair: Dr. Agnieszka Cichy <div class="p"><!----></div> </li> <li> /384/ <div class="p"><!----></div> Date: Wednesday 2018.05.30 <div class="p"><!----></div> Speaker: <b>Dr. Piotr Biskupski</b> <div class="p"><!----></div> Affiliation: IBM Systems - File </td><td width="150"> Object Storage - Technical Leader, CEE, IBM Q Ambassador <div class="p"><!----></div> Title: <font color="#0000FF">The future is quantum - IBM Q experience</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The rate of progress has been remarkable. Only a year and a half ago, we put the IBM Q experience prototype 5-qubit machine in the cloud, and made it available for the world to use, explore, and learn from. A year later, we added a second device with 16 qubits. Today, more than 60,000 users from more than 1,500 universities, 300 high schools, and 300 private institutions have registered for accounts on the IBM Q experience, and collectively run 1.7 million experiments. The members of the research community have also published more than 35 research papers using our platform as a testbed for ideas. This is only the beginning. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /383/ <div class="p"><!----></div> Data: poniedziaBek 2018.05.28 <div class="p"><!----></div> Prelegent: <b>dr Marta Targosz-Korecka</b> <div class="p"><!----></div> Afiliacja: ZakBad Fizyki Nanostruktur i Nanotechnologii, WydziaB Fizyki, Astronomii i Informatyki Stosowanej, Uniwersytet JagielloDski <div class="p"><!----></div> TytuB: <font color="#0000FF">WBa[ciwo[ci mechaniczne komrek w rozwoju oraz przebiegu chorb cywilizacyjnych - obraz na podstawie badaD z wykorzystaniem mikroskopu siB atomowych (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /382/ <div class="p"><!----></div> Date: Monday 2018.05.21 <div class="p"><!----></div> Speaker: <b>Ph.D. Eng. PrzemysBaw GBowacki</b> <div class="p"><!----></div> Affiliation: Physikalisch-Technische Bundesanstalt, Braunschweig, Germany and PoznaD University of Technology, PoznaD, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Laser spectroscopic characterization of the nuclear-clock isomer <sup>229m</sup>Th </font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2018Glowacki.pdf">[PDF]</a>&nbsp;</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /381/ <div class="p"><!----></div> Data: [roda 2018.05.16 <div class="p"><!----></div> Prelegent: <b>Dr Piotr KozBowski</b> <div class="p"><!----></div> Afiliacja: ZakBad Fizyki Komputerowej, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Wyja[nienie wBasno[ci magnetycznych i elektronowych wybranych nanomagnetykw molekularnych na bazie jonw chromu i wanadu (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> <a href="seminars/2018Kozlowski.pdf">[PDF]</a>&nbsp;</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /380/ <div class="p"><!----></div> Data: pitek 2018.05.11 <div class="p"><!----></div> Prelegent: <b>Dr Wojciech Dimitrow</b> <div class="p"><!----></div> Afiliacja: Instytut Obserwatorium Astronomiczne, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">UkBady wielokrotne gwiazd - powstawanie, obserwacje oraz modelowanie (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Podczas prezentacji zostan przedstawione wyniki obserwacji oraz modelowania ukBadw wielokrotnych gwiazd zawierajcych par zamieniow. W ramach wprowadzenia zostanie omwiony proces powstawania gwiazd w obBokach molekularnych. Przedstawione bd r|ne typy obiektw oraz interesujce wyniki obserwacyjne z ostatnich lat. Dynamika i stabilno[ takich ukBadw oraz mo|liwo[ obecno[ci planet jest kolejnym wa|nym problemem. Tematyka powstawania gwiazd jest [ci[le zwizana z badaniami ukBadw wielokrotnych. Obserwacje dostarczaj informacji ktre pozwalaj zweryfikowa wspBczesne teorie formowania si gwiazd. Przedstawione bd instrumenty badawcze dziki ktrym zgromadzono dane spektroskopowe i fotometryczne niezbdne do modelowania piciu wybranych ukBadw wielokrotnych. Omwione zostan podstawowe zastosowane metody - pomiarw prdko[ci radialnych (efekt Dopplera) oraz modelowania par zamieniowych. Dla piciu badanych ukBadw udaBo si odkry nowe skBadniki spektroskopowe, wyja[ni hierarchie ukBadw oraz otrzyma parametry orbitalne, takie jak okresy, rozmiary, mimo[rody oraz nachylenia. Ponadto wyznaczono masy, promienie, temperatury, ksztaBt oraz skBad chemiczny skBadnikw par zamieniowych. Na podstawie tych wynikw mo|na okre[li status ewolucyjny badanego obiektu oraz wyznaczy jego odlegBo[.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /379/ <div class="p"><!----></div> Data: [roda 2018.05.09 <div class="p"><!----></div> Prelegent: <b>Prof. Jan Barciszewski</b> <div class="p"><!----></div> Afiliacja: Instytut Chemii Bioorganicznej Polskiej Akademii Nauk i Centrum Nanobiomedyczne UAM, PoznaD <div class="p"><!----></div> TytuB: <font color="#0000FF">Genetyka to za maBo</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Nauki biologiczne mo|na podzieli na biochemi, genetyk, biologi molekularn i epigenetyk. Generalnie biologia molekularna analizuje znane produkty znanych genw, biochemia zajmuje si badaniami znanych produktw nieznanych genw a zadaniem genetyki jest analiza znanych genw nieznanych produktw. Poznanie sekwencji nukleotydowej ludzkiego genomu w 2003 roku byBo jednym z najwikszych osigni genetyki. Genom czBowieka skBada si z ponad 3 miliardw par zasad i zawiera ok. 21000 genw kodujcych biaBka, co stanowi zaledwie 2% genomu. Liczba genw czBowieka jest tylko o okoBo 50 wiksza od liczby genw szympansa, natomiast bakteria Escherichia coli ma 4300 genw, dro|d|e piwne - 6300 genw, rzodkiewnik pospolity  25000, a ry|  50000. Dwoje niespokrewnionych ludzi wykazuje identyczno[ 99,9% sekwencji nukleotydowej DNA. W caBej populacji ludzkiej r|nice dotycz tylko 0,3% sekwencji genomu. PozostaBe 98% genomu, cho nie koduje biaBek (s tam m.in. mobilne elementy genetyczne, pseudogeny czy introny) jest tak samo wa|na dla funkcjonowania komrki. Cz[ pseudogenw pozostaje transkrypcyjnie nieaktywna, ale z wikszo[ci powstaj RNA, ktre nie s przepisywane na biaBko, ale mog regulowa ekspresj genw. Ka|da komrka naszego organizmu zawiera ten sam genom (DNA), ale mimo tego komrki bardzo si od siebie r|ni. W komrce istniej mechanizmy powodujce zmiany epigenetyczne (epi: poza, ponad), ktre wpBywaj na ekspresj genw ale nie zmieniaj sekwencji DNA. Jednym z mechanizmw epigenetycznych jest metylacja DNA, a drugi modyfikacja (metylacja, acetylacja) histonw. Modyfikacje epigenetyczne, s czsto efektem reakcji organizmu na zmieniajce si warunki otoczenia oraz decyduj o jego mo|liwo[ciach adaptacyjnych. Poszukiwania epigenetyczne polegaj na identyfikacji elementw chemicznych, ktre modyfikuj genom, zarzdzaj komrkami, i zmieniaj dBugoterminow ekspresj genw. OkazaBo si, |e nie tylko substancje chemiczne ale rwnie| uwarunkowania spoBeczne mog wpBywa na jej zakres. Modyfikacje epigenetyczne mog si pojawi w wieku dorosBym, mBodzieDczym, a nawet in utero. W konsekwencji, okre[lone wydarzenie z dzieciDstwa mo|e zmieni sposb, w jaki geny reaguj w innej sytuacji w wieku dorosBym. Przechodzc na grunt medycyny, zauwa|ono, |e w procesie nowotworzenia nastpuje obni|enie globalnego poziomu metylacji DNA oraz podwy|szenie metylacji promotorw genw supresorowych a tak|e modyfikacje histonw, co prowadzi do zmian w ekspresji genw. Bazujc na tych obserwacjach, podejmowane s prby terapeutycznego wykorzystania mechanizmw epigenetycznych ograniczajc negatywny wpByw demetylacji DNA czy acetylacji histonw. </blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /378/ <div class="p"><!----></div> Data: [roda 2018.04.25 <div class="p"><!----></div> Prelegent: <b>Prof. Halina Abramczyk</b> <div class="p"><!----></div> Afiliacja: Institute of Applied Radiation Chemistry, Adz University of Technology <div class="p"><!----></div> TytuB: <font color="#0000FF">Obrazowanie ramanowskie, AFM i SNOM w onkologii.</font> <div class="p"><!----></div> <div class="p"><!----></div> Prowadzca: Dr MaBgorzata Paprzycka <div class="p"><!----></div> </li> <li> /377/ <div class="p"><!----></div> Date: Tuesday 2018.04.24 <div class="p"><!----></div> Speaker: <b>Dr. Peter Alexander Bouvrie</b> <div class="p"><!----></div> Affiliation: Centro Brasileiro de Pesquisas Fsicas <div class="p"><!----></div> Title: <font color="#0000FF">Quantum information with ultracold interacting Fermi gases</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Multiparticle entangled states, essential ingredients for modern quantum technologies, are routinely generated in experiments of atomic Bose-Einstein condensates (BECs). However, entanglement in ultracold interacting Fermi gases has not been exploited yet. Here, using a theory of composite bosons we show that many-particle entanglement between two fermionic ensembles localized in spatially separated modes can be generated by splitting an ultracold interacting Fermi gas in the (molecular) BEC regime. This entanglement relies on the fundamental fermion exchange symmetry of molecular constituents and might be used for implementing quantum information tasks such as Bell test of quantum nonlocality. We also predict that large ensembles, of the order of 10<sup>5</sup> fully entangled fermionic atoms, could be generated in current experiments of ultracold interacting Fermi gases. </blockquote> <div class="p"><!----></div> Chair: Dr hab. PaweB KurzyDski <div class="p"><!----></div> </li> <li> /376/ <div class="p"><!----></div> Data: [roda 2018.04.18 <div class="p"><!----></div> Prelegent: <b>Dr Wojciech GrudziDski</b> <div class="p"><!----></div> Afiliacja: ZakBad Biofizyki, Instytut Fizyki, WydziaB Matematyki, Fizyki i Informatyki, Uniwersytet Marii Curie-SkBodowskiej w Lublinie <div class="p"><!----></div> TytuB: <font color="#0000FF">Synergistyczny efekt zastosowania spektroskopii fluorescencyjnej i ramanowskiej polienw w badaniach oraz obrazowaniu struktur biologicznych (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Polieny, wBczajc karotenoidy oraz antybiotyk amfoterycyna B, odgrywaj r|ne, niezwykle wa|ne role biologiczne. W ukBadach naturalnych ich funkcjonowanie opiera si gBwnie na modyfikacji fizycznych wBa[ciwo[ci bBon oraz protekcyjnym dziaBaniu antyoksydacyjnym. Organizacja tych czsteczek w bBonach lipidowych zwizana jest [ci[le z mechanizmami molekularnymi odpowiedzialnymi za funkcje jakie odgrywaj one w organizmach |ywych. Komplementarne zastosowanie spektroskopii Ramana i spektroskopii fluorescencyjnej w badaniach polienw pozwala na unikaln analiz oraz obrazowanie struktur biologicznych w mikroskali. Podej[cie opierajce si na rwnoczesnym u|yciu dwu technik mikroskopowych wykorzystane zostaBo, midzy innymi, do badaD organizacji molekularnej, lokalizacji oraz orientacji karotenoidw, a tak|e antybiotyku polienowego. Podczas wystpienia zaprezentowane zostan wyniki badaD oraz analizy przeprowadzone dla polienw (luteiny, zeaksantyny, amfoterycyny B) wbudowywanych do modelowych bBon lipidowych w postaci bardzo du|ych, jednowarstwowych struktur liposomowych (GUV ang. Giant Unilamellar Vesicles) formowanych z lecytyny. Dane uzyskane z pomiarw fluorescencyjnych umo|liwiBy okre[lenie lokalizacji czsteczek, a tak|e daBy podstaw do stwierdzenia jak form organizacji molekularnej przyjmuj analizowane zwizki. SzczegBowa analiza z wykorzystaniem oryginalnej metody pozwoliBa precyzyjnie wyznaczy orientacj polienw wzgldem osi normalnej do bBony lipidowej. Spektroskopia ramanowska, poza lokalizacj polienw w strukturach lipidowych, umo|liwiBa uzyskanie informacji o formach stereoizomerycznych karotenoidw wystpujcych w badanych ukBadach, a tak|e o ich rozmieszczeniu w obrbie analizowanego systemu. Przedstawione badania pozwalaj, midzy innymi zrozumie rol jak odgrywaj luteina i zeaksantyna w plamce |Btej oka ludzkiego oraz jakie jest ich znaczenie w procesie nieodwracalnej utraty wzroku w wyniku starczego zwyrodnienia siatkwki (AMD, ang. Age-related Macular Degeneration). Dziki uzyskanym wynikom zweryfikowano hipotezy dotyczce funkcji ochronnych peBnionych przez karotenoidy na poziomie molekularnym. Przeprowadzone badania antybiotyku polienowego amfoterycyny B pozwoliBy zidentyfikowa molekularne determinanty toksyczno[ci tego leku dla pacjentw.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /375/ <div class="p"><!----></div> Date: Wednesday 2018.04.11 at 13:00 <div class="p"><!----></div> Speaker: <b>Dr MichaB KarpiDski</b> <div class="p"><!----></div> Affiliation: Quantum Photonics Laboratory, University of Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Spectral shaping of single-photon pulses</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The spectral-temporal degree of freedom of light has recently been recognized as a promising platform for encoding and transmission of quantum information. This requires the ability to modify the spectral and temporal profiles of single-photon light pulses. During the seminar I will talk about the methods of spectral modification of quantum light using electro-optic phase modulation. This method allows to change the time-spectral profile of the light pulse in a deterministic and, in principle, unitary way, i.e. without the use of filtering or amplification. In particular, I will present experimental results on efficient modification of the spectral bandwidth of single-photon pulses of light and discuss their significance in the context of the development of quantum networks.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /374/ <div class="p"><!----></div> Data: [roda 2018.03.28 <div class="p"><!----></div> Prelegent: <b>Dr Beata AuszczyDska</b> <div class="p"><!----></div> Afiliacja: Katedra Fizyki Molekularnej, WydziaB Chemiczny, Politechnika Adzka <div class="p"><!----></div> TytuB: <font color="#0000FF">Podstawy fizyczne procesu optymalizacji organicznych i hybrydowych fotodiod pracujcych w zakresie bliskiej podczerwieni (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Organiczne urzdzenia optoelektroniczne - diody elektroluminescencyjne, ogniwa fotowoltaiczne oraz fotodiody - wykazuj szereg niezwykBych wBa[ciwo[ci, takich jak elastyczno[, lekka waga czy te| mo|liwo[ wytwarzania elementw o du|ej powierzchni tanimi metodami drukarskimi, ktre s nieosigalne dla elektroniki nieorganicznej. Mimo to, drukowana elektronika organiczna nie znalazBa jeszcze szerokiego zastosowania, gdy| parametry pracy tak wytworzonych urzdzeD nie speBniaj wymagaD u|ytkownikw. Seminarium bdzie po[wicone metodzie optymalizacji struktury organicznych i hybrydowych fotodetektorw, w celu uzyskania urzdzeD wykazujcych dobre cechy u|ytkowe. Metoda ta jest oparta na analizie zjawisk fizycznych wpBywajcych na parametry pracy fotodiod takich jak: generacja ekscytonw i ich dysocjacja na swobodne no[niki Badunku, rekombinacja, puBapkowanie i ruchliwo[ no[nikw Badunku, oraz przepByw prdw ograniczonych Badunkiem przestrzennym. Taka analiza bdzie przeprowadzona na przykBadzie dwch klas urzdzeD: fotodetektorw hybrydowych, w ktrych warstw aktywn stanowiBy ukBady organiczno-nieorganiczne oparte na mieszaninie polimeru z nieorganicznymi nanoczstkami, oraz fotodetektorw polimerowych wykorzystujcych odpowiednio zaprojektowane kopolimery donorowo-akceptorowe, ktre dziki wskiej przerwie energetycznej s zdolne do absorpcji [wiatBa z zakresu bliskiej podczerwieni. Proces optymalizacji obejmowaB tak|e dobr warstw blokujcych niepo|dany przepByw Badunku, ktrych zastosowanie umo|liwia uzyskanie zbalansowanego transportu elektronw i dziur oraz obni|enie prdw ciemnych co zwiksza czuBo[ fotodiod. Na seminarium zostan zaprezentowane tak|e wstpne wyniki druku warstw aktywnych i opracowanych kompozycji atramentw i omwione bd perspektywy rozwoju drukowanej elektroniki organicznej. </blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /373/ <div class="p"><!----></div> Date: Friday 2018.03.23 <div class="p"><!----></div> Speaker: <b>Dr Oleksandr Bondar</b> <div class="p"><!----></div> Affiliation: Sumy State University, Sumy, Ukraine <div class="p"><!----></div> Title: <font color="#0000FF">Fabrication and Investigation of Multielement and Multilayered Protective Coatings With Enhanced Physical-Mechanical and Tribological Properties Based on Nitrides of Transition Metals</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The presentation will be devoted to investigation of structure, physical-mechanical and tribological properties of multielement NbN, Nb-Si-N, Nb-Al-N, (Ti-Zr-Hf-V-Nb)N and (Ti-Zr-Hf-V-Nb-Ta)N coatings, as well as multilayered TiN/MoN, TiN/ZrN and MoN/CrN coatings with various bilayer thickness, deposited using PVD methods (vacuum-arc evaporation of cathode or reactive magnetron sputtering). Influence of deposition conditions on microstructure and properties of the coatings will be discussed. In addition, influence of high-temperature annealing and high-dose ion implantation of Au- and N+ ions will also be covered within the presentation.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Krzysztof Grygiel <div class="p"><!----></div> </li> <li> /372/ <div class="p"><!----></div> Data: [roda 2018.03.21 <div class="p"><!----></div> Prelegent: <b>Dr Danuta StefaDska</b> <div class="p"><!----></div> Afiliacja: WydziaB Fizyki Technicznej, Politechnika PoznaDska <div class="p"><!----></div> TytuB: <font color="#0000FF">Spektroskopowa analiza oddziaBywaD w atomach terbu i holmu jako droga do zastosowaD w kwantowej in|ynierii i metrologii</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Tematyka wystpienia obejmuje kompleksowe badania struktury nadsubtelnej (w wybranych przypadkach rwnie| z dodatkowym rozszczepieniem zeemanowskim) poziomw elektronowych atomu i jonu terbu oraz atomu holmu, prowadzone metod fluorescencji wzbudzonej wizk laserow, z u|yciem jednomodowych laserw przestrajalnych. Kluczowe w badaniach jest wykorzystanie m.in. przestrajalnego lasera barwnikowego generujcego w trudno dostpnym zielonym zakresie spektralnym, pompowanego optycznie laserem diodowym. Istotny postp w analizie struktury elektronowej dla wspomnianych pierwiastkw, uzyskany w oparciu o wspomniane badania eksperymentalne, mo|e stanowi podstaw poszukiwania zastosowaD w kwantowej in|ynierii i metrologii. Dla atomu holmu zaproponowano schematy poziomw do pomiaru zmian czasowych staBej struktury subtelnej. Rozwa|ane s w dalszej perspektywie rwnie| inne zastosowania dotyczce atomu terbu. </blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /371/ <div class="p"><!----></div> Date: Monday 2018.03.19 <div class="p"><!----></div> Speaker: <b>Dr Wojciech GaweBda</b> <div class="p"><!----></div> Affiliation: ZakBad Elektroniki Kwantowej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Time-resolved studies of chemical reaction dynamics using ultrashort X-ray pulses (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Ultrafast structural dynamics is an emerging field aiming to deliver a detailed understanding of the elementary steps in reacting chemical species, which involve changes in their nuclear, electronic and spin states. Such processes are vital ingredients in chemistry and biology, but also in technological applications, including efficient charge transport in light harvesting molecules and ultrafast switchable molecular magnets. In order to unravel this complex dynamic behavior we have implemented a suite of ultrafast X-ray spectroscopic and scattering tools to zoom into both the electronic and nuclear structures, with the goal to ultimately deliver a molecular movie of ongoing chemical processes. In view of the many potential applications in chemical and biological dynamics it is desirable to increase the sensitivity level of such experiments as well as to decrease the time resolution into the femtosecond time domain. In this talk I will present our benchmark results using a versatile setup that permits simultaneous measurements of ultrafast X-ray absorption and emission spectroscopies combined with X-ray scattering, which has been recently implemented at different synchrotrons and X-ray Free Electron Lasers. It has been applied to study different photochemical reactions, ranging from nascent radicals in solution, molecular spin transitions, and ligand exchange reactions, to photocatalytic systems, with the goal to deliver a deeper understanding of the elementary steps in chemical reactivity.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /370/ <div class="p"><!----></div> Date: Wednesday 2018.03.14 <div class="p"><!----></div> Speaker: <b>Dr hab. Tomasz Kwiatkowski</b> <div class="p"><!----></div> Affiliation: Astronomical Observatory, Faculty of Physics, Adam Mickiewicz University in Poznan <div class="p"><!----></div> Title: <font color="#0000FF">Where gravity no longer dominates: The internal structure and evolution of the smallest asteroids</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Asteroids, space rocks orbiting the Sun, are very diverse in composition. While the largest of them (500-1000 km) are spheroidal bodies, and the middle-sized ones (0.1-500km) are gravity-dominated, irregular rubble-piles, the smallest asteroids (D &lt; 0.1km) are either monolitic bodies or boulders held together by the forces of cohesion. Observations suggest that many of the smallest asteroids can be surprisingly weak bodies evolving under the influence of the solar radiation. Since some of them come close to the Earth, they can be easily observed or even visited by space probes. This way they can serve as a laboratory for testing physical phenomena controlling the evolution of the asteroids not only in our Solar System, but also those orbiting around other stars. The talk will be targeted for non-astronomers with the emphasis on the physical phenomena in the low-gravity environment. I will interpret images obtained from space probes, present shape models used for testing theories and arrive at conclusions about the internal structure and evolution of the smallest asteroids.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Agnieszka KryszczyDska <div class="p"><!----></div> </li> <li> /369/ <div class="p"><!----></div> Date: Friday 2018.03.09 <div class="p"><!----></div> Speaker: <b>Prof. Andrzej Dobek</b> <div class="p"><!----></div> Affiliation: Molecular Biophysics Division, Faculty of Physics, Adam Mickiewicz University <div class="p"><!----></div> Title: <font color="#0000FF">THz Kerr effect in water</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> As a liquid, water plays a critical role in biological systems. Its permanent dipole moment can interact favorably with charged species. Water is an excellent hydrogen bonding solvent. It has a balanced number of hydrogen bond donors and acceptors and it has the smallest moment of inertia among small molecule polar liquids. As such it demonstrates the fastest solvent relaxation dynamics. In the liquid phase H<sub>2</sub>O molecules form a disordered fluctuating network of intermolecular hydrogen bonds. The motions of biomacromolecules depend on the structure and dynamics of water. These motions take place over a many time-scales: from ns (diffusion of H<sub>2</sub>O in the first solvation shell of protein), through ps (amino-acid side motions) to sub-ps (librational and phonon-like motion of H<sub>2</sub>O). The motions in a large range of frequencies can be studied by the OKE, the anisotropic Raman scattering and the dielectric techniques including THz-TDS. Using these methods one can observe changes in the spectra of biomacromolecules in water solution in the range 10 GHz-30 THz. In the lecture the fundamentals of THz radiation, as well as optical and THz Kerr effect will be reminded. THz OKE measurements of three water samples of deionized, distilled and buffered (PBS) water will be reported and analyzed. These media were chosen in order to study the effect of ions presence on water behavior in the ultrafast time scale. The water most interesting from the point of view of living cells studies is the one significantly ionized. Therefore, discrimination between ultrafast effects resulting from internal H<sub>2</sub>O properties from those resulting from H<sub>2</sub>O  ions interactions are very important. These two effects may be connected to difference in the fluctuations of the network of intermolecular hydrogen bonds of water molecules in the presence or absence of ions and cations in solution. These fluctuations are expected to significantly alter water birefringence amplitude and its dynamics. </blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /368/ <div class="p"><!----></div> Data: Zroda 2018.03.07 <div class="p"><!----></div> Prelegent: <b>Mgr Oleksadr Chumak</b> <div class="p"><!----></div> Afiliacja: Institute of Physics, Polish Academy of Science, Warsaw <div class="p"><!----></div> TytuB: <font color="#0000FF">WBa[ciwo[ci magnetospr|yste, anizotropia magnetyczna oraz wBa[ciwo[ci dysypatywne cienkich warstw stopw Heuslera.</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Na seminarium zostan przedstawione badania cienkich warstw stopw Heuslera Co<sub>2</sub>Fe<sub>x</sub>Mn<sub>1&#8722;x</sub>Si (CFMS) i Co<sub>2</sub>FeGa<sub>0.5</sub>Ge<sub>0.5</sub> (CFGG). Wymienione wy|ej stopy charakteryzuj si wysok polaryzacj spinow i s dobrymi kandydatami do zastosowaD, midzy innymi w spintronice. W tych materiaBach wa|n rol odgrywaj ich wBa[ciwo[ci magnetospr|yste, anizotropia magnetyczna oraz wBa[ciwo[ci dysypatywne. Przede wszystkim rozwa|any jest wpByw skoDczonej grubo[ci warstwy magnetycznej a tak|e zastosowania r|nych warstw buforowych oraz powierzchniowych. Bd tak|e przedstawione badania szeregu dodatkowych parametrw charakteryzujcych warstwy magnetyczne, takich jak warto[ci caBki wymiany, uporzdkowanie chemiczne oraz parametry tBumienia magnetycznego. Szczeglnie zostanie przedstawiona unikatowa technika Strain Modulated Ferromagnetic Resonance (SMFMR), ktra umo|liwia badania wBa[ciwo[ci magnetospr|ystych cienkich warstw magnetycznych.</blockquote> <div class="p"><!----></div> Przewodniczcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /367/ <div class="p"><!----></div> Data: [roda 2018.02.21 <div class="p"><!----></div> Prelegent: <b>Dr Magdalena Widlicka</b> <div class="p"><!----></div> Afiliacja: Department of Optics &amp; Photonics, Faculty of Fundamental Problems of Technology, WrocBaw University of Science and Technology <div class="p"><!----></div> TytuB: <font color="#0000FF">Badania wBa[ciwo[ci biomechanicznych gaBki ocznej i ich zastosowania w diagnostyce oka (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Tematyka seminarium obejmuje aspekty biomechaniki, optyki i dynamiki gaBki ocznej majce zwizek z powstawaniem obrazu w ukBadzie optycznym oka. WykBad przybli|y cel naukowy badaD parametrw mechanicznych tkanek oka i ich skorelowania z procesami fizjologicznymi i rozwojem patologii (w tym jaskry) w oku. Oko czBowieka jest struktur, w ktrej wystpuje [cisBa korelacja pomidzy wBa[ciwo[ciami mechanicznymi i refrakcyjnymi oka. Oznacza to, |e z powodw czysto optycznych parametry strukturalne  geometryczne i materiaBowe  musz speBnia okre[lone warunki. Okre[lenie tych warunkw umo|liwia przewidywanie procesw fizjologicznych oraz diagnostycznych, w tym skutkw patologii oka. Cz[ chorb oka ma etiologi mechaniczn, do takich nale|y jaskra. Wiedza z zakresu mechaniki obejmuje zarwno zjawiska fizjologiczne zachodzce wewntrz gaBki ocznej, jak rwnie| efekty dziaBaD diagnostycznych. Jednym z takich dziaBaD jest procedura pomiaru ci[nienia wewntrzgaBkowego (tonometria). Wszystkie realistyczne modele gaBki ocznej w tonometrii i chirurgii refrakcyjnej musz dzisiaj uwzgldnia zarwno zmienn grubo[ powBok oka, jak rwnie| nieliniowo[ ich wBa[ciwo[ci materiaBowych. Prezentowane w literaturze modele biomechaniczne oka, wykorzystywane w diagnostyce, stworzono gBwnie pod ktem zastosowania albo w tonometrii albo w korekcji refrakcji, natomiast nie uwzgldniaj one zwizku pomidzy tymi dwoma zastosowaniami. Ponadto istniej te| inne czynniki/procesy fizjologiczne (np. puls oczny, akomodacja, zama, jaskra itp.), ktre nale|y uwzgldni w modelowaniu i diagnostyce oka. Brakuje dzisiaj kompaktowego modelu, zdolnego peBni wszystkie powy|sze funkcje. Na seminarium zaprezentowane bd wyniki badaD zmierzajce do okre[lenia takiego modelu gaBki ocznej.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /366/ <div class="p"><!----></div> Date: Wednesday 2018.02.14 <div class="p"><!----></div> Speaker: <b>Dr Jan Guzowski</b> <div class="p"><!----></div> Affiliation: Instytut Chemii Fizycznej PAN, Warszawa <div class="p"><!----></div> Title: <font color="#0000FF">Structure and dynamics of droplet aggregates: from small clusters to elongated threads and large tissue-like conglomerates</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Generation and manipulation of tiny aqueous compartments by external flow finds numerous applications in analytical sciences where each compartment (droplet) may be used as a separate chemical- or bio-reactor. In this talk I will focus on material-science perspective on droplet microfluidics in which individual compartments are treated as building blocks of larger structures. It is known that concentrated emulsions behave like soft-solids and exhibit both strong plasticity and viscoelasticity. Microfluidics opens new perspectives on studying these tissue-like materials at mesoscale: the possibility of tracking individual droplets gives a unique insight into the process of their self-assembly into ordered, reconfigurable structures. In particular, we observe a variety of small, compact clusters with well-defined point-group symetries. In presence of external flow the structures get stretched into semi-solid granular threads with long-range translational order. Finally, we study relaxation dynamics of large spheroidal aggregates composed of hundreds or thousands of droplets (10^2 &lt;/N/&lt;10^4 ) and compare the obtained results with similar experiments on cell aggregates reported previously in the literature. We try to draw possible mechanistic analogies between droplet-based structures and actual biological micro-tissues.</blockquote> <div class="p"><!----></div> Chair: Dr Zbigniew Rozynek <div class="p"><!----></div> </li> <li> /365/ <div class="p"><!----></div> Date: Friday 2018.02.09 <div class="p"><!----></div> Speaker: <b>Dr Maciej Misiorny</b> <div class="p"><!----></div> Affilation: ZakBad Fizyki Mezoskopowej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Spin-dependent transport of electrons trough molecular junctions in the Kondo regime (Seminarium habilitacyjne)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Nanojunctions containing individual impurities strongly tunnel coupled to leads have proven to be an excellent test-bed for studying quantum many body effects in electronic transport, among which the Kondo effect is one of the most prominent ones. The role of such impurities can be played, for instance, by quantum dots, magnetic atoms or molecules. A proper understanding of the effect of charge and spin correlations on electronic transport is especially sought for devices based on large-spin (S&#62;1/2) impurities exhibiting spin anisotropy. This stems from the fact that such systems are a suitable platform for applications in emerging technologies for storage and processing information. In this talk, I will address different effects that can arise in strongly correlated spin-polarized transport through junctions with spin-anisotropic impurities. Specifically, I will discuss the influence of spin anisotropy on transport characteristics, as well as demonstrate how to control spin anisotropy of an impurity with the aid of spintronic exchange fields.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /364/ <div class="p"><!----></div> Date: Thursday 2018.02.08 <div class="p"><!----></div> Speaker: <b>Prof. Frederic Paul</b> <div class="p"><!----></div> Affiliation: University of Rennes1/CNRS, Institute of Chemical Sciences, France <div class="p"><!----></div> Title: <font color="#0000FF">Redox-active Group </td><td width="150"> Metal-Alkynyl Complexes: Toward Molecules and Materials with Electro-switchable Optical Properties</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Over the last decade, the design of molecular structures allowing the control of a given property (electron transfer, magnetism, catalysis) using an external stimulus, such as electron-exchange, constitutes an important goal, both from the fundamental and applied standpoint. The facile and reversible M(II)/M(III) redox process exhibited by several Fe(II) and Ru(II) &#963;-arylacetylides fragments of formula "L<sub>4</sub>XM(C &#8801; C-Ar)-" can conveniently be used to reach molecular assemblies with large and redox-switchable third-order nonlinear optical (NLO) properties such as 1 or 2 [1,2]. Finally, attempts to extend this concept to fluorescence or two-photon absorption, or to access related electroswitchable materials will be reported.<br /> <br /> [1] M. P. Cifuentes, M. G. Humphrey, J. P. Morall., M. Samoc, F. Paul, T. Roisnel, C. Lapinte Organometallics. 2005, 24, 4280-4288 (and refs. cited).<br /> [2] (a) Gauthier, N.; Argouarch, G.; Paul, F.; Toupet, L.; Ladjarafi, A.; Costuas, K.; Halet, J.-F.; Samoc, M.; Cifuentes, M. P.; Corkery, T. C.; Humphrey, M. G. Chem. Eur. J. 2011, 17, 5561. (b) N. Gauthier , C. Olivier , S. Rigaut , D. Touchard , T. Roisnel , M. G. Humphrey , F. Paul Organometallics 2007, 26, 1063.<br /> [3] N. Gauthier, G. Argouarch, F. Paul, M. G. Humphrey, L. Toupet, Ababou-Girard, S., H. Sabbah, P. Hapiot, B. Fabre, Adv. Mater. 2008, 20, 1952.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Jacek Kubicki <div class="p"><!----></div> </li> <li> /363/ <div class="p"><!----></div> Date: Wednesday 2018.02.7 <div class="p"><!----></div> Speaker: <b>Dr Arkadiusz Matwijczuk</b> <div class="p"><!----></div> Affiliation: Department of Physics, University of Life Sciences in Lublin <div class="p"><!----></div> Title: <font color="#0000FF">Organizacja molekularna 1,3,4-tiadiazaoli z funkcj 2,4-dihydroksyfenylu w rozpuszczalnikach organicznych oraz w ukBadach modelowych o znaczeniu biologicznym</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Matwijczuk.pdf">[PDF]</a>&nbsp; Wybrane do badaD wBa[ciwo[ci fotofizycznych zwizki z grupy 1,3,4-tiadiazoli wykazuj gBwnie dziaBanie neuroprotekcyjne, przeciwgrzybiczne oraz antynowotworowe. Badania spektroskopowe zwizkw wykonane metodami spektroskopii molekularnej pozwoliBy zaobserwowa, w przypadku cz[ci struktur w [rodowisku wodnym, bardzo interesujce zjawisko podwjnej fluorescencji. Efekt ten mo|e by indukowany zmian pH roztworw wodnych, temperatury oraz efektami agregacyjnymi. W przypadku analogicznych pomiarw widm zwizkw wykonanych w r|nych rozpuszczalnikach organicznych, obserwowano tylko pojedyncze pasmo fluorescencji. Badania r|nych analogw tej grupy zwizkw wykazaBy, |e mo|na indukowa wy|ej wymieniony efekt rwnie| w rozpuszczalnikach oraz modelowych ukBadach biologicznych poprzez zmian st|enia zwizku lub modyfikacj jego podstawnika. W wodnych roztworach metanolu o okre[lonej kwasowo[ci obserwowano najcz[ciej dwa osobne, cz[ciowo pokrywajce si, pasma fluorescencji. W oparciu o dane krystalograficzne i badania fluorescencyjne monokrysztaBw zwizkw stwierdzono, |e mog one przyjmowa dwie konformacje w zale|no[ci od orientacji przestrzennej grupy -OH znajdujcej si w pozycji orto wzgldem pier[cienia tiadiazolowego. W zale|no[ci od przyjmowanej konformacji w widmach emisji obserwujemy efekt podwjnej fluorescencji lub dwa cz[ciowo pokrywajce si pasma emisji. Szereg badaD wykonanych metodami spektroskopowymi takimi jak technika RLS, pomiary czasw |ycia fluorescencji oraz pomiary widm emisji i wzbudzenia fluorescencji wskazuj, |e w wyja[nieniu natury zaobserwowanych efektw fluorescencyjnych pomocna jest zarwno wiedza na temat konformacji molekuB jak i wystpowania efektw agregacyjnych w roztworze. UkBad w ktrym czsteczki przyjmuj konformacj z grup -OH z pier[cienia rezorcylowego ustawion bli|ej atomu azotu z pier[cienia 1,3,4-tiadiazolowego prawdopodobnie zwiksza mo|liwo[ wewntrzmolekularnego przeniesienia Badunku i powstawania sBabego stanu elektronowego zwizanego z tym przeniesieniem, prowadzcego w konsekwencji do powstawania efektu podwjnej fluorescencji tych czsteczek, co potwierdzaj obliczenia kwantowomechaniczne metodami [TD]DFT. Obie obserwowane konformacje odpowiednio stabilizowane przypuszczalnie mo|e r|ni te| zdolno[ oddziaBywaD biologicznych. Warto podkre[li, |e badania biologiczne tej grupy zwizkw wykazaBy rwnie| grzybobjcze efekty synergistyczne z amfoterycyn B w stosunku do kilku szczepw grzybw patogennych w hodowlach in vitro. </blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /362/ <div class="p"><!----></div> Data: poniedziaBek 5.02.2018 <div class="p"><!----></div> Prelegent: <b>Mgr Daria Larowska</b> <div class="p"><!----></div> Afiliacja: ZakBad Fizyki Chemicznej, WydziaB Chemii UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Fotokatalityczny rozkBad wody w ukBadach barwnik /tlenek grafenu/ kompleks kobaltu.</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Konwersja energii sBonecznej na energi w formie paliwa wydaje si by jednym z najbardziej obiecujcych sposobw na zaspokojenie potrzeb energetycznych [wiata w przyszBo[ci. Szczeglnie du|e nadzieje pokBadane s w rozkBadzie wody (water splitting) prowadzcym do gospodarki opartej na wodorze jako podstawowym paliwie. Opracowanie taniej, wydajnej i szybkiej metody produkcji wodoru, jest podstawowym warunkiem, ktry musi by speBniony by wodr mgB zastpi bie|ce no[niki energii. Obecne metody wykorzystywane do kierowanego [wiatBem rozkBadu wody podzielone mog zosta na trzy grupy: metody termochemiczne, fotobiologiczne oraz fotokatalityczne. W ramach seminarium omwiona zostanie koncepcja fotokatalitycznej dekompozycji wody w ukBadach barwnik/ tlenek grafenu/kompleks kobaltu  ich charakterystyka, wBa[ciwo[ci oraz metodologia badaD. Powierzchnia tlenku grafenu dziki jego unikalnym wBa[ciwo[ciom mo|e zosta sfunkcjonalizowana za pomoc czsteczek oraz nanomateriaBw. GBwna korzy[ zastosowania takich hybryd wi|e si zachodzcym w nich transportem elektronu od wzbudzonej czsteczki barwnika do katalizatora kobaltowego poprzez arkusz tlenku grafenu (GO), w wyniku czego nastpuje redukcja protonw i utworzenie wodoru czsteczkowego.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. UAM Marcin ZiBek <div class="p"><!----></div> </li> <li> /361/ <div class="p"><!----></div> Date: Friday 2018.02.2 <div class="p"><!----></div> Speaker: <b>Dr Jadwiga Nieminuszczy</b> <div class="p"><!----></div> Affiliation: Division of Cancer Biology, Institute of Cancer Research, London, UK <div class="p"><!----></div> Title: <font color="#0000FF">EXD2 nuclease safeguards the genome against replicative stress</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The maintenance of replication fork stability is essential for faithful genome duplication and suppression of carcinogenesis. In an effort to further our understanding of the mechanism of replication fork repair we performed an analysis of proteins recruited to DNA replication forks using the iPOND technique. This analysis identified EXD2, a nuclease that we have shown recently to promote DNA-end resection and homology-directed repair1, as a novel factor present at replication forks. EXD2 is required for efficient ATR activation and fork restart in response to replicative stress. Moreover, purified recombinant EXD2 can efficiently process synthetic DNA structures mimicking those that are generated at stalled/collapsed replication forks. In keeping with this, EXD2-deficient cells are sensitive to a plethora of agents that interfere with replication fork progression. Failure to timely complete DNA synthesis leads to the persistence of under-replicated DNA, which can manifest as anaphase bridges, 53BP1 OPT domains and/or cause formation of micronuclei. Consistent with EXD2 s role in promoting efficient genome duplication, we observe that EXD2-deficient or EXD2-nuclease dead cells display a significant increase in the frequency of all these markers. Thus, our data identify EXD2 as a novel component of the replication fork protection pathway. We propose that EXD2 processes stalled/collapsed replication forks and by doing so, promotes efficient fork restart assuring accurate completion of DNA replication. <div class="p"><!----></div> [1] R. Broderick et al., EXD2 promotes homologous recombination by facilitating DNA end resection, Nat Cell Biol 18, 271-280 (2016).</blockquote> <div class="p"><!----></div> Chair: Dr PaweB Zawadzki <div class="p"><!----></div> </li> <li> /360/ <div class="p"><!----></div> Date: Wednesday 2018.01.31 <div class="p"><!----></div> Speaker: <b>Dr Piotr Korcyl</b> <div class="p"><!----></div> Affiliation: WydziaB Fizyki, Astronomii i Informatyki Stosowanej Uniwersytetu JagielloDskiego <div class="p"><!----></div> Title: <font color="#0000FF">Using perturbation theory for non-perturbative calculations</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Nowadays many inputs of phenomenological models are taken from lattice simulations of Quantum Chromodynamics. These numerical methods, based on Monte Carlo techniques, always stress their superiority against other approaches by arguing that all steps of computations are from first principles and truly non-perturbative. However many of the most precise results use in one way or another perturbation theory. In this talk I will try to explain the intertwinned relation between non-perturbative simulations and perturbation theory and discuss some of the modern techniques of getting perturbative results on a lattice.</blockquote> <div class="p"><!----></div> Chair: dr hab. Krzysztof Cichy <div class="p"><!----></div> </li> <li> /359/ <div class="p"><!----></div> Data: [roda 24.01.2018 <div class="p"><!----></div> Prelegent: <b>Prof. UAM Gotard BurdziDski</b> <div class="p"><!----></div> Afiliacja: ZakBad Elektroniki Kwantowej, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Osobliwo[ci naukowe ro[lin</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> W ramach seminarium zostan omwione wybrane metody obronne ro[lin takie jak szybki ruch zwizany ze skBadaniem li[ci, wytwarzaniem substancji trujcych, lub zapachu, ktry przywabia owady drapie|ne. Szczeglna uwaga zostanie po[wicona ro[linom owado|ernym, ktrych ruch puBapkujcy bywa zaskakujco szybki (w czasie ok. 3 ms u Ultricularia inflata), co wymaga stosowania szybkich kamer (15000 klatek na sekund). Omwione zostan rwnie| aspekty zwizane z powabno[ci kwiatw zarwno w zakresie akustyki (li[ o ksztaBcie czaszy stanowi akustyczn echo-latarni dla nietoperzy zapylajcych kwiaty Marcgravia evenia), jak i optyki (ubarwienie strukturalne pBatkw kwiatowych). GBwn rol ubarwienia kwiatw peBni barwniki, spo[rd ktrych dla betalain wykazali[my funkcj fotoprotekcyjn.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /358/ <div class="p"><!----></div> Data: poniedziaBek 22.01.2018 <div class="p"><!----></div> Prelegent: <b>Dr hab. Tomasz Grzyb</b> <div class="p"><!----></div> Afiliacja: ZakBad Ziem Rzadkich, WydziaB Chemii UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Up-konwersja w nanomateriaBach domieszkowanych jonami lantanowcw: synteza, wBa[ciwo[ci strukturalne i spektroskopowe</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Luminescencja jonw lantanowcw (Ln<sup>3+</sup>) jest tematem intensywnych badaD, ze wzgldu na rosnce zapotrzebowanie domieszkowanych nimi materiaBw w wielu dziedzinach. W odpowiednio zaprojektowanych materiaBach luminescencja jonw Ln<sup>3+</sup> jest wydajna i intensywna, a przede wszystkim mo|liwe jest uzyskanie procesu konwersji energii w gr - up-konwersji (UC, ang. up-conversion). Zjawisko to odpowiada nieliniowemu procesowi absorpcji dwch lub wikszej ilo[ci fotonw w wyniku ktrej nastpuje emisja promieniowania o energii wy|szej ni| zaabsorbowanego. Od kilku lat obserwuje si wzrost zainteresowania nanoczstkami wykazujcymi UC, gBwnie ze wzgldw na szerokie zastosowania w medycynie i biologii. Jednymi ze zwizkw charakteryzujcymi si wBa[ciwo[ciami umo|liwiajcymi uzyskanie UC s nieorganiczne fosforany, wanadany i fluorki. Odpowiednia metoda syntezy, [rodowisko reakcji oraz dobr reagentw umo|liwiaj uzyskanie produktw o niewielkim rozmiarze krystalitw (&lt; 50 nm). Otrzymano szereg nanomateriaBw opartych o zwizki typu REPO4, REVO<sub>4</sub>, SrF<sub>2</sub>, LuF<sub>3</sub>, NaLuF<sub>4</sub> oraz MRE<sub>2</sub>F<sub>7</sub> (gdzie M = Ca, Sr, Ba; RE = Y, La, Gd, Lu), domieszkowanych jonami Yb<sup>3+</sup> i Ho<sup>3+</sup>, Er<sup>3+</sup>, Tm<sup>3+</sup>, Tb<sup>3+</sup> lub Eu<sup>3+</sup>. Otrzymane produkty scharakteryzowano pod wzgldem ich struktury i morfologii oraz skBadu pierwiastkowego. Najwa|niejszym elementem przeprowadzonych badaD byBo okre[lenie wBa[ciwo[ci spektroskopowych otrzymanych materiaBw. W celu otrzymania peBnej charakterystyki luminescencyjnej otrzymanych produktw wykonano pomiary widm wzbudzenia (tak|e w zakresie podczerwieni) oraz emisji, a tak|e zanikw emisji oraz zale|no[ci intensywno[ci luminescencji od mocy (lub energii) promieniowania wzbudzajcego. PozwoliBo to na poznanie procesw zachodzcych w otrzymanych materiaBach, zaproponowanie mechanizmw tych procesw, a tak|e na optymalizacj badanych ukBadw pod wzgldem intensywno[ci luminescencji.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. UAM Marcin ZiBek <div class="p"><!----></div> </li> <li> /357/ <div class="p"><!----></div> Date: Wednesday 2018.01.17 <div class="p"><!----></div> Speaker: <b>Prof. Matteo Rizzi</b> <div class="p"><!----></div> Affiliation: Johannes Gutenberg-Universitt, Institut fr Physik, Mainz, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Exploring Interacting Topological Insulators with Ultracold Atoms: the Synthetic Creutz-Hubbard Model</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Understanding the robustness of topological phases of matter in the presence of strong interactions, and synthesising novel strongly-correlated topological materials, lie among the most important and difficult challenges of modern theoretical and experimental physics. The synthetic Creutz-Hubbard ladder is a paradigmatic model that provides a neat playground to address these challenges, including the generation of flat bands as well as of non-doubled Dirac dispersion relations. In [1], we present a theoretical analysis of the competition between correlated topological phases and orbital quantum magnetism in the regime of strong interactions at half-filling. We predict topological quantum phase transitions for weak and intermediate interactions with different underlying conformal field theories (CFTs), i.e. Dirac versus Majorana CFTs. In [2], we study the response of an interacting system of Dirac-Weyl fermions confined in a one-dimensional (1D) ring: we show that tuning of interactions leads to a unique many-body system that displays either a suppression or an enhancement of the Drude weight the zero-frequency peak in the ac conductivity with respect to the non-interacting value. Both studies are furthermore confirmed and extended by extensive numerical simulations based on matrix product states (MPS) and binary Tree Tensor Networks (bTTN). Moreover we propose how to experimentally realize this model in a synthetic ladder, made of two internal states of ultracold fermionic atoms in a one-dimensional optical lattice.<br /><br /> [1] J. Jnemann, et al., PRX 7, 031057 (2017)<br /> [2] M. Bischoff, et al., arXiv:1706.02679</blockquote> <div class="p"><!----></div> Chair: Dr Agnieszka Cichy <div class="p"><!----></div> </li> <li> /356/ <div class="p"><!----></div> Data: PoniedziaBek 2018.01.15 <div class="p"><!----></div> Prelegent: <b>Prof. UAM Ireneusz Weymann</b> <div class="p"><!----></div> Afiliacja: ZakBad Fizyki Mezoskopowej, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Seminarium profesorskie</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Podczas seminarium oglnie omwi tematyk moich badaD, ktra dotyczy teoretycznej analizy wBasno[ci transportowych skorelowanych ukBadw nanoskopowych. Nastpnie, bardziej szczegBowo, przedstawi kilka najwa|niejszych zagadnieD, ktrymi zajmowaBem si po uzyskaniu stopnia naukowego doktora habilitowanego. W szczeglno[ci przedstawi rezultaty dotyczce badania r|nych egzotycznych stanw Kondo w zBo|onych ukBadach kropek kwantowych, omwi tak|e badania dotyczce stanw zwizanych Andreeva w hybrydowych ukBadach nanoskopowych, a tak|e badania zwizane z kwaziczstkami Majorany.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /355/ <div class="p"><!----></div> Data: Zroda 2018.01.10 <div class="p"><!----></div> Prelegent: <b>Prof. Marcin Molski</b> <div class="p"><!----></div> Afiliacja: ZakBad Chemii Teoretycznej, WydziaB Chemii UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Kwantowe Fenomenologiczne Uniwersalia</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Koncepcja fenomenologicznych uniwersaliw wprowadzona przez Castorin, Delsanto i Guiot (CDG) [1], umo|liwia generowanie funkcji i modeli opisujcych ewolucj w czasie ukBadw biologicznych, takich jak organy, organizmy, ekosystemy, czy nowotwory. W zale|no[ci od stopnia zBo|ono[ci (nieliniowo[ci) mo|na badane ukBady sklasyfikowa jako U0, U1 i U2, ktrym odpowiadaj funkcje biologicznego wzrostu: eksponent (U0), Gompertza (U1), Westa-Browna-Enquista, Richardsa i von Bertalanffy ego (U2). Referat prezentuje prost modyfikacj klasycznego schematu CDG [2,3], ktra pozwala na uzyskanie kwantowych rozwizaD rwnaD Schrdingera i Feinberga-Horodeckiego dla oscylatora harmonicznego oraz oscylatorw anharmonicznych, reprezentujcych klasy Q0, Q1 i Q2 fenomenologicznych uniwersaliw. Uoglnione podej[cie CDG umo|liwia rwnie| wygenerowanie lokalnych i nielokalnych stanw koherentnych oscylatorw, ktre minimalizuj zasad nieoznaczono[ci Heisenberga: poBo|enie-pd i czas-energia. Analiza otrzymanych wynikw dowodzi [2,3], |e przej[cie od rozwizaD kwantowych Qn do klasycznych Un dla n=1,2 zachodzi dla stanu dysocjacji oscylatora. Wtedy funkcje kwantowe przechodz w klasyczne, otrzymane w podej[ciu CDG, co uzasadnia nadan im nazw - rozwizania quasi-kwantowe. Nale| do nich wszystkie najwa|niejsze czasowo-zale|ne modele opisujce ewolucj ukBadw biologicznych oraz przestrzenno-zale|ne funkcje opisujce skumulowan dystrybucj obiektw, r|nicych si rozmiarem (np. [rednic aksonw w wBknie nerwowym).<br /> <div class="p"><!----></div> [1] P. Castorina, P. P. Delsanto, C. Guiot, Physical Review Letters 96 (2006) 188701.<br /> [2] M. Molski, Physics Letters A 381 (2017) 2629 2635.<br /> [3] M. Molski, Physics Letters A 382 (2018) 79 84.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Zbigniew Jacyna-Onyszkiewicz <div class="p"><!----></div> </li> <li> /354/ <div class="p"><!----></div> Data: [roda 20.12.2017 <div class="p"><!----></div> Prelegent: <b>Dr in|. Leszek Kasprzyk</b> <div class="p"><!----></div> Afiliacja: Instytut Elektrotechniki i Elektroniki PrzemysBowej, Politechnika PoznaDska <div class="p"><!----></div> TytuB: <font color="#0000FF">Analiza pracy magazynw energii w pojazdach elektrycznych</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> W ramach seminarium zostan omwione wybrane metody modelowania pracy akumulatorw oraz superkondensatorw w stanach dynamicznych, a tak|e metody estymacji parametrw modelu. Poruszona zostanie krtko problematyka energochBonno[ci pojazdw oraz metody doboru akumulatorw do zasigu i dynamiki jazdy. W referacie zaprezentowane zostan rwnie| przykBadowe wyniki badaD energochBonno[ci pojazdu, analizy pracy akumulatorw oraz metody wydBu|enia |ywotno[ci akumulatorw z wykorzystaniem rozwizaD hybrydowych.</blockquote> <div class="p"><!----></div> Prowadzcy: dr hab. J. W. KBos <div class="p"><!----></div> </li> <li> /353/ <div class="p"><!----></div> Date: Wednesday 2017.12.13 <div class="p"><!----></div> Speaker: <b>Dr Agnieszka Cichy</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Faculty of Physics, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Classical and quantum simulations with ultracold 4-component fermionic mixtures in optical lattices</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The impressive development of experimental techniques in ultracold quantum degenerate gases of alkaline-earth-like atoms in the last years has allowed investigation of strongly correlated systems. Long-lived metastable electronic states in combination with decoupled nuclear spin give the opportunity to study the Hamiltonians beyond the possibilities of current alkali-based experiments. Ytterbium is particularly convenient due to its large number of bosonic and fermionic (e.g. Yb-173) isotopes with a wide range of interaction strengths. In [1] we study finite-temperature properties of ultracold four-component mixtures of alkaline-earth-metal-like atoms in optical lattices that can be effectively described by the two-band spin-1/2 Hubbard model including Hund's exchange coupling term. Our main goal is to investigate the effect of exchange interactions on finite-temperature magnetic phases for a wide range of lattice fillings. We use the dynamical mean-field theory approach and its real-space generalization to obtain finite-temperature phase diagrams including transitions to magnetically ordered phases. It allows to determine optimal experimental regimes for approaching long-range ferromagnetic ordering in ultracold gases. We also calculate the entropy in the vicinity of magnetically ordered phases, which provides quantitative predictions for ongoing and future experiments aiming at approaching and studying long-range ordered states in optical lattices. In [2] we study the thermodynamic properties of four-component fermionic mixtures described by the Hubbard model using the dynamical mean-field-theory approach. Special attention is given to the system with SU(4)-symmetric interactions at half filling, where we analyze equilibrium many-body phases and their coexistence regions at nonzero temperature for the case of simple cubic lattice geometry. We also determine the evolution of observables in low-temperature phases while lowering the symmetry of the Hamiltonian towards the two-band Hubbard model. This is achieved by varying interflavor interactions or by introducing the spin-flip term (Hund's coupling). By calculating the entropy for different symmetries of the model, we determine the optimal regimes for approaching the studied phases in experiments with ultracold alkali and alkaline-earth-like atoms in optical lattices.<br /><br /> <div class="p"><!----></div> [1] A. Cichy, A. Sotnikov, Phys. Rev. A 93, 053624 (2016)<br /> [2] A. Golubeva, A. Sotnikov, A. Cichy, J. Kunea, W. Hofstetter, Phys. Rev. B 95, 125108 (2017)</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /352/ <div class="p"><!----></div> Date: Monday 2017.12.11 <div class="p"><!----></div> Speakers: <b>Dr Mateusz Gierszewski &amp; M. Sc. Eng. Iwona Grdzka</b> <div class="p"><!----></div> Affiliation: ZakBad Elektroniki Kwantowej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Wybrane zagadnienia konwersji energii sBonecznej z konferencji ICP i ISPPCC 2017</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. UAM Marcin ZiBek <div class="p"><!----></div> </li> <li> /351/ <div class="p"><!----></div> Date: Wednesday 2017.12.06 <div class="p"><!----></div> Speaker: <b>Dr MichaB MichaBowski</b> <div class="p"><!----></div> Affiliation: Astronomical Observatory, Faculty of Physics, Adam Mickiewicz University in Poznan <div class="p"><!----></div> Title: <font color="#0000FF">The first observation of radiation from colliding neutron stars  the sources of gravitational waves</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. UAM Agnieszka KryszczyDska <div class="p"><!----></div> </li> <li> /350/ <div class="p"><!----></div> Date: Wednesday 2017.11.29 <div class="p"><!----></div> Speaker: <b>Dr. Jaroslaw Paturej</b> <div class="p"><!----></div> Affiliation: Institute of Physics, University of Szczecin <div class="p"><!----></div> Title: <font color="#0000FF">How macromolecular architecture affects physical properties of polymers</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Paturej.pdf">[PDF]</a>&nbsp; Significant progress in polymerization techniques allows to synthesize macromolecules with complex, yet precisely controlled structure. Three distinct examples are branched bottlebrushes, star polymers and ring-like polymers. During the talk I will demonstrate that variation of macromolecular architecture affects structural, mechanical, interfacial and frictional properties of polymers as compared to conventional linear chains. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /349/ <div class="p"><!----></div> Date: Wednesday 2017.11.22 <div class="p"><!----></div> Speaker: <b>Prof. Igor Lyubchanskii</b> <div class="p"><!----></div> Affiliation: Donetsk Physical and Technical Institute of the National Academy of Sciences of Ukraine and Department of Physics and Technology, Donetsk National University <div class="p"><!----></div> Title: <font color="#0000FF">Static magneto-optic effects in photonic-magnonic crystals</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /348/ <div class="p"><!----></div> Date: Wednesday 2017.11.15 <div class="p"><!----></div> Speaker: <b>Prof. Konstantin Guslienko</b> <div class="p"><!----></div> Affiliation: Universidad Del Pais Vasco/Euskal Herriko Unibertsitatea, San Sebastian, Spain <div class="p"><!----></div> Title: <font color="#0000FF">Skyrmion stability and dynamics in ultrathin magnetic dots</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /347/ <div class="p"><!----></div> Date: Tuesday 2017.11.14 <div class="p"><!----></div> Speaker: <b>Dr Junghee Ryu</b> <div class="p"><!----></div> Affiliation: Centre for Quantum Technologies, National University of Singapore, Singapore <div class="p"><!----></div> Title: <font color="#0000FF">Operational quasiprobabilities in quantum theory</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Negative probability was introduced by Feynman to address a mystery of quantum theory [1]. Since then there have been many studies based on such approach. But from the point of view of the operationalism, there are conceptual problems of interpreting such probability with respect to a given physical situation. In other words, the meaning of the negative values is not clear. Recently, an operational quasiprobabilities (OQs) are introduced for qudits as well as optical fields states [2,3]. Here, we will discuss how the OQs deal with those problems.<br /> [1] R. Feynman, in Negative Probabilities in Quantum Mechanics, edited by B. Hiley and F. Peat (Routledge, London, 1987).<br /> [2] J. Ryu, J. Lim, S. Hong, and J. Lee, Operational quasiprobabilities for qudit, Phys. Rev. A 88, 052123 (2013).<br /> [2] J. Jae, J. Ryu, and J. Lee, Operational quasiprobabilities for continuous variables, Phys. Rev. A 96, 042121 (2017). </blockquote> <div class="p"><!----></div> Chair: Dr hab. PaweB KurzyDski <div class="p"><!----></div> </li> <li> /346/ <div class="p"><!----></div> Date: Thursday 2017.11.9 <div class="p"><!----></div> Speaker: <b>Dr Koji Maruyama</b> <div class="p"><!----></div> Affiliation: Osaka City University, Osaka, and Waseda University, Tokyo, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Hilbert space structure induced by limited access</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Having seen the possibility of controlling multi-body quantum systems indirectly, as well as that of identifying the entire Hamiltonian, now let us consider a more fundamental/abstract problem. When our direct access, or the number of (direct) control probes, to the system is limited, what is the extent to which it can be identified/controlled? This is a natural question, especially after realising that there are (infinitely) many systems that cannot be distinguished via restricted access. In our attempt to understand the intrinsic origin of the indistinguishability, we have revealed the characteristic structures of Hilbert space that is induced by the limited access. The structure tells us what draws the line between controllable and uncontrollable subsystems, which necessarily leads to indistinguishability as well.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /345/ <div class="p"><!----></div> Date: Wednesday 2017.11.8 <div class="p"><!----></div> Speaker: <b>Dr Koji Maruyama</b> <div class="p"><!----></div> Affiliation: Wolfram Research, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Machine Learning by Mathematica (Wolfram Language)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The machine learning functionality has been significantly augmented in Mathematica 11. There are a number of functions that allow us to start machine learning quickly without expertise in this field. At the same time, it provides us with a rich set of components to build up more complex tools, such as deep neural networks. I will show how Mathematica can be used to carry out machine learning computations for various types of data sets.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /344/ <div class="p"><!----></div> Date: Wednesday 2017.11.8 <div class="p"><!----></div> Speaker: <b>Dr Koji Maruyama</b> <div class="p"><!----></div> Affiliation: Osaka City University, Osaka, and Waseda University, Tokyo, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Two-qubit control suffices to efficiently perform quantum computation on a spin chain</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Towards the full manipulation of multi-body quantum systems, there are still a number of obstacles we have to overcome. We would need some tricks when taming a complex quantum system, contemplating what we can do and what we cannot. In this talk, I will delineate a theoretical guiding principle for quantum controllability, and will present a specific idea for controlling a spin system with a highly limited access. Three important issues, i.e., the controllability, the computability of pulse sequence, and the time-scale of quantum computing operations, are addressed and answered positively.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /343/ <div class="p"><!----></div> Date: Tuesday 2017.11.07 <div class="p"><!----></div> Speaker: <b>Dr Taras Radchenko</b> <div class="p"><!----></div> Affiliation: Department of Solid State Theory, Institute for Metal Physics, National Academy of Sciences of Ukraine, 03142 Kyiv, Ukraine <div class="p"><!----></div> Title: <font color="#0000FF">Electronic and transport properties of (un)strained graphene with structural defects: Numerical calculations</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The study deals with modelling electronic and transport properties of unstrained and uniaxially deformed graphene with structural imperfections: zero-dimensional (point) and one-dimensional (extended) defects. Point defects are modelled as resonant (neutral) adsorbed atoms or molecules, vacancies, charged impurities, and local distortions. Extended (line) defects are attributed to atomic steps and terraces in epitaxially-grown graphene, and grain boundaries, quasi-periodic nanoripples or wrinkles in polycrystalline (chemically vapor-deposited) graphene. Results are obtained numerically using the quantum-mechanical Kubo-Greenwood formalism along with tight-binding approach. Calculated behaviours of electronic density of states and conductivity indicate that deviations from perfection can be useful: they make possible tailoring graphene's electrotransport properties for achievement of new functionalities.</blockquote> <div class="p"><!----></div> Chair: dr Mateusz KempiDski <div class="p"><!----></div> </li> <li> /342/ <div class="p"><!----></div> Date: Monday 2017.11.06 <div class="p"><!----></div> Speaker: <b>Dr Andriy Khobta</b> <div class="p"><!----></div> Affiliation: Unit  Responses to DNA Lesions , Institute of Toxicology, University Medical Center Mainz <div class="p"><!----></div> Title: <font color="#0000FF">Exploiting synthetic DNA lesions to pinpoint the critical repair pathways</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Khobta.pdf">[PDF]</a>&nbsp; DNA damage is a well-recognised causal factor of gene dysfunction in cancers and age-related diseases. Because DNA of all living cells is constantly exposed to a variety of reactive endogenous metabolites and environmental toxicants, DNA damage can never be fully avoided and its complexity comprises dozens of structurally different DNA modifications ("DNA lesions"). Knowledge of the lesion-specific responses of cells is required to characterise hazards of exposure to specific genotoxic agents and, from the translational perspective, to identify molecular susceptibility markers and potential targets for personalised therapeutic interventions.<br /> My team exploits synthetic nucleotide derivatives to understand harmful consequences of individual DNA lesions and the lesion-specific repair mechanisms. To model damage induced by food carcinogens, drugs, environmental toxicants and endogenous cellular mechanisms at specific nucleotide positions, we incorporate synthetic analogs of the respective DNA modifications as building blocks into functional reporter genes [1-2]. Delivered to human host cells, such gene constructs can be efficiently used to monitor functional consequences of defined DNA lesions (tolerance versus toxicity), to characterise determinants of damage recognition by individual repair pathways, and to identify redundancy and potential switch points between the pathways [3-7]. I will discuss some recent applications of vectors containing the elements of synthetic nucleic acids to address questions in the fields of DNA repair and epigenetics.<br />&nbsp;<br /> [1] Lhnsdorf B, et al. (2012) Analytical Biochemistry 425: 47-53<br /> [2] Kitsera N, et al. (2011) Nucleic Acids Research 39: 5926-5934<br /> [3] Kitsera N, et al. (2014) PloS One 9: e94405<br /> [4] Allgayer J, et al. (2013) Nucleic Acids Research 41: 8559-8571<br /> [5] Lhnsdorf B, Epe B, Khobta A (2014) The Journal of Biological Chemistry 289: 22008-22018<br /> [6] Allgayer J, et al. (2016) Nucleic Acids Research 44: 7267-7280<br /> [7] Kitsera N, et al. (2017) Nucleic Acids Research doi: 10.1093/nar/gkx718 [Epub ahead of print]. </blockquote> <div class="p"><!----></div> Chair: Dr PaweB Zawadzki <div class="p"><!----></div> </li> <li> /341/ <div class="p"><!----></div> Date: Wednesday 2017.10.25 <div class="p"><!----></div> Speaker: <b>Dr PaweB Zawadzki</b> <div class="p"><!----></div> Affiliation: Molecular Biophysics Division, Faculty of Physics, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Single-molecule imaging of DNA repair in single living cells</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Zawadzki.pdf">[PDF]</a>&nbsp; Every single day an individual cell must deal with &#126;10,000 lesions in order to prevent accumulation of harmful mutations, which might lead to cancer. Understanding the mechanism of DNA repair is therefore of central importance to our understanding of cancer and for the development of new therapeutics against it. Repair pathways are highly conserved, in both prokaryotes and eukaryotes, and studying the simpler pathways in bacteria provides key insight into the mechanism used by human cells to repair damaged DNA. We apply an interdisciplinary approach to understand the mechanistic details of DNA repair pathways (Nucleotide Excision Repair, Mismatch Repair, Base Excision Repair) in living Escherichia coli (and human cells in near future). We use a combination of cutting-edge single-molecule methods to elucidate how repair enzymes participate in removal of damaged nucleotides. Firstly, live super-resolution microscopy combined with single-particle tracking is used to study the behaviour of individual proteins as they scan the genome and repair damaged DNA. To complement this, we use cell biology, genetics and TIRF microscopy to verify and extend the conclusions established using a super-resolution microscopy. Together, this will provide a comprehensive understanding of the bacterial repair pathway, and constitute a starting point to understanding the way mutations in human repair proteins contribute to the development of cancer.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /340/ <div class="p"><!----></div> Data: [roda 2017.10.18 <div class="p"><!----></div> Prelegent: <b>Dr Anna Marciniak</b> <div class="p"><!----></div> Afiliacja: Obserwatorium Astronomiczne, WydziaB Fizyki UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Pier[cieD wokB planety karBowatej Haumea oraz jej rozmiary, ksztaBt i gsto[ z obserwacji zakrycia gwiazdowego</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Na seminarium omwione zostan wyniki badaD opublikowane w ostatnim numerze <a href="http://www.nature.com/nature/journal/v550/n7675/full/nature24051.html?foxtrotcallback=true">Nature 550, 219 (2017)</a>&nbsp; w artykule pt. <em>The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation</em>. </blockquote> <div class="p"><!----></div> Prowadzca: prof. UAM Agnieszka KryszczyDska <div class="p"><!----></div> </li> <li> /339/ <div class="p"><!----></div> Date: Thursday 2017.10.12 <div class="p"><!----></div> Speaker: <b>Doc. Jan Soubusta</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Experimental tests of coherence and entanglement conservation</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In the year 2015, Svozilk and co-authors published a paper [Phys. Rev. Lett. 115, 220501 (2015)] discussing migration of coherence of the studied system between its subsystems. The authors showed that the coherence is also linked to the correlations between the subsystems. The authors mentioned a few interesting examples, where it is possible to study conservation of the maximal accessible coherence in the system. We want to demonstrate the effect of migration of coherence of the system on two experimental schemes implemented using polarization states of photons. The first scheme is based on linear optical controlled-phase quantum gate and the second scheme is utilizing effects of nonlinear optics.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /338/ <div class="p"><!----></div> Date: Thursday 2017.10.12 <div class="p"><!----></div> Speaker: <b>Doc. Karel Lemr</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Building a quantum router for discrete photons using linear optics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk discusses our experimental implementation of a linear-optical quantum router. This device allows single-photon polarization-encoded qubits to be routed coherently into two output modes. Routing is programmed by two identical control qubits and over this procedure, the quantum information stored in the state of the routed photon is not disturbed. The success probability of our scheme can be increased up to 25% making it the most efficient linear-optical quantum router known to this date.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /337/ <div class="p"><!----></div> Date: Thursday 2017.10.12 <div class="p"><!----></div> Speaker: <b>Dr Antonn ernoch</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Experimental characterization of photon-number noise in Rarity-Tapster-Loudon-type interferometers</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We develop a simple model describing inherent photon-number noise in Rarity-Tapster-Loudon-type interferometers. This noise is caused by generating photon pairs in the process of spontaneous parametric down-conversion and adding a third photon by attenuating the fundamental laser mode to the single-photon level. We experimentally verify our model and present resulting signal-to-noise ratios as well as obtained three-photon generation rates as functions of various setup parameters. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /336/ <div class="p"><!----></div> Date: Wednesday 2017.10.11 <div class="p"><!----></div> Speaker: <b>Dr Alexander Mikkelsen</b> <div class="p"><!----></div> Affiliation: Faculty of Physics, Adam Mickiewicz University <div class="p"><!----></div> Title: <font color="#0000FF">Droplets covered by particles: Physics and applications</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Mikkelsen.pdf">[PDF]</a>&nbsp; Clay and colloidal particles of nano- and micrometer size adsorb strongly at liquid interfaces where they display a wide range of studies and applications [1],[2], for instance to stabilize emulsions, in material development and to encapsulate, store and release a range of materials such as medicine, cells, food or oil. Structuring of particles on droplets is a particularly hot topic these days with increasing interest and efforts devoted to the synthesis of functional colloidal capsules. Such capsules, with tailored physical, chemical or morphological characteristics, can be used as building blocks to prepare complex structures with advanced and novel material properties [3]. The talk will demonstrate and explain how weakly conductive (leaky-dielectric) droplets behave when suspended in another weakly conducive fluid and subjected to an external electric field. Especially how electrohydrodynamic and eletrorheological effects in such droplets can be used to structure and dynamically control colloidal particle assemblies at droplet surfaces. This includes electric-field-assisted convective assembly of jammed colloidal  ribbons , electrorheological colloidal chains confined to a two-dimensional surface and spinning colloidal domains. In addition, the talk will demonstrate the size control of  pupil like openings in colloidal shells [4], present a simple and robust method to assemble colloidal shells of controlled heterogeneity [5] and discuss some of the many applications for particle covered droplets.<br /> <div class="p"><!----></div> &nbsp;[1] B. P. Binks, Curr. Opin. Colloid In. 7, 21 (2002).<br />&nbsp;[2] C. Zeng, H. Bissig, and A. D. Dinsmore, Solid State Commun. 139, 547 (2006).<br />&nbsp;[3] B Bollhorst, T., K. Rezwan, and M. Maas, Chemical Society Reviews, 46, 2091 (2017).<br />&nbsp;[4] P. Dommersnes, Z. Rozynek, A. Mikkelsen, R. Castberg, K. Kjerstad, K. Hersvik, and J. O. Fossum, Nat. Commun. 4, 2066 (2013).<br />&nbsp;[5] Z. Rozynek, A. Mikkelsen, P. Dommersnes, and J. O. Fossum, Nat.Commun. 5, 3945 (2014). </blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /335/ <div class="p"><!----></div> Date: Wednesday 2017.10.4 <div class="p"><!----></div> Speaker: <b>Dr Zbigniew Rozynek</b> <div class="p"><!----></div> Affiliation: Institute of Acoustics, Faculty of Physics, UAM <div class="p"><!----></div> Title: <font color="#0000FF">Granular and colloidal 1D structures: Physics and applications</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Rozynek.pdf">[PDF]</a>&nbsp; The fabrication of 1D granular and colloidal materials is of considerable interest as they offer opportunities for a variety of electronic applications, including granular conductors, flexible electronics for wearable devices, electromagnetic energy transport, etc. These particle structures can be assembled either from particle groups or from individual particles. In this talk I will show structures composed of individual microparticles. There are several methods for fabricating particle structures, including lithography, cluster-assisted assembly and colloidal polymerization, pore-assisted assembly, and field-directed assembly in electro- or magneto-rheological fluids. The latter is generally considered to be a simple and effective approach to form particle structures. Thou fast and efficient, the external field-driven approach suffers from three major limitations to its applications, for example in electronic-device manufacturing. First, the assembly often takes place in a bulk liquid; it is difficult to remove the bulk liquid and maintain the assembled structure intact. Second, in principal only linear 1D structures can be formed along the field lines and positioning of the formed structure is greatly limited. Third, maintaining the formed structures normally requires a continuous energy supply; once the external field is turned off, the structures disintegrate. Within this talk, I will present novel routes to overcoming these limitations, making it possible to easily fabricate self-sustained 1D structures outside of a dispersion. <div class="p"><!----></div> For more details, see the following article: Formation of printable granular and colloidal chains through capillary effects and dielectrophoresis, <a href="https://www.nature.com/articles/ncomms15255 ">Nature Communications 2017, 8, 15255</a>&nbsp;</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /334/ <div class="p"><!----></div> Date: Wednesday 2017.09.27 <div class="p"><!----></div> Speaker: <b>Dr Aukasz Laskowski</b> <div class="p"><!----></div> Affiliation: Department of Microelectronics and Nanotechnology, Czstochowa University of Technology <div class="p"><!----></div> Title: <font color="#0000FF">Practical application for porous silica template functional nanomaterials</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Laskowski.pdf">[PDF]</a>&nbsp; The presentation will be devoted to novel functional nanomaterials precisely tailored for specific applications. The materials are based on porous silica matrices both in the form of powder and vertically aligned thin films. Powdered SBA-15 silica activated by copper ions can play a role of strongly antimicrobial specimen with restricted migration into environment. Thin film form of silica matrices with vertically aligned channels makes the materials highly applicative in electronics or IT technologies. We consider three types of such silica-templated materials for application as antimicrobial specimen or electronics elements. Porous silica films containing permanent magnetic specimen inside pores can be used for fabrication of super-dense magnetic memory. When silica is activated by individual molecular magnets in pores bottom the material can play a role of layout of molecular neurons. Porous silica thin layer containing strongly dipolar units have strong non-linear optical (NLO) response, that can be tuned by means of functional groups concentration variation.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /333/ <div class="p"><!----></div> Date: Monday 2017.09.25 <div class="p"><!----></div> Speaker: <b>Prof. David Sherratt</b> <div class="p"><!----></div> Affiliation: Department of Biochemistry, University of Oxford, UK <div class="p"><!----></div> Title: <font color="#0000FF">How one chromosome makes two</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Sherratt.pdf">[PDF]</a>&nbsp; Chromosomes were first observed and the process of their segregation in mitosis described by Walther Flemming, working in Kiel, Germany, in 1878, but it was another 25 years before their role in inheritance was proposed. The coordinated processes of chromosome replication, unlinking and subsequent chromosome segregation underlie the life process. Defects in these processes lead to genetic diseases and a multitude of pathologies in humans, while interfering with these processes is the basis of the action of many antibiotics and anti-cancer agents. <br /> My laboratory studies the molecular mechanisms of the action of the molecular machines that act in these processes in the bacterium E. coli by using a combination of in vivo and in vitro biochemistry, quantitative single-molecule imaging and genetics. The presentation will focus on the importance of eliminating ensemble averaging wherever possible and in the challenges of reconciling in vitro and in vivo experimental data and in building them into a mechanistic framework.</blockquote> <div class="p"><!----></div> Chair: Dr PaweB Zawadzki <div class="p"><!----></div> </li> <li> /332/ <div class="p"><!----></div> Date: Thursday 2017.09.14 <div class="p"><!----></div> Speaker: <b>Prof. Charles Henry Bennett</b> <div class="p"><!----></div> Affiliation: IBM Fellow at IBM Research, Thomas J. Watson Research Center in Yorktown Heights, New York. <div class="p"><!----></div> Title: <font color="#0000FF">Is there such a thing as private information?</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> One of the original motivations for quantum information theory was the use of quantum effects to protect the privacy of classical communications. Yet the new theory, which has grown to elegantly encompass all of classical informatics, has undermined the very notion of classical private information, by showing that it sits on a slippery slope between quantum information and public information. Classical privacy survives only as a useful approximation, since in principle any memory so well shielded that it can hold classical data without the environment finding out can also hold superpositions of the classical values, thereby serving as a quantum memory. To recover a sharp notion of classical privacy it suffices to consider scenarios in which some information escapes to a place beyond the reach of one's adversaries.</blockquote> <div class="p"><!----></div> <blockquote><b>Biography:</b> Prof. Bennett is one of the most acclaimed physicists and one of the founding fathers of modern quantum information theory. Among his many discoveries are: reversible computation, explanation of Maxwell's demon paradox, quantum cryptography, and quantum teleportation. He also created the foundations of entanglement theory and quantum communication. Prof. Bennett is a laureate of many awards including this year's Dirac Medal. See <a href="https://en.wikipedia.org/wiki/Charles_H._Bennett_(computer_scientist)">Wikipedia</a>&nbsp; for more details.</blockquote> <div class="p"><!----></div> Chair: Prof. Andrzej Grudka <div class="p"><!----></div> </li> <li> /331/ <div class="p"><!----></div> Date: Friday 2017.09.8 <div class="p"><!----></div> Speaker: <b>Dr Bernadeta Dobosz</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki Medycznej, WydziaB Fizyki, UAM <div class="p"><!----></div> Title: <font color="#0000FF">Badanie metod ESR fizycznych wBa[ciwo[ci funkcjonalizowanych nanoczstek magnetytu jako potencjalnych no[nikw lekw</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> NanomateriaBy ciesz si coraz wiksz popularno[ci w r|nych dziedzinach |ycia, rwnie| w medycynie. Na przykBad nanoczstki magnetyczne stosuje si w obrazowaniu MRI czy w hipertermii. Szczeglnie obiecujce jest ich wykorzystanie jako no[niki lekw w terapiach celowanych. Dziki wBa[ciwo[ciom magnetycznym nanoczstek, stosujc odpowiednie sekwencje pl magnetycznych, mo|na kontrolowa ich ruch. Funkcjonalizowane nanoczstki mogByby dostarcza lek bezpo[rednio do miejsca choroby (stan zapalny, guz) omijajc tkanki zdrowe. Wspomniane wcze[niej wBa[ciwo[ci magnetyczne nanoczstek mo|na bada metod elektronowego rezonansu spinowego (ESR). Otrzymuje si w ten sposb wiele cennych informacji zarwno o rdzeniu magnetycznym nanoczstki jak i jej powierzchni. WBa[ciwo[ci nanoczstek zale| od wielu czynnikw takich jak pokrycie, doBczony materiaB, [rodowisko czy warunki zewntrzne, w ktrych si znajduj. Wszystkie te zale|no[ci mo|na bada metod ESR. Stosujc t metod mo|na rwnie| kontrolowa jako[ nanoczstek oraz [ledzi ich starzenie i agregacj. Szczeglne znaczenie pod ktem zastosowania nanoczstek w terapiach celowanych ma zastosowanie ESR do monitorowania dyfuzji nanoczstek wymuszonej obecno[ci pola magnetycznego.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /330/ <div class="p"><!----></div> Date: Wednesday 2017.09.6 <div class="p"><!----></div> Speaker: <b>Dr Alexander Kvashnin</b> <div class="p"><!----></div> Affiliation: Skolkovo Institute of Science and Technology, Moscow, Russia <div class="p"><!----></div> Title: <font color="#0000FF">Computational materials discovery in various dimensionalities</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Computational materials discovery is a new field of science, and an ongoing scientific revolution. New methods have for the first time enable systematic discovery of superior materials on the computer  instead of the traditional laboratory-based trial-and-error approach. This approach allows scientists to predict and investigate new materials, new phenomena in various dimensionalities, starting from the bulk and moving towards the 2D materials, 1D materials and molecules, clusters. Here the recent research on the computational search for new functional materials will be discussed. Among the 2D materials, particular attention is drawn to such films of atomic thickness as graphene, its derivatives. In addition, many of non-carbon materials, which has no layered counterparts in bulk, are found to be layered graphitic-like in nanoscale. Such evidences related to silicon carbide, zinc oxide and aluminum nitride. In the field of bulk materials (single crystals, composites, etc.), the main direction of theoretical material science is search for crystal structure with optimal desired properties, such as hardness, band gap, dielectric constant, etc. Using the evolutionary algorithm implemented in the software package USPEX, it became possible to predict stable compounds, their crystal structure using only data on their chemical composition. In addition, we studied the surface reconstruction of rutile-like RuO2, especially the most stable (110) surface, which is highly important for catalysis, sensing and charge storage applications.</blockquote> <div class="p"><!----></div> Chair: Dr Piotr Graczyk <div class="p"><!----></div> </li> <li> /329/ <div class="p"><!----></div> Date: Wednesday 2017.06.21 <div class="p"><!----></div> Speaker: <b>Prof. Sergey Tarapov</b> <div class="p"><!----></div> (Corresponding member of the National Academy of Sciences of Ukraine) <div class="p"><!----></div> Affiliation: Institute for Radiophysics and Electronics of the NAS of Ukraine, V. N. Karazin Kharkiv National University Kharkiv, Ukraine <div class="p"><!----></div> Title: <font color="#0000FF">Magnetic Metamaterials and Electron Magnetic Resonance at Microwaves: Experiment, Fundamental and Design</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The results of experimental study of fundamental features of magnetically controlled metamaterials at microwave band are under discussion. Among them are: (1) the transformation of right-handed medium into left-handed medium and electrodynamic analogs of Tamm states; (2) the left-handed properties (controlled negative refraction) of semiconductor ferrite composites; (3) formation of backward wave in the chiral magnetoactive medium; and (4) photonic crystals and magnetophotonic crystals. The possible technological implementations of metamaterials are described. Besides the special experimental equipment, designed for study both <em>magnetic microwave metamaterials</em> and <em>electron spin/magnetic resonance</em> in nanocomposites both at room and very low temperatures (0.3-300 K) are presented. Also the results of Electron Spin Resonance experimental research of spin dynamics in magnetic nanodots and nanostrips ensembles at T = 4.2-300K are discussed.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /328/ <div class="p"><!----></div> Date: Wednesday 2017.06.14 <div class="p"><!----></div> Speaker: <b>Prof. IF PAN dr hab. Tomasz SowiDski</b> <div class="p"><!----></div> Affiliation: Institute of Physics of the Polish Academy of Sciences, Warsaw, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Mass-imbalanced mixtures of several ultra-cold fermions in one-dimensional traps</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> With recent experiments on several particles confined in a one-dimensional optical traps quantum engineering has entered a completely new, so far unexplored, area of strongly correlated quantum systems. Apart from a few exceptions, it has commonly been assumed that particles of different kinds have the same mass and the main impact on properties of the system comes from an imbalance of the number of particles. In contrast, in my talk I will focus on the system of a few ultra-cold fermions of different masses. I will show that the mass difference between different fermionic components leads to the specific spatial fragmentation in one of the components. Although the mechanism predicted is universal with respect to the number of particles, the fragmentation occurs, depending on the shape of the confinement, for either the lighter or the heavier component. In consequence, the system may undergo a kind of critical transition that is induced by an adiabatic change of the external potential. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /327/ <div class="p"><!----></div> Date: Wednesday 2017.06.14 <div class="p"><!----></div> Speaker: <b>Dr MichaB J. MichaBowski</b> <div class="p"><!----></div> Affiliation: Obserwatorium Astronomiczne, WydziaB Fizyki, UAM <div class="p"><!----></div> Title: <font color="#0000FF">Dust in the distant Universe</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I will summarize what we have learned about dusty galaxies at large distances from Earth. The characterization of their properties is crucial to understand the evolution of the Universe, because dust absorbed and re-emitted in the infrared 50% of stellar emission ever produced in the Universe. First, I will show my effort in obtaining the largest so far (&nbsp;2000 objects) sample of galaxies selected by their infrared emission. I will discuss their redshifts, stelar masses and star formation rates. These properties provide important tests of cosmological models. Then I will show how we can learn in what way the large masses of dust in the distant Universe were produced: either by asymptotic giant branch stars, by supernovae, or by dust grain growth in the interstellar medium. The knowledge of how early galaxies could produce their dust is important from the point of view of further evolution, because dust is enabling formation of molecular gas, the fuel for star formation.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /326/ <div class="p"><!----></div> Data: Pitek, 9 czerwca 2017 <div class="p"><!----></div> Prelegent: <b>Dr Jdrzej KociDski</b> <div class="p"><!----></div> Afiliacja: ZakBad Akustyki PomieszczeD i Psychoakustyki, WF UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Testy zrozumiaBo[ci mowy jako uniwersalne narzdzie do badania zmysBu sBuchu oraz wybranych ukBadw fizycznych</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Ocena zrozumiaBo[ci mowy jest nie tylko narzdziem diagnostycznym wykorzystywanym w protetyce sBuchu, ale mo|e dostarczy wielu istotnych informacji na temat funkcjonowania ukBadu sBuchowego czBowieka, a tak|e mo|e by wykorzystana w badaniach innych procesw w centralnym ukBadzie sBuchowym. Co wicej, metody oceny zrozumiaBo[ci mowy posBu|y mog tak|e do analizy funkcjonowania ukBadw fizycznych poczwszy od aparatw sBuchowych poprzez pomieszczenia, na r|nego typu algorytmach przetwarzania sygnaBw skoDczywszy.<br /><br /> Przedstawione do oceny publikacje wskazuj na uniwersalno[ badaD wykorzystujcych zrozumiaBo[ mowy w ocenie funkcjonowania zarwno ukBadu sBuchowego, jak i centralnego ukBadu nerwowego. Co wicej prace te potwierdzaj istotno[, a wrcz konieczno[ wykorzystywania testw zrozumiaBo[ci mowy do oceny innych ukBadw, w ktrych ta zrozumiaBo[ gra istotn rol, jak np. algorytmy separujce sygnaBy, czy ptle indukcyjne wykorzystywane do poprawy zrozumiaBo[ci mowy u u|ytkownikw aparatw sBuchowych. Testy te posBu|y mog tak|e do weryfikacji obiektywnych parametrw sBu|cych jako predyktory zrozumiaBo[ci mowy (np. Speech Transmission Index, STI) lub jej poprawy (np. poprawa stosunku sygnaBu do szumu, SNR). Warto podkre[li, |e wyniki prac otrzymano stosujc najnowsze i najdokBadniejsze metody pomiaru zrozumiaBo[ci mowy wnoszc tym samym nowe dane zarwno pod wzgldem jako[ciowym, jak i pod wzgldem obszarw badawczych.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /325/ <div class="p"><!----></div> Date: Wednesday 2017.06.7 at 13:00 <div class="p"><!----></div> Speaker: <b>Prof. Oleksandr V. Dobrovolskiy</b> <div class="p"><!----></div> Affiliation: Physics Department, V. N. Karazin Kharkiv National University, Ukraine, and<br /> Physikalisches Institut, Goethe University Frankfurt am Main, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Focused electron beam-induced deposition of magnetic nanostructures</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Focused electron beam induced deposition (FEBID) is a direct-write approach for the fabrication of 2D and 3D nanostructures in various materials research areas. These comprise superconductors, magnetic materials, multilayer structures, and various sensor applications. FEBID is based on the decomposition of organo-metallic precursor gas molecules which are injected into the chamber of a scanning electron microscope. The deposition of the material takes place at those points where the electron beam dwells for a longer time in accordance with a pre-defined pattern. A post-growth processing of FEBID structures allows one to modify their compositional, structural and magnetic properties. In this talk, a general introduction to the basics of FEBID will be given, with an outline of available FEBID materials. A particular focus will be on Co-based FEBID nanostructures and tuning their magnetic properties on the lateral mesoscale by an area-selective post-growth processing. Further, exemplary 3D FEBID nanostructures will be presented and the perspectives of their use in fluxonic, photonic, and magnonic metamaterials will be outlined.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /324/ <div class="p"><!----></div> Date: Friday 2017.06.2, 11:30 <div class="p"><!----></div> Speaker: <b>Prof. Ryszard Jankowiak</b> <div class="p"><!----></div> Affiliation: Department of Chemistry and Department of Physics, Kansas State University, Manhattan, KS, USA <div class="p"><!----></div> Title: <font color="#0000FF">Excitonic structure and dynamics in various photosynthetic antenna protein complexes: hole-burning and modeling studies</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017jankowiak.pdf">[PDF]</a>&nbsp; Low temperature (high-resolution) hole-burning (HB) spectroscopy and modeling studies of various optical spectra of photosynthetic complexes provide new insight into excited state electronic structure and dynamics. The following complexes will be briefly discussed: 1) The CsmA bacteriochlorophyll &#945; complex from C. tepidum. In this case, in contrast to literature data, an alternative structure is proposed for the baseplate; 2) The FMO antenna complex from C. tepidum and its mutants. Using an experimentally determined shape for the spectral density for the lowest- energy state (J<sub>ph</sub>(&#969;)), simulated optical spectra are obtained from structure-based calculations for the FMO trimer. For higher energy pigments, the effect of a broader J<sub>ph</sub>(&#969;) shape with a different S factor and/or variable &#915;<sub>inh</sub> are also tested for comparison. I will demonstrate that in order to properly describe various low-temperature optical spectra, a downward uncorrelated excitation energy transfer (EET) between trimer subunits must to be taken into account. That is, after light induced coherences vanish within each monomer, uncorrelated EET between the lowest exciton levels of each monomer takes place due to static structural inhomogeneities in the trimer. The information gained provides new insight into disorder, excitonic structure, EET dynamics and mutation induced changes induced via site directed mutagenesis; and 3) The B800-850 LH2 antenna complex from Alc.vinosum, which exhibits an unusual spectral splitting of the B800 absorption band. Here, we propose that various protein conformations lead to either strong or weak hydrogen bonds between the protein and B800 pigments.</blockquote> <div class="p"><!----></div> <blockquote><b>Biography:</b> Ryszard Jankowiak is a Distinguished Professor of Chemistry and Ancillary Distinguished Professor of Physics at Kansas State University, Manhattan, KS, USA. He is also affiliated with the Photosynthetic Antenna Research Center, Washington University, Saint Louis, MO. He has published over 230 papers in various areas of physical chemistry, toxicology, chemical carcinogenesis, physics, and biophysics. Currently he studies photosynthetic reaction centers and various antenna pigment complexes (including mutants) of green plants/algae and photosynthetic bacteria using solid-state low-temperature (laser-based) spectroscopies and theoretical modeling. Research Gate score: 43.2; over 5,340 citations. H INDEX 39. Contact phone numbers: +(785) 532- 6785 or +(785) 410-4163. </blockquote> <div class="p"><!----></div> Chair: Prof. UAM dr hab. Krzysztof Gibasiewicz <div class="p"><!----></div> </li> <li> /323/ <div class="p"><!----></div> Date: Thursday 2017.06.01 <div class="p"><!----></div> Speaker: <b>Prof. Hendrik Ohldag</b> <div class="p"><!----></div> Affiliation: A Distinguished Lecturer of the IEEE Magnetics (2017), SLAC National Accelerator Laboratory, Menlo Park, California, USA <div class="p"><!----></div> Title: <font color="#0000FF">Ultrafast and Very Small: Discover Nanoscale Magnetism With Picosecond Time Resolution Using X-Rays</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Today s magnetic device technology is based on complex magnetic alloys or multilayers that are patterned at the nanoscale and operate at gigahertz frequencies. To better understand the behavior of such devices one needs an experimental approach that is capable of detecting magnetization with nanometer and picosecond sensitivity. In addition, since devices contain different magnetic elements, a technique is needed that provides element-specific information about not only ferromagnetic but antiferromagnetic materials as well. Synchrotron based X-ray microscopy provides exactly these capabilities because a synchrotron produces tunable and fully polarized X-rays with energies between several tens of electron volts up to tens of kiloelectron volts. The interaction of tunable X-rays with matter is element-specific, allowing us to separately address different elements in a device. The polarization dependence or dichroism of the X-ray interaction provides a path to measure a ferromagnetic moment and its orientation or determine the orientation of the spin axis in an antiferromagnet. The wavelength of X-rays is on the order of nanometers, which enables microscopy with nanometer spatial resolution. And finally, a synchrotron is a pulsed X-ray source, with a pulse length of tens of picoseconds, which enables us to study magnetization dynamics with a time resolution given by the X-ray pulse length in a pump-probe fashion. The goal of this talk is to present an introduction to the field and explain the capabilities of synchrotron based X-ray microscopy, which is becoming a tool available at every synchrotron, to a diverse audience. The general introduction will be followed by a set of examples, depending on the audience, that may include properties of magnetic materials in rocks and meteorites, magnetic inclusions in magnetic oxides, interfacial magnetism in magnetic multilayers, and dynamics of nanostructured devices due to field and current pulses and microwave excitations.</blockquote> <div class="p"><!----></div> More information at <a href="http://www.ieeemagnetics.org/index.php?option=com_content&view=article&id=263:hendrik-ohldag&catid=82:2017-distinguished-lecturers&Itemid=180">www.ieeemagnetics.org</a>&nbsp; <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /322/ <div class="p"><!----></div> Date: Wednesday 2017.05.31 at 13:00 <div class="p"><!----></div> Speaker: <b>Prof. Richard J. Spontak</b> <div class="p"><!----></div> Affiliation: Departments of Chemical </td><td width="150"> Biomolecular Engineering and Materials Science </td><td width="150"> Engineering North Carolina State University Raleigh NC 27695 <div class="p"><!----></div> Title: <font color="#0000FF">Biomimicry with Block Copolymers: Directed Self-Assembly via Crystallization or Chemical Coordination</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Spontaneous self-assembly of block copolymer (BCP) molecules in a block-selective solvent typically results in the formation of micelles possessing a classical spherical morphology. Inclusion of a crystallizable block in the copolymer promotes crystallization-driven self-assembly (CDSA), yielding anisotropic cylindrical micelles that can, after additional processing, possess a remarkably narrow length polydispersity. Anisotropic nanoparticles prepared from BCPs are of growing importance as building blocks for the creation of a wide range of synthetic hierarchical materials. However, the assembly of such structural units is generally limited to the use of amphiphilic interactions. In addition to CDSA to generate single cylindrical micelles, reversible coordination-driven hierarchical self-assembly can be used to produce micron-scale fibers and macroscopic films based on the association of low-polydispersity cylindrical BCP micelles. In this case, coordination of palladium metal centers to phosphine ligands immobilized within the soluble coronas of BCP micelles is observed to induce intermicellar crosslinking, affording stable linear fibers comprised of micelle subunits in a staggered arrangement. The mean length of the fibers can be readily varied by altering the micelle concentration, reaction stoichiometry or aspect ratio of the micelle building blocks. Furthermore, the fibers aggregate upon drying to form robust, self-supporting macroscopic micelle-based thin films with useful mechanical properties that are analogous to crosslinked polymer networks, but on a significantly longer length scale. A comparable hierarchical self-assembly strategy yields toroidal micelles that combine to form micron-scale superstructures. Addition of a crystallizable BCP to a solution of a toroid-forming BCP results in the formation of toroidal multimicelles, as well as single-layer hexagonal arrays of connected toroids. By controlling the ability of the BCPs to form hydrogen bonds through the introduction of hydroxyl groups on the crystallizable BCP and the accompanying level of solvophobic interactions, the BCPs can spontaneously self-assemble to form 3D periodic mesoporous superstructures. Studies such as these demonstrate that self-assembly of BCPs into discrete, non-spherical nanostructures can be scaled from the "ground-up" to yield materials with intriguing morphologies and potentially unique properties. </blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /321/ <div class="p"><!----></div> Data: pitek 2017.05.26 <div class="p"><!----></div> Prelegent: <b>Dr Oskar Baksalary</b> <div class="p"><!----></div> Afiliacja: Quantum Physics Division, Physics Faculty, AMU <div class="p"><!----></div> TytuB: <font color="#0000FF">Rachunek macierzowy wobec zagadnieD z zakresu fizyki - reprezentacje odwrotno[ci Moore'a-Penrose'a</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Pojcie odwrotno[ci Moore'a-Penrose'a macierzy odgrywa wa|n rol w rozmaitych dziedzinach nauki. Bodaj|e najlepiej znany przykBad jego zastosowania dotyczy metody najmniejszych kwadratw wykorzystywanej w wikszo[ci obszarw badaD naukowych odwoBujcych si do metod matematycznych. Jednak przykBady zastosowaD odwrotno[ci Moore'a-Penrose'a obejmuj tak|e inne zagadnienia, z ktrych wiele wywodzi si z fizyki. W trakcie seminarium przedstawione zostan rezultaty odnoszce si do odwrotno[ci Moore'a-Penrose'a rozmaitych funkcji macierzy ze szczeglnym naciskiem poBo|onym na alternatywne sposoby reprezentowania tego pojcia. W[rd poruszonych zagadnieD znajd si m.in.: odwrotno[ci Moore'a-Penrose'a macierzy zmodyfikowanej macierz rzdu 1, odwrotno[ core (i jej zwizki z odwrotno[ciami Moore'a-Penrose'a, Botta-Duffina i grupow), a tak|e unitarnie niezmiennicze miary rozseparowania przestrzeni wektorowych. W obrbie zainteresowania bd przy tym klasy macierzy hermitowskich, idempotentnych i EP.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /320/ <div class="p"><!----></div> Date: Thursday 2017.05.25 <div class="p"><!----></div> Speaker: <b>Dr Su-Yong Lee</b> <div class="p"><!----></div> Affiliation: School of Computational Sciences, Korea Institute for Advanced Study, Seoul, Korea <div class="p"><!----></div> Title: <font color="#0000FF">Single-photon non-locality test using feasible measurement setups</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We test non-locality of a single-particle under feasible measurements, such as on-off and homodyne detections along with displacement and squeezing operations. On-off detection exhibits the existence of intensity of light by its click event, and homodyne detection shows the information on the phase of light by measuring intensity difference. We find that a single-particle entangled state can violate the CHSH inequality up to 2.782 when all four measurements are squeezed-and-displaced on-off detections.</blockquote> <div class="p"><!----></div> Chair: Dr hab. PaweB KurzyDski <div class="p"><!----></div> </li> <li> /319/ <div class="p"><!----></div> Date: Wednesday 2017.05.17 at 13:00 <div class="p"><!----></div> Speaker: <b>Prof. dr Mustafa Serkan Soylu</b> <div class="p"><!----></div> Affiliation: Department of Physics, University of Giresun, Turkey <div class="p"><!----></div> Title: <font color="#0000FF">An example of combined experimental-theoretical characterization of metal (Nickel (II)) complex with neutral ligand</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Soylu.pdf">[PDF]</a>&nbsp; The term of computational chemistry may be defined as the mathematical description and numerical computation of molecular structures. The term computational chemistry is generally used when a mathematical method is sufficiently well developed that it can be automated for implementation on a computer. Computational chemistry has become a useful way to investigate materials that are too difficult to find or too expensive to purchase. It also helps chemists make predictions before running the actual experiments so that they can be better prepared for making observations. It s also useful ways to explain of spectroscopic results of molecular structures. The mathematical description of the molecular structures based on the Quantum mechanics rules. Because of the Quantum mechanics (QM) is the correct mathematical description of the behaviour of electrons and thus of molecular structures. In theory, QM can predict any property of an individual atom or molecule exactly. In practice, the QM equations have only been solved exactly for one electron systems. A myriad collection of methods has been developed for approximating the solution for multiple electron systems. These approximations can be very useful, but this requires an amount of sophistication on the part of the researcher to know when each approximation is valid and how accurate the results are likely to be. In my presentation, I intend to give you some information about a few examples of our work entitled  Combined experimental theoretical characterization of chelidamate nickel complex with 4-methylpyrimidine . A new chelidamate complex of nickel (II) ion was synthesized and characterized by single-crystal X-ray diffraction, UV Vis and FT-IR spectroscopy. Theoretical calculations have been carried out by using Hartree Fock (HF)/6-31G (d) and Density Functional Theory (DFT)/6-31+G (d). HOMO LUMO energies, absorption wavelengths and excitation energy were computed by time dependent DFT (TD-DFT) method with polarizable continuum model. The observed FT-IR vibrational frequencies are analysed and compared with theoretically predicted vibrational frequencies.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /318/ <div class="p"><!----></div> Data: pitek 2017.05.12, 12:00 <div class="p"><!----></div> Prelegent: <b>Dr Aleksandra Trzaskowska</b> <div class="p"><!----></div> Afiliacja: ZakBad Fizyki KrysztaBw, WF UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Dyspersja fal powierzchniowych w strukturach fononicznych badana metod wysoko rozdzielczej spektroskopii Brillouina</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Przedstawiono wyniki badania wysokorozdzielcz spektroskopi Brillouina dyspersji fal powierzchniowych w r|nego typu krysztaBach fononicznych. Powierzchniowe wBasno[ci spr|yste badanych prbek symulowano, w ka|dym przypadku, metod elementw skoDczonych (FEM). Dla jednowymiarowych krysztaBw fononicznych pokazano wpByw periodyczno[ci sieci na amplitud fal powierzchniowych. W przypadku krysztaBw dwuwymiarowych zaobserwowano istnienie przerwy energetycznej a w strukturach wyspowych wykazano tak|e istnienie modw  oddychajcych". Ciekawe wBasno[ci aplikacyjne obserwowano w przypadku zmodyfikowanej dwuwymiarowo struktury 1D.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /317/ <div class="p"><!----></div> Data: [roda 2017.05.10 at 13:00 <div class="p"><!----></div> Prelegenci: <b>Mgr Justyna Aodyga i prof. UAM dr hab. Andrzej Grudka</b> <div class="p"><!----></div> Afiliacja: Quantum Electronics Division, Physics Faculty, AMU <div class="p"><!----></div> TytuB: <font color="#0000FF">Zmarszczki czasoprzestrzeni, czyli fale grawitacyjne</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> 11 lutego 2016 roku midzynarodowy zespB naukowcw poinformowaB o pierwszym w historii zarejestrowaniu fal grawitacyjnych. Fale te zostaBy zarejestrowane w Stanach Zjednoczonych rwnocze[nie przez dwa detektory LIGO (Laser Interferometer Gravitational-wave Observatory), oddalone od siebie o ponad 3 tys. kilometrw.<br /><br /> Podczas seminarium, w elementarny sposb omwimy r|nice midzy teori grawitacji Newtona a elektrodynamik. Nastpnie przedstawimy w jaki sposb Einstein zmodyfikowaB teori Newtona i omwimy podstawowe eksperymenty potwierdzajce jego teori grawitacji. Wyja[nimy, dlaczego w teorii tej, podobnie jak w elektrodynamice, wystpuj rozwizania falowe. Na koniec omwimy wspomniany na pocztku eksperyment, w ktrym zaobserwowano fale grawitacyjne.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /316/ <div class="p"><!----></div> Data: [roda 2017.05.10, 11:00 <div class="p"><!----></div> Prelegent: <b>Dr Krzysztof Cichy</b> <div class="p"><!----></div> Afiliacja: Instytut Fizyki Teoretycznej, Uniwersytet Goethego we Frankfurcie, Niemcy<br /> oraz ZakBad Fizyki Kwantowej, WF UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Chromodynamika kwantowa na sieci z fermionami twisted mass</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Chromodynamika kwantowa (QCD) jest obowizujc teori oddziaBywania silnego. W re|imie niskoenergetycznym staBa sprz|enia QCD jest du|a i nie jest mo|liwe zastosowanie rachunku zaburzeD. Jedynym podej[ciem dajcym ilo[ciowe przewidywania z pierwszych zasad jest sformuBowanie QCD na Euklidesowej sieci czasoprzestrzennej oraz obliczenie odpowiednich caBek po trajektoriach numerycznie, u|ywajc algorytmw Monte Carlo. Seminarium to po[wicone bdzie wynikom uzyskanym przy u|yciu jednej z najwa|niejszych dyskretyzacji dziaBania fermionowego, tzw. twisted mass. Przedstawimy wnioski dotyczce nieperturbacyjnej renormalizacji, a tak|e spektralnych, chiralnych i topologicznych wBasno[ci QCD.</blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /315/ <div class="p"><!----></div> Date: Wednesday 2017.04.26 at 13:00 <div class="p"><!----></div> Speaker: <b>Dr Ravindra Chhajlany</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Control of many body features in synthetic and real materials: selected topics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Rapid and major advances in the field of ultracold gases in optical lattices as well as ultra-fast pump-probe spectroscopy in solids are allowing unprecedented control of strongly correlated quantum many body systems with light. In this talk we shall present two examples of such control. In the optical lattice setting, we describe a new system that can be implemented in current state-of-the-art experiments with two species of fermions and tuned to extreme parameter regimes. This system exhibits a combination of interesting features: hidden string order, hole superconducting correlations and non-trivial excitations. In the condensed matter settings, we outline a recent experiment demonstrating the switching of orbitally ordered domains in the prototypical manganite LSMO (La0.5Sr1.5MnO4) with non-resonant THz light and provide a simplified model description of the observed effect. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /314/ <div class="p"><!----></div> Date: Wednesday 2017.04.12, 14:00 <div class="p"><!----></div> Speaker: <b>Dr Joanna Raczkowska</b> <div class="p"><!----></div> Affiliation: WydziaB Fizyki, Astronomii i Informatyki Stosowanej, Uniwersytet JagielloDski, Krakw <div class="p"><!----></div> Title: <font color="#0000FF">Innovative polymer coatings for controlled interactions with proteins and cells<br /> (Innowacyjne pokrycia polimerowe do kontroli oddziaBywaD z biaBkami i komrkami)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2017Raczkowska.pdf">[PDF]</a>&nbsp; In recent years the growing attention is paid to a broad interdisciplinary 'bio-interface science', on the border between physics and biology, focused at the design of novel, innovative coatings enabling to use polymer materials with the controlled physicochemical properties for biomedical applications. The biocompatibility of the material and possibility of its biomedical applications is determined by its interactions with biological material, dependent on physicochemical properties of the surface, such as chemical composition, wettability, topography or elasticity. In the lecture, the idea of controlling the physicochemical properties of the substrate in the way enabling controlled interactions between the polymer coatings and the biological material will be presented. The results of performed experiments regarding the impact of substrate elasticity on the behavior of cancerous cells at different stage of cancer progression as well as the design and complex characterization of thermoresponsive, intelligent polymer coatings with controlled physicochemical properties will be reported. Conducted studies cover numerous steps, including the design and fabrication of polymer coatings with controlled properties, their complex characterization, as well as biocompatibility tests for both, proteins and cells. The obtained results enable deeper understanding of the complex interactions on the bio-interface between the surface and biological material.</blockquote> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> W ostatnich latach jednym z gBwnych kierunkw rozwoju nauk z pogranicza fizyki polimerw, biologii i medycyny jest poszukiwanie innowacyjnych rozwizaD pozwalajcych na wykorzystanie pokry polimerowych o kontrolowanych wBa[ciwo[ciach fizykochemicznych do zastosowaD biomedycznych. O mo|liwo[ciach aplikacyjnych podBo|a decyduje jego zdolno[ do oddziaBywania z materiaBem biologicznym, determinowana przez wBa[ciwo[ci powierzchni, takie jak skBad chemiczny, zwil|alno[, topografia czy elastyczno[. W referacie zostanie przedstawione zagadnienie mo|liwo[ci kontroli wBa[ciwo[ci fizykochemicznych podBo|a w celu uzyskania kontrolowanych oddziaBywaD pokry polimerowych z biaBkami i komrkami. Opisane zostan wyniki badaD dotyczcych wpBywu elastyczno[ci podBo|a na zachowanie komrek nowotworowych o r|nym stopniu zaawansowania oraz tworzenia i kompleksowej charakterystyki termoprzeBczalnych inteligentnych pokry polimerowych. Badania te obejmowaBy szereg etapw, poczynajc od zaprojektowania i wytworzenie podBo|y o zadanych wBa[ciwo[ciach, poprzez kompleksow charakterystyk ich wBa[ciwo[ci fizykochemicznych a| do testw biokompatybilno[ci, prowadzonych zarwno dla biaBek, jak i dla komrek. Otrzymane wyniki pozwalaj na gBbsze poznanie skomplikowanych oddziaBywaD zachodzcych pomidzy podBo|em a materiaBem biologicznym.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /313/ <div class="p"><!----></div> Date: Wednesday 2017.04.05, 14:00 <div class="p"><!----></div> Speaker: <b>Prof. Miroslav Holecek and mgr Milada Krejcova</b> <div class="p"><!----></div> Affiliation: Faculty of Applied Sciences, Department of Mechanics, University of West Bohemia, Pilzno <div class="p"><!----></div> Title: <font color="#0000FF">Maxwell demon, Landauer principle, and stochastic processes focused on molecular motors</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: dr hab. PrzemysBaw CheBminiak <div class="p"><!----></div> </li> <li> /312/ <div class="p"><!----></div> Date: Wednesday 2017.04.05, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Pavel Bal~</b> <div class="p"><!----></div> Affiliation: Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Prague, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Magnetic properties of Bi<sub>2</sub>Se<sub>3</sub> 3D topological insulator doped by Mn atoms: theory and numerical simulations</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Electric conductivity [1] and ferromagnetic Curie temperature of bulk Mn-doped Bi<sub>2</sub>Se<sub>3</sub> and Bi<sub>2</sub>Te<sub>3</sub> 3D topological insulators are systematically studied by means of atomistic Monte Carlo simulations. Exchange interactions between the Mn magnetic moments have been calculated using ab initio methods. Tight-binding linear muffin-tin orbital method has been employed, together with the coherent potential approximation to describe the high degree of disorder in the system. Spin-orbit interaction is included in the ground state calculation. In the studied materials Mn atoms might either replace a Bi atom (substitutional position) or fill an empty position in van Der Waals gap between the atomic layers (substitutional position). It has been shown that exchange interaction between Mn magnetic moments might lead to a ferromagnetic phase transition. The Curie temperature is shown to be significantly dependent on the concentration of Mn atoms in substitutional and interstitial positions. <div class="p"><!----></div> [1] K. Carva, J. Kudrnovsk, F. Mca, V. Drchal, I. Turek, P. Bal~, V. Tk , V. Hol, V. Sechovsk, J. Honolka, Phys. Rev. B 93, 214409 (2016).</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /311/ <div class="p"><!----></div> Date: Friday 2017.03.31 at 13:00 <div class="p"><!----></div> Speaker: <b>M.Sc. Karam Chand</b> <div class="p"><!----></div> Affiliation: University of New South Wales, Canberra Campus, Australia and Advanced Research Center, Saudi Aramco, Kingdom of Saudi Arabia. <div class="p"><!----></div> Title: <font color="#0000FF">Quantum channel capacity under realistic circumstances</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum channels can be used to transfer both classical and quantum information. The capacity of a quantum channel is defined by the upper bound of it transmission rate. The capacity improvement of a quantum channel remains an open question. In this presentation, I will discuss a systematic method to investigate quantum channel capacity in spectral domain under stringent constrained resources, particularly photons, which is then apportioned under more realistic circumstances. Here, a classical signal analysis methodology is used to match the power spectral density of the signal to the spectrum of a squeezed channel supported by a subthreshold optical parametric oscillator. Furthermore, using water-filling algorithm, I will define and declare the first time, the upper bound of the channel capacity of a quantum channel under realistic practical assumptions. Following on from that, I will establish the best signal-to-noise ratio and bit-error-rate that can be achieved for a bipolar non-return to zero digital signals imposed on the squeezed output of a sub-threshold optical parametric oscillator, for given fixed number of photons in the channel. For a range of parameters, I will establish the circumstances under which the squeezed channel can perform better than a classical channel (as supported by a coherent state). Using these techniques, I will optimize the capacity of a quantum channel for a given photon flux in the channel. This also provides the machinery needed to design experiments that would demonstrate quantum enhancement. Further discussion, if one considers mismatched parameter regime, in fact very importantly show how by increasing squeezing level decreases quantum enhancement. I will also discuss how to use these ranges of optimum parameters to design a quantum channel.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /310/ <div class="p"><!----></div> Date: Wednesday 2017.03.22, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. Adam Sawicki</b> <div class="p"><!----></div> Authors: Adam Sawicki and Katarzyna Karnas <div class="p"><!----></div> Affiliation: Center for Theoretical Physics of the Polish Academy of Sciences, Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Universal quantum gates</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I will consider the problem of deciding if a finite set of quantum one-qudit gates is universal, i.e if the generated group is either the special unitary or the special orthogonal group. To every gate I will assign its image under the adjoint representation. The necessary condition for the universality is that the only matrices that commute with all the adjoint representation matrices are proportional to the identity. If in addition there is an element in the considered group whose Hilbert-Schmidt distance from the centre is smaller than 1/&#8730;2, then the set of gates is universal. Using these I will present a simple algorithm that allows deciding the universality of any set of d-dimensional gates in a finite number of steps. Moreover, I will formulate the general classification theorem. This is a joint work with Katarzyna Karnas.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM dr hab. Andrzej Grudka <div class="p"><!----></div> </li> <li> /309/ <div class="p"><!----></div> Data: Zroda 2017.03.22, 10:00 <div class="p"><!----></div> Prelegent: <b>Mgr PrzemysBaw Sadowski</b> <div class="p"><!----></div> Afiliacja: Instytut Informatyki Teoretycznej i Stosowanej PAN w Gliwicach <div class="p"><!----></div> TytuB: <font color="#0000FF">Kwantowe wyszukiwanie z dodatkow wiedz o sieci</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Prezentowana praca jest po[wicona analizie modelu bBdzenia kwantowego wzbogaconego o mo|liwo[ definiowania r|nych rodzai krawdzi. Poszczeglne rodzaje krawdzi definiowane s poprzez zr|nicowanie zmiany fazy nastpujcej podczas przej[cia dan [cie|k. Prezentujemy metody pozwalajce lokalnie bada wBasno[ci sieci oparte na rodzajach wystpujcych krawdzi oraz sterowa zachowaniem bBdzenia w zale|no[ci od tych wBasno[ci. W szczeglno[ci rozwa|amy problem przeszukiwania w przypadku gdy rodzaj krawdzi okre[la czy dany kierunek mo|e prowadzi do szukanego wierzchoBka.</blockquote> <div class="p"><!----></div> Prowadzcy: Dr hab. PaweB KurzyDski <div class="p"><!----></div> </li> <li> /308/ <div class="p"><!----></div> Data: [roda 2017.03.15, 12:00 <div class="p"><!----></div> Prelegent: <b>Dr MikoBaj Pochylski</b> <div class="p"><!----></div> Afiliacja: ZakBad Biofizyki Molekularnej, WydziaB Fizyki, UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Historia postpu w badaniach zjawiska rozpraszania Brillouina</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Przewidziane blisko 100 lat, temu zjawisko rozpraszania Brillouina pozwoliBo na poBczenie dwch wwczas niezale|nych gaBzi fizyki: termodynamik i optyk. Od tego czasu, systematyczny rozwj technik pomiarowych zamieniB ciekaw koncepcj fizyczn w peBni rozwinit metod spektroskopow wykorzystywan w badaniach spontanicznych wzbudzeD akustycznych w materii skondensowanej.<br /><br />Podczas wystpienia przedstawiona zostanie droga jak przebyBa metoda spektroskopii Brillouina, zaczynajc od wyja[nienia fizycznych podstaw zjawiska, ktre doprowadziBy do jego teoretycznego przewidzenia. Zaprezentowany zostanie rozwj w konstrukcji wysoko-rozdzielczych spektrometrw optycznych, poczwszy od pierwszych ukBadw u|ytych do do[wiadczalnego potwierdzenia zjawiska rozpraszania Brillouina, a| po wspBczesne instrumenty wykorzystywane w fizykochemicznych badaniach materii skondensowanej. Omwiona zostanie rwnie| najnowsza konstrukcja spektrometru brillouinowskiego, dziki ktrej mo|liwy staB si szybki, bezkontaktowy i bezinwazyjny pomiar wBa[ciwo[ci mechanicznych materii mikkiej, znajdujcy zastosowanie w zagadnieniach biomedycznych. </blockquote> <div class="p"><!----></div> Prowadzcy: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /307/ <div class="p"><!----></div> Date: Friday 2017.03.10, 10.00 <div class="p"><!----></div> Speaker: <b>Prof. Michael Farle</b> <div class="p"><!----></div> Affiliation: A Distinguished Lecturer of the IEEE Magnetics (2017), University of Duisburg-Essen, Germany, and Immanuel Kant Baltic Federal University, Russia <div class="p"><!----></div> Title: <font color="#0000FF">Functionalized Hybrid Nanomagnets: New Materials for Innovations in Energy Storage and Medical Theranostics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Imagine a future in which food is used to activate specific immune reactions in a human body based on an external noninvasive magnetic stimulus. Dream of a material that stores and releases energy reversibly by temperature changes between day and night. These visions may be realized by using magnetic nanoparticles that are functionalized to be biocompatible, environmentally stable and recyclable, self-healing, and low-cost.<br /><br />In this presentation I will discuss the basic concepts of magnetic nanomaterials and their magnetic properties with a focus on how to tune specific parameters in a controlled fashion to achieve the dreams of the future. I will highlight state-of-the-art experimental technologies that allow us to understand microscopic properties and interactions in relation to electronic structure changes caused by changes in size, shape, and composition of nanomaterials. Then I will discuss how this understanding is used when nanomagnets are functionalized for targeted drug delivery or composed to form macroscopic materials for new energetic applications like magnetic refrigeration. I will demonstrate that the seemingly complex behavior of hybrid metal/metal, metal/oxide, or oxide/oxide interface materials can be understood from the three fundamental interactions in magnetism: magnetic exchange interaction due to orbital overlap, spin-orbit interaction due to inner- and intra-atomic relativistic corrections (e.g., crystal field effects) and the long-range magnetic dipolar interaction. Several examples will be presented, including the formation of above-room-temperature ferromagnetic interface layers between low-temperature antiferromagnetic layers and the evolution of lattices of magnetic textures (skyrmions) in confined dimensions. The talk will end with an episode in the life of an imaginary golf-playing couple in the year 2040 who use their  Smart Magnet (SMAG) phone to energize and heal their bodies on the green.</blockquote> <div class="p"><!----></div> <blockquote><b>Biography:</b> Michael Farle received his Diploma in experimental physics, Doctorate, and Habilitation degrees from Freie Universitt Berlin in 1984, 1989, and 1998, respectively. During this time he spent three and a half years as a senior researcher at Stanford University, California, and Universit de Strasbourg, France. In 1999, he moved to Technische Universitt Braunschweig, Germany, where he became a full professor. Since 2002, he has been working as a professor at the Universitt Duisburg-Essen, Germany, where he has served as Vice-Rector for Research and Junior Scientific Staff. In 2016 he became, in addition, an adjunct professor at Immanuel Kant Baltic Federal University, Kaliningrad, Russia. Prof. Farle has published over 220 technical articles in peer-reviewed journals, including book chapters and review articles, and has given more than 60 invited presentations. He coordinated two European Research Networks and served as the vice-spokesman of Collaborative Research Center: Magnetic Heterostructures (SFB 491). Since 2014 he is chairman of the Magnetism Section of the German Physical Society. For many years he has been active on the program committees of several international conferences on magnetism. He is a member of the IEEE Magnetics Society, the German Physical Society, and is a co-editor of Materials Research Letters and Journal of Magnetism and Magnetic Materials. <a href="http://www.ieeemagnetics.org/index.php?option=com_content&view=article&id=261:michael-farle&catid=82:2017-distinguished-lecturers&Itemid=180">source: [IEEE Magnetics Society about the 2017 Distinguished Lecturer]</a>&nbsp;</blockquote> <div class="p"><!----></div> Chair: MK <div class="p"><!----></div> </li> <li> /306/ <div class="p"><!----></div> Data: [roda 2017.03.01, 12:00 <div class="p"><!----></div> Prelegenci: <b>Mgr Filip Berski i Prof. UAM dr hab. Piotr DybczyDski</b> <div class="p"><!----></div> Afiliacja: Obserwatorium Astronomiczne, WydziaB Fizyki, UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Bliskie przej[cia gwiazd koBo SBoDca w [wietle pierwszych wynikw misji Gaia</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Od roku 1950 kiedy to Jan H. Oort sformuBowaB swoj hipotez o sferycznym rezerwuarze komet otaczajcym UkBad SBoneczny trwaj badania nad bliskimi przej[ciami gwiazdowymi. Oort sugerowaB, |e takie zbli|enia s jedynym zrdBem komet dBugookresowych (LPC's)  dzi[ wiemy, |e dziaBaj rwnie| inne mechanizmy. Jednak czsto[ wystpowania bliskich przej[ gwiazdowych jest wci| tematem dyskusji. Wynika to midzy innymi z faktu, |e do niedawna badania gwiazd zbli|ajcych si do SBoDca w gBwnej mierze opieraBy si na danych zgromadzonych przez sond Hipparcos w pierwszej poBowie lat 90. ubiegBego wieku, na podstawie ktrych powstaB katalog zawierajcy wszystkie parametry astrometryczne dla okoBo 120 000. We wrze[niu ubiegBego roku zostaB opublikowany pierwszy katalog oparty o dane zgromadzone przez sond Gaia z pierwszych 14 miesicy jej dziaBania. Katalog ten zawiera niezbdne informacje dla ponad dwch milionw gwiazd. Jednym z pierwszych wynikw uzyskanych dziki temu katalogowi jest udokBadnienie parametrw przej[cia gwiazdy Gliese 710, ktra po tej korekcie przejdzie nie 60 tys. AU od SBoDca jak to wynikaBo z wcze[niejszych badaD a tylko okoBo 13 tys. AU. Tak bliskie przej[cie gwiazdy spowoduje du|e perturbacje w ObBoku Oort'a czego skutkiem mo|e by nawet dziesi nowych komet rocznie pochodzcych z tej odlegBej cz[ci UkBadu SBonecznego.</blockquote> <div class="p"><!----></div> Przewodniczca seminarium: Prof. UAM dr hab. Agnieszka KryszczyDska <div class="p"><!----></div> </li> <li> /305/ <div class="p"><!----></div> Date: Wednesday 2017.02.22, 12:00 <div class="p"><!----></div> Speakers: <b>Dr MichaB Oszmaniec</b> <div class="p"><!----></div> Affiliation: Acin's Group at the Institute of Photonic Sciences (ICFO) in Barcelona <div class="p"><!----></div> Title: <font color="#0000FF">Universal extensions of restricted classes of quantum operations</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> For numerous applications of quantum theory it is desirable to be able to apply arbitrary unitary operations on a given quantum system. However, in particular situations only a subset of unitary operations is easily accessible. This provokes the question of what additional unitary gates should be added to a given gate set in order to attain physical universality, i.e., to be able to perform arbitrary unitary transformation on the relevant Hilbert space. In this work, we study this problem for three paradigmatic cases of naturally occurring restricted gate sets: (A) particle-number preserving bosonic linear optics, (B) particle-number preserving fermionic linear optics, and (C) general (not necessarily particle-number preserving) fermionic linear optics. Tools from group theory and control theory allow to classify, in each of these scenarios, what sets of gates are generated, if an additional gate is added to the set of allowed transformations. This solves the universality problem completely for arbitrary number of particles and for arbitrary dimensions of the single-particle Hilbert space. <br /> After the presentation of these results, I will show they can be useful in the context of quantum metrology [1] and for the model of quantum computation based on fermionic linear optics [2,3].<br /> This talk is based on a joint project with Zoltan Zimboras (Freie Universitat Berlin).<br /> <div class="p"><!----></div> [1] M. Oszmaniec, R. Augusiak, C. Gogolin, J. KoBodyDski, A. Acn, and M. Lewenstein, Phys. Rev. X 6, 041044 (2016)<br /> [2] Sergey Bravyi, Phys. Rev. A 73, 042313 (2006)<br /> [3] Fernando de Melo, Piotr wikliDski, Barbara M. Terhal, New J. Phys. 15 013015 (2013)</blockquote> <div class="p"><!----></div> Chair: Dr hab. PaweB KurzyDski <div class="p"><!----></div> </li> <li> /304/ <div class="p"><!----></div> Data: pitek 2017.01.27, 12:00 <div class="p"><!----></div> Prelegenci: <b>Dr PrzemysBaw Bartczak and M.Sc. Grzegorz DudziDski</b> <div class="p"><!----></div> Afiliacja: Obserwatorium Astronomiczne, WydziaB Fizyki, UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Rekonstrukcja ksztaBtw planetoid z obserwacji radarowych</font> <div class="p"><!----></div> <div class="p"><!----></div> Przewodniczca seminarium: Prof. Agnieszka KryszczyDska <div class="p"><!----></div> </li> <li> /303/ <div class="p"><!----></div> Date: Wednesday 2017.01.25, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. MichaB Banaszak</b> <div class="p"><!----></div> Affiliation: High Pressure Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Artificial molecular machines revisited</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The development and fabrication of mechanical devices powered by artificial molecular machines is one of the contemporary goals of nanoscience. Before this goal can be realized, however, we must learn how to control the coupling/uncoupling to the environment of individual switchable molecules, and also how to integrate these bistable molecules into organized, hierarchical assemblies that can perform significant work on their immediate environment at nano-, micro- and macroscopic levels. In this lecture we review some ideas for which the Nobel Prize in Chemistry was awarded in 2016.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /302/ <div class="p"><!----></div> Date: Wednesday 2017.01.18, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Piotr Tomczak</b> <div class="p"><!----></div> Affiliation: Quantum Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Kosterlitz-Thouless transition in 1D Heisenberg antiferromagnet: An evidence based on topological properties of the ground state</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> A Kosterlitz-Thouless phase transition in the ground state of an antiferromagnetic spin-1/2 Heisenberg chain with nearest and next-nearest neighbor interactions is re-investigated from a new perspective: A mapping of the components of the scalar product onto loops is found. One can classify these loops according to whether any two of them can be transformed into each other in a continuous way (i.e., whether they have the same winding number). A finite size scaling of the fidelity susceptibility and geometrical phase calculated in the ground state of the considered system within each class of above mentioned loops leads to the critical value of coupling constant and critical exponents with high accuracy. </blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /301/ <div class="p"><!----></div> Date: Friday 2017.01.13, 11:00 <div class="p"><!----></div> Speaker: <b>Prof. Tadeusz DomaDski</b> <div class="p"><!----></div> Affiliation: Condensed Matter Theory Department, Marie Curie-Sklodowska University, Lublin <div class="p"><!----></div> Title: <font color="#0000FF">Majorana quasiparticles in nanoscopic superconductors</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Recently there has been enormous interest in studying the Majorana fermions (identical with their own antiparticles) that can emerge as the effective quasiparticles in topological superconductors. They are appealing for the basic science and their non-Abelian character makes them promising for a brand new Majorana spintronics. So far the most convincing evidence for such exotic Majorana quasiparticles has been provided by tunneling measurements using, the Rashba chains brought in a contact with the s-wave superconducting samples (such as Pb). Independent experiments by groups in Delft, Princeton, Basel and Berlin have clearly indicated enhancement of the zero-bias STM conductance. Further efforts for detecting the Majorana fermions rely on novel methods, e.g. selective equal-spin Andreev reflection (SESAR), Josephson spectroscopy, fractional quantum interference etc. I shall describe main theoretical concepts beyond the Majorana-type quasiparticles, which can be regarded as mutations of the Shiba states of spinfull impurities in bulk superconductors. Next, I will illustrate non-local nature of such quasiparticles, discuss their fractionality (in comparison to ordinary electrons) and prove that they are not completely immune to disorder (despite a wide-spread belief). I will also comment on novel projects, related to localization of Majorana quasiparticles on interfaces or quantum defects.</blockquote> <div class="p"><!----></div> Chair: Prof. Ireneusz Weymann <div class="p"><!----></div> </li> <li> /300/ <div class="p"><!----></div> Date: Wednesday 2017.01.11, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Jan Martinek</b> <div class="p"><!----></div> Affiliation: Institute of Molecular Physics, Polish Academy of Sciences, Poznan <div class="p"><!----></div> Title: <font color="#0000FF">Topological phase transitions and topological phases of matter  Nobel in Physics 2016</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. Antoni Wjcik <div class="p"><!----></div> </li> <li> /299/ <div class="p"><!----></div> Date: Wednesday 2017.01.04, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Zbigniew Ficek</b> <div class="p"><!----></div> Title: <font color="#0000FF">Beating the limit of Quantum Fluctuations</font> <div class="p"><!----></div> Affiliation: National Centre for Applied Physics, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia <div class="p"><!----></div> <blockquote><b>Abstract:</b> All systems fluctuate and according to quantum physics fluctuations persist even if all sources of error have been eliminated. The fluctuations limit the sensitivity achieved by detectors for spectral resolution and hence they limit the accuracy to which measurements can be performed. Quantum physics imposes a limit on the fluctuations called the quantum limit of fluctuations. Fluctuations of all systems including light are subject to this limit, and it was long believed that this limit could not be suppressed. In the 1980s theoretical studies followed by experimental measurements showed that the quantum limit can be beaten using quantum technologies that employ quantum effects such as quantum interference, squeezing, and entanglement. In this talk I will review the efforts done by researchers in the field of quantum optics to search for methods to reduce or even completely suppress the undesirable effects resulting from the presence of quantum fluctuations. The talk is based on the content of a book, Z. Ficek and R. Tana[, <em>Quantum-Limit Spectroscopy</em>, published by Springer in November 2016. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /298/ <div class="p"><!----></div> Date: Wednesday 2016.12.21, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. R. Wojciechowski<sup>*</sup>, Dr hab. M. Wiesner<sup>#</sup>, Prof. A. Lehmann-Szweykowska<sup>*</sup>, and Prof. MichaB KurzyDski<sup>*</sup></b> <div class="p"><!----></div> Affiliation: <sup>*</sup>Solid State Theory Division and <sup>#</sup>Crystals Physics Division, Faculty of Physics, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Spontaneous and strain-mediated commensurate-incommensurate phase transformations in LiCsSO<sub>4</sub> and similar materials</font> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /297/ <div class="p"><!----></div> Date: Wednesday 2016.12.14, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Oksana Gorobets</b> <div class="p"><!----></div> Affiliation: National Technical University of Ukraine  KPI Kiev, Ukraine <div class="p"><!----></div> Title: <font color="#0000FF">Nonlinear solutions of the Landau-Lifshitz equations in antiferromagnetic materials</font> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /296/ <div class="p"><!----></div> Date: Friday 2016.12.09, 11:30 <div class="p"><!----></div> Speaker: <b>Prof. Teruo Ono</b> <div class="p"><!----></div> Affiliation: A Distinguished Lecturer of the IEEE Magnetics (2016), Kyoto University, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Spin Dynamics in Inhomogeneously Magnetized Systems</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Worldwide efforts are underway to create revolutionary and energy-efficient data storage technology such as magnetic random-access memory (MRAM). An understanding of spin dynamics in inhomogeneously magnetized systems is indispensable for further development of nanoscale magnetic memory. This lecture provides a clear picture of inhomogeneously magnetized systems, such as magnetic nanowires with domain walls and disks with magnetic vortices, and presents not only technological developments and key achievements but also the unsolved puzzles and challenges that stimulate researchers in the field. First, the basic concept of an inhomogeneously magnetized system is described by introducing a magnetic vortex structure in a magnetic disk. A magnetic domain wall in a magnetic nanowire is also provided as a typical example. The magnetic field-driven dynamics of these inhomogeneously magnetized systems are described to illustrate their uniqueness. Second, electric-current-induced dynamics of magnetic vortices and domain walls are described. One can flip the core magnetization in a magnetic vortex using electrical current excitation, and move a domain wall by current injection into a wire. The next part focuses on the applications of current-induced magnetization dynamics in devices. The basic operations of two kinds of magnetic memories magnetic vortex core memory and magnetic domain wall memory are demonstrated. The lecture describes not only the current understanding about inhomogeneously magnetized systems, but also unexpected features that have emerged. It concludes with prospects for future developments.<br /><br /> <b>Biography:</b> Teruo Ono received the B.S., M.S., and D.Sc. degrees from Kyoto University in 1991, 1993, and 1996, respectively. After a one year stay as a postdoctoral associate at Kyoto University, he moved to Keio University where he became an assistant professor. In 2000, he moved to Osaka University where he became a lecturer and an associate professor. Since 2004, he has been working at Kyoto University, where he is now a professor. He has published over 280 technical articles in peer-reviewed journals, including book chapters and review articles, and has given more than 90 invited presentations at international conferences. He served as conference co-chair of the 8th International Symposium on Metallic Multilayers (MML) in 2013, and on the program committees of various international conferences on magnetism and spintronics. He is a member of the IEEE Magnetics Society and is an editor of the Japanese Journal of Applied Physics. <a href="http://www.ieeemagnetics.org/index.php\?option=com_content\&view=article\&id=250:-teruo-ono&catid=80:2016-distinguished-lecturers-\&Itemid=172">source: [www.ieeemagnetics.org]</a>&nbsp; </blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /295/ <div class="p"><!----></div> Date: Wednesday 2016.11.16 at 13:30 <div class="p"><!----></div> Speaker: <b>Prof. Sylwester Porowski</b> <div class="p"><!----></div> Affiliation: Instytut Wysokich Ci[nieD PAN w Warszawie <div class="p"><!----></div> Title: <font color="#0000FF">Azotek galu GaN - od krysztaBw do struktur kwantowych</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> W prognozach gBwnych trendw rozwoju technologicznego i cywilizacyjnego w XXI wieku przewiduje si, |e azotek galu (GaN), ktry jest stosunkowo nowym pBprzewodnikiem, mo|e odegra rol porwnywaln z t, jak odegraB krzem w drugiej poBowie XX wieku i bez ktrego trudno by byBo wyobrazi sobie obecnie funkcjonowanie [wiata. Nagroda Nobla z fizyki w 2014 r. dla I. Akasaki, H. Amano i S. Nakamury za skonstruowanie z GaN wydajnej diody emitujcej [wiatBo niebieskie (blue LED) potwierdza trafno[ tych trendw. Wynalazek Noblistw pozwoliB na dramatyczne zwikszenie efektywno[ci zamiany energii elektrycznej na [wiatBo, co wedBug szacunkw amerykaDskiego Departamentu Energii ju| w 2030 doprowadzi do zmniejszenia zu|ycia energii na o[wietlenie w USA prawie o poBow. Na [wiecie badania azotku galu rozwijaj si niezwykle dynamicznie i wiadomo ju|, |e rewolucja w o[wietleniu spowodowana wynalazkiem Noblistw jest dopiero pocztkiem przyszBych zastosowaD tego pBprzewodnika. Dlaczego jednak sukces tego pBprzewodnika przyszedB tak pzno? Ktre z jego wBasno[ci o tym zadecydowaBy? Czy jest podobny do innych pBprzewodnikw A<sup>III</sup>B<sup>V</sup>, czy te| jest w nim jaka[ tajemnica, ktra przez ponad 40 lat byBa barier w praktycznym jego wykorzystaniu? Jakie to byBy bariery i jak zostaBy przeBamane? W Polsce badania w tych dziedzinach rozwijaj si bardzo intensywnie. Badania naukowe w zakresie fizyki i technologii tego stosunkowo nowego pBprzewodnika s ju| obecnie prowadzone w 11 instytucjach naukowych. PowstaBy dwie firmy Ammono S. A. i TopGaN Sp. z o.o. prowadzce produkcj do[wiadczaln monokrystalicznych podBo|y GaN oraz laserw niebieskich. Polska nale|y do elitarnej grupy krajw posiadajcych kompletn technologi produkcji niebieskich laserw (Japonia, Niemcy, USA, Polska). W prezentacji omwione zostan niektre wyniki polskich badaD w dziedzinie w dziedzinie GaN oraz szanse na ich praktyczne wykorzystanie.</blockquote> <div class="p"><!----></div> Chair: MK <div class="p"><!----></div> </li> <li> /294/ <div class="p"><!----></div> Date: Wednesday 2016.11.09, 12:00 <div class="p"><!----></div> Speaker: <b>Dr MichaB KrupiDski</b> <div class="p"><!----></div> Affiliation: The H. Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Department of Materials Science, Krakw <div class="p"><!----></div> Title: <font color="#0000FF">Large Area Antidot and Dot Arrays with Perpendicular Magnetic Anisotropy</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Recently, there has been growing interest in the fabrication, characterization, and modeling of patterned magnetic thin films due to their potential applications in the field of magnetic storage, sensors, radio frequency components, information processing, and magnonic crystals. This specific interest is primarily due to the possibility of controlling the magnetic properties by introducing in ferromagnetic material artificial defects such as antidots, dots or nonmagnetic inclusions arranged in ordered or disordered arrays. In particular, the hysteresis properties of such systems can be easily tailored by shape, size, and distance between the nanostructures as well as by arrays order and their symmetry. The talk will focus on the magnetic properties and switching behavior of well-ordered magnetic antidot and dot arrays consisting of Co/Pd thin films. The patterning effect as well as the influence of period and size on domain shape and domain wall behaviour will be discussed. Magnetic transition from antidot to dot regime will be also analysed. </blockquote> <div class="p"><!----></div> Chair: dr hab. JarosBaw KBos <div class="p"><!----></div> </li> <li> /293/ <div class="p"><!----></div> Date: Tuesday 2016.11.08, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Ra anan I. Tobey</b> <div class="p"><!----></div> Affiliation: Zernike Institute for Advanced Materials, University of Groningen, Netherlands <div class="p"><!----></div> Title: <font color="#0000FF">Transient Grating Spectroscopy in Magnetic Thin Films: Magnetoelastic Transients, Spin Wave Generation and Interference, and Driven Nonlinear Phenomena</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Control of material properties is one of the driving forces in ultrafast optical sciences. The notion that light can influence intrinsic material parameters is founded on a wide range of experiments demonstrating optomagnetic control, light induced superconductivity, and the photo induced insulator to metal transition in a wide range of materials. A recent addition to the tool chest of control methodologies is the excitation of acoustic waves, and their affect on intrinsic materials properties; particularly the material magnetization via magnetostrictive effects. In this talk I will describe our recent efforts [1,2] to optically generate in-plane magnetoelastic waves in the test material nickel. Using a combination of the transient grating (TG) and Faraday techniques, we probe the magnetic dynamics of the intrinsically acoustic excitations. The dispersion characteristics of our excitations can be uniquely identified as arising from in-plane Rayleigh and longitudinal acoustic excitations while at particular values of applied external magnetic field, the acoustic excitation coherently couples to a k-vector tunable ferromagnetic resonance in the film. I will balance the talk between discussion of the experimental apparatus and its benefits as well as discussing the array of elastically actuated FMR, dipole-exchange spin waves, and nonlinearities that arise. I will also discuss open questions and potential collaborative work.<br /><br /> [1] J. Janusonis et al., APL 106, 181601 (2015). <br /> [2] J. Janusonis et al., arXiv:1601.04350 (2016).</blockquote> <div class="p"><!----></div> Chair: dr hab. JarosBaw KBos <div class="p"><!----></div> </li> <li> /292/ <div class="p"><!----></div> Date: Friday 2016.11.04, 12:00 <div class="p"><!----></div> Speaker: <b>Mgr in|. Aukasz Pawela</b> <div class="p"><!----></div> Affiliation: Institute of Theoretical and Applied Informatics, Polish Academy of Sciences <div class="p"><!----></div> Title: <font color="#0000FF">Asymptotic distances of random quantum states and random quantum channels</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Properties of random mixed states of dimension N distributed uniformly with respect to the Hilbert-Schmidt measure are investigated. We show that for large N, due to the concentration of measure, the trace distance between two random states tends to a fixed number <span class="overacc1">~</span>D=1/4+1/&#960;, which yields the Helstrom bound on their distinguishability. To arrive at this result we apply free random calculus and derive the symmetrized Marchenko-Pastur distribution, which is shown to describe numerical data for the model of coupled quantum kicked tops. Asymptotic value for the root fidelity between two random states, &#8730;F=3/4, can serve as a universal reference value for further theoretical and experimental studies. Analogous results for quantum relative entropy and Chernoff quantity provide other bounds on the distinguishablity of both states in a multiple measurement setup due to the quantum Sanov theorem. We study also mean entropy of coherence of random pure and mixed states and entanglement of a generic mixed state of a bi-partite system. For quantum channels, we show that their level density is also described by the Marchenko-Pastur distribution. This allows us to deduce some properties of the diamond norm of large dimensional quantum channels. </blockquote> <div class="p"><!----></div> Chair: Prof. UAM dr hab. Andrzej Grudka <div class="p"><!----></div> </li> <li> /291/ <div class="p"><!----></div> Date: Wednesday 2016.10.26, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. Katarzyna M. Reko</b> <div class="p"><!----></div> Affiliation: Faculty of Physics, University of BiaBystok <div class="p"><!----></div> Title: <font color="#0000FF">Magnetic structure and basic interactions of MFe<sub>4</sub>Al<sub>8</sub> (M=Sc and U)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Physics of transition metals and physics of f-electron elements belong to permanently fascinating subject. The experimental and theoretical research groups are interested in the mechanisms of fundamental interactions between atoms, leading to the formation of a specific crystal structures, the conditions for the formation of magnetic moments in metals and basic interactions between magnetic moments in the conditions of metallic bonds. The importance of the symmetry as well as the nature of the magnetic interactions between even distant partners are discussed and illustrated by selected systems. The correlation between the alloy s composition and their degree of order are taken into consideration. The aim of the research presented here was to uncover the specific mechanisms leading to frequently noncolinear and incommensurate magnetic ordering of the alloys based on metals with the typical weakly localized magnetic moments, i.e. the elements of so-called 3d block coupled through band electrons as for example in light Actinides  5f. During the search of the mechanisms responsible for long-range magnetic ordering of intermetallic systems based on simple p and d electron metals, in which, after all there is no dominance of effects such as magnetocrystalline anisotropy, the main attention was devoted to the aspects of symmetry of periodic commensurate crystal structures as well as commensurate and incommensurate magnetic ones. For the sake of clarity, a brief overview of known mechanisms of direct, indirect and super- exchange interactions of the Fe atoms, which have in the neighborhood p, d or f electrons is given together with the general review of elementary sources of anisotropy due to the components of the measured compounds. All of the presented papers concern the results of experiments performed with the use of non-polarized neutron beams in the scenario of elastic and coherent scattering. Analysis of data collected for high symmetry directions allow determination of the details of magnetic interactions of exchange constants derived within the Weiss' molecular field theory approximation of the crystal field or in the tensor resulting from a search of the exchange constants by Monte Carlo methods. Recent papers in this vein are trying to adopt the simplest models, namely the crystal field model in the conditions of the low recognition of the input anisotropy parameters of the commensurate UFe<sub>4</sub>Al<sub>8</sub> and the distribution of magnetization in an incommensurate ScFe<sub>4</sub>Al<sub>8</sub>.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /290/ <div class="p"><!----></div> Date: Thursday 2016.10.20 <div class="p"><!----></div> Speaker: <b>Doc. Jan Soubusta</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Study of nonlinear magneto-optical effects</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Nonlinear crystals are typically used when interaction of different colors of light is requested. In classical optics these nonlinear phenomena are used for second-harmonic generation, sum-frequency generation, optical parametric amplification or many other effects. In quantum optics, dealing with optical interaction on the level of individual photons, the most prominent process is spontaneous parametric down-conversion (SPDC). Influence of magnetic field on these nonlinear processes was not thoroughly tested yet. This topic deserves intensive study both from theoretical and experimental point of view, because the magnetic field can decrease the symmetry of the nonlinear crystal and so it may allow to use new types of phase-matching conditions. We started to test the SPDC process in BBO crystals. BBO is a trigonal (3m) negative uniaxial material. Nonlinear magneto-optic tensor of this material is not known and we can hardly predict it. According to our first theoretical derivation the efficiency of the nonlinear processes has to oscillate when rotating the magnetic-field orientation. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /289/ <div class="p"><!----></div> Date: Thursday 2016.10.20 <div class="p"><!----></div> Speaker: <b>Dr Antonn ernoch</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Construction of highly versatile four-photon source</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We have constructed a four-photon source for quantum information processing experiments. In comparison to others implementation our source generates two different photon pairs - entangled, separable or completely mixed in polarisation.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /288/ <div class="p"><!----></div> Date: Thursday 2016.10.20 <div class="p"><!----></div> Speaker: <b>Dr Karel Lemr</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Experimental measurement of the collectibility of two-qubit states</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk will discuss the measurement of collectibility entanglement witness on several two-qubit states. I will present our experimental setup, the measurement procedure and then compare obtained data with theoretical prediction. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /287/ <div class="p"><!----></div> Date: Wednesday 2016.10.19, 12:00 <div class="p"><!----></div> Speakers: <b>Prof. MichaB KurzyDski &amp; Dr PrzemysBaw CheBminiak</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">The very laws of dynamics do not determine organization of physical systems. What is information?</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Self-organization in thermodynamics and quantum as well as classical mechanics is the result of spontaneous symmetry (ergodicity) breaking, i.e., a random choice in the past. Under specially tuned conditions, when the system reaches a critical dynamics, self-organization becomes hierarchical. The very self-organized criticality is possible only in open systems. We tested the hypothesis that the conformational transition networks of the natively disordered proteins have a self-organized critical structure. Using a formalism of the generalized fluctuation theorem, we shown that the biological molecular machines with such dynamics transduce not only energy but also organization, defined by the suitable physical variable. Like work and heat are changes in energy, information and entropy production/reduction are changes in this variable.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /286/ <div class="p"><!----></div> Date: Friday 2016.10.14, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. JarosBaw S. KBos</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki Komputerowej, WF UAM <div class="p"><!----></div> Title: <font color="#0000FF">Symulacje komputerowe dendrymerw neutralnych i naBadowanych</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Dendrymery s polimerami zbudowanymi z BaDcuchw liniowych (spejserw) poBczonych sukcesywnie, generacja po generacji, w regularn, hierarchiczn struktur drzewiast. W zale|no[ci od panujcych w roztworze warunkw makroczsteczki te s neutralne bdz uzyskuj Badunek elektryczny. Ze wzgldu na specyficzn, rozgaBzion architektur szkieletu molekularnego dendrymerw, oddziaBywania objto[ci wykluczonej i elektrostatyczne maj du|y wpByw na ich wBasno[ci konformacyjne. Na seminarium zostan przedstawione wyniki badaD nad pojedynczymi, neutralnymi i naBadowanymi dendrymerami z gitkimi spejserami, ktre przeprowadzono za pomoc gruboziarnistych symulacji komputerowych metod Monte Carlo. Symulacje te pozwoliBy na analiz rozmiaru i struktury wewntrznej dendrymerw w szerokim zakresie liczby generacji i dBugo[ci spejserw. Dla dendrymerw obdarzonych Badunkiem wykonane obliczenia umo|liwiBy obserwacj i jako[ciowy opis efektu ich  puchnicia w warunkach neutralnego i niskiego pH.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /285/ <div class="p"><!----></div> Date: Friday 2016.10.14, 10:00 <div class="p"><!----></div> Speaker: <b>Dr hab. Arkadiusz Jzefczak</b> <div class="p"><!----></div> Affiliation: ZakBad Akustyki Molekularnej, Instytut Akustyki, WF UAM <div class="p"><!----></div> Title: <font color="#0000FF">Magnetic nanoparticles for enhancing the effectiveness of ultrasonic hyperthermia</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Ultrasonic hyperthermia is a method of cancer treatment in which tumors are exposed to an elevated cytotoxic temperature using ultrasound (US). In conventional ultrasonic hyperthermia, the ultrasound-induced heating in the tumor is achieved through the absorption of wave energy. However, to obtain appropriate temperature in reasonable time, high US intensities, which can have a negative impact on healthy tissues, are required. The effectiveness of US for medical purposes can be significantly improved by using the so-called sonosensitizers, which can enhance the thermal effect of US on the tissue by increasing US absorption. One possible candidate for such sonosensitizers are magnetic nanoparticles with mean sizes of 10-300 nm, which can be efficiently heated because of additional attenuation and scattering of US. Additionally, magnetic nanoparticles are able to produce heat in the alternating magnetic field (magnetic hyperthermia). The synergetic application of ultrasonic and magnetic hyperthermia can lead to a promising treatment modality. [A. Jzefczak et al., App. Phys. Lett. 108, 263701 (2016)].</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /284/ <div class="p"><!----></div> Date: Wednesday 2016.10.12, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. in|. BartBomiej Salski</b> <div class="p"><!----></div> Affiliation: Instytut Radioelektroniki i Technik Multimedialnych, Politechnika Warszawska <div class="p"><!----></div> Title: <font color="#0000FF">Novel understanding of resonant modes in YIG microwave filters  experiments and electrodynamic study</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Numerical solutions of coupled Maxwell and Landau-Lifshitz-Gilbert equations for a magnetized yttrium iron garnet (YIG) sphere acting as a one-stage filter will be discussed. The filter will be analysed using finite-difference time-domain technique. Contrary to the state of the art, it will be shown that the maximum electromagnetic power transmission through the YIG filter occurs at the frequency of the magnetic plasmon resonance with the effective permeability of the gyromagnetic medium , and not at a ferromagnetic resonance frequency. Such a new understanding of the YIG filter operation, makes it one of the most commonly used single-negative plasmonic metamaterials. The frequency of maximum transmission is also found to weakly depend on the size of the YIG sphere. An analytic electromagnetic analysis of resonances in a YIG sphere is performed for circularly polarized electromagnetic fields.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /283/ <div class="p"><!----></div> Date: Friday 2016.10.07, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. Krzysztof Gibasiewicz</b> <div class="p"><!----></div> Affiliation: Molecular Biophysics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Energy and electron transfer in photosynthetic proteins - fundamental and applied studies</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> During the lecture I will briefly present the results of my and my group s studies being conducted within the last six years. Most of them comes from the fundamental experimental studies performed using the optical spectroscopic techniques on photosynthetic proteins isolated from bacteria, algae, and plants. These studies contributed, among others to understanding the role of the protein dynamics in intraprotein electron transport. I will also present our attempts to use the photosynthetic proteins in solar cells.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /282/ <div class="p"><!----></div> Date: Friday 2016.10.07, 10:00 <div class="p"><!----></div> Speaker: <b>Dr hab. PaweB KurzyDski</b> <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Faculty of Physics, Adam Mickiewicz University and Centre for Quantum Technologies, National University of Singapore <div class="p"><!----></div> Title: <font color="#0000FF">Indistinguishability, strong correlations and their dynamics in the quantum world</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum particles exhibit peculiar correlations that cannot be described by classical theories. These correlations are responsible for various physical phenomena and they lie at the heart of modern information theory. Additional complex features of quantum correlations are manifested when the underlying particles are fundamentally indistinguishable and when their dynamics occurs in interacting and open systems. In this talk I will present my recent results on how to describe, detect and model the evolution of quantum correlations in various scenarios. I will also discuss my future research directions related to this topic.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /281/ <div class="p"><!----></div> Date: Wednesday 2016.10.05, 10:00 <div class="p"><!----></div> Speaker: <b>M.Sc. Justyna Aodyga</b> <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Measure-independent conditional uncertainty principle</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The uncertainty principle, which states that certain sets of quantum-mechanical measurements have a minimal joint uncertainty, has many applications in quantum cryptography. But in such applications, it is important to consider the effect of a (sometimes adversarially controlled) memory that can be correlated with the system being measured. The information retained by such a memory can in fact diminish the uncertainty of measurements. Recently, different uncertainty relations in the presence of memory were formulated in terms of the von Neumann conditional entropy. However, the entropy is not the only measure that can be used to quantify conditional uncertainty. Here, we develop a general operational framework that formalizes the concept of conditional uncertainty in a measure-independent form. Our formalism is built around a mathematical relation that we call conditional majorization. We define and characterize conditional majorization and demonstrate the use of this framework by deriving measure-independent conditional uncertainty relation in a tripartite scenario. In particular, we provide a state-independent lower bound on the minimal joint uncertainty that two remote parties (Bob and Eve) have about the outcome of a given pair of measurements performed by a third remote party (Alice), conditioned on arbitrary measurements that Bob and Eve make on their own systems.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /280/ <div class="p"><!----></div> Date: Wednesday 2016.06.29, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Richard J. Spontak</b> <div class="p"><!----></div> Affiliation: Department of Chemical &amp; Biomolecular Engineering, and Materials Science &amp; Engineering, North Carolina State University, Raleigh, U.S.A. <div class="p"><!----></div> Title: <font color="#0000FF">The Dawning of a New Age for Thermoplastic Elastomers as Functional Materials</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> With recent advances made in the design and development of multifunctional polymeric materials, elastomers derived from triblock copolymers are in a good position to meet contemporary materials challenges and explore new technological opportunities. In this spirit, we consider the versatility of thermoplastic elastomer (TPE) systems, which provide an attractive alternative to chemically cross-linked materials because of their ability to microphase-separate and form nanostructures connected by a physically cross-linked network capable of withstanding substantial deformation. We first consider the stimuli responsiveness of triblock copolymers in the presence of midblock-selective additives. Upon incorporation of a midblock-selective oligomer, the molecular network formed by such copolymers can be tunably swollen to yield highly elastic soft systems, which exhibit composition-tunable mechanical properties (including time-composition rheological equivalence), as well as remarkable electromechanical properties. The morphological features and mechanical properties of swollen TPE gel systems generated from commercial and model styrenic TPEs will be surveyed. These materials, subjected to electrical stimulation as electroelastomers (i.e., dielectric elastomers) between compliant electrodes, are shown to achieve actuation strains greater than 300% and electromechanical coupling efficiencies in excess of 90%. The electrostatic mechanism by which electroactuation proceeds, as well as comparisons with other materials, will be discussed. Unlike conventional dielectric elastomers composed of chemically cross-linked elastomers, these copolymer systems are easily processable and broadly tunable in terms of composition, concentration and molecular weight, and they exhibit little cyclic hysteresis. In the case of acrylic TPEs, electroactuation occurs without the need for mechanical prestrain (often required to thin specimens so that lower voltages can be used to achieve high fields). These same triblock copolymers can be designed in conjunction with liquid metals to yield ultrastretchable/flexible electronic wires and antennae capable of remaining conductive beyond 1000% strain, as well as with phase-change additives to impart high-fixity/recovery shape memory. Incorporation of a charged midblock permits addition of polar additives that can further extend the scientific and technological diversity of TPEs. Development of stimuli-responsive, hyperelastic and shape-recovering polymeric materials, such as those to be presented here, is critical for emerging applications such as (micro)robotics, microfluidics and various biomedical devices.</blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /279/ <div class="p"><!----></div> Date: Wednesday 2016.06.15, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Ireneusz Weymann</b> <div class="p"><!----></div> Affiliation: Mesoscopic Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Andreev transport in hybrid quantum dots</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We will discuss the transport properties of quantum dots coupled to superconducting and normal electrodes, focusing on the transport regime where the current flows due to Andreev reflection. In the case of weak coupling between the leads and the dot, we show that Andreev current exhibits a nontrivial dependence on the bias and gate voltages, which is also reflected in magnetoresistive properties of the device. Moreover, we predict a zero-bias anomaly of the Andreev differential conductance in the parallel configuration of leads magnetizations, which is associated with a nonequilibrium spin accumulation in the dot triggered by Andreev processes. On the other hand, in the case of strong coupling between the leads and the dot, we study the influence of electron pairing on the Kondo state and show that the emerging Kondo resonance can be significantly enhanced by increasing the coupling to superconducting lead.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /278/ <div class="p"><!----></div> Date: Wednesday 2016.06.08, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Marek Cinal</b> <div class="p"><!----></div> Affiliation: Institute of Physical Chemistry, Polish Academy of Science, Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Magnetic damping in metallic layered systems</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Dynamic magnetic phenomena, such as magnetization switching by spin transfer torque and the current-induced motion of domain walls, are strongly affected by spin relaxation. The Landau-Lifshitz-Gilbert equation which describes magnetization dynamics and is used as the basis for micromagnetic simulations, accounts for spin relaxation by the inclusion of the phenomenological damping term. The microscopic origin of the Gilbert damping is the spin-orbit interaction which also plays the key role in other effects of high relevance to spintronic applications. The talk will present quantum mechanical calculations of the Gilbert damping constant in magnetic layered systems (ferromagnetic films, ferromagnet/nonmagnet bi-, tri-, and multilayers built of transition metals) within the torque-correlation model. It will be reported how the damping constant depends on the type of nonmagnetic layers and the geometric dimensions of the considered structures. The origin of such dependences, including nonlocal damping in magnetic trilayers, will be analyzed using the spatial decomposition of the damping constant. In particular, the conditions for the enhancement of the Gilbert damping will be discussed.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /277/ <div class="p"><!----></div> Date: Monday 2016.06.06, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Felix Pollock</b> <div class="p"><!----></div> Affiliation: School of Physics &amp; Astronomy, Monash University, Australia <div class="p"><!----></div> Title: <font color="#0000FF">How often does nature forget? The characterisation and statistics of non-Markovian quantum processes</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In all but the most trivial open quantum process, some amount information about a system's state will be `remembered' by its environment, influencing the system's future evolution. However, in practice, the assumption of environmental `forgetfulness' or Markovianity is almost always made. This is partly for practical reasons - until now there has been no unified framework to describe the most general non-Markovian quantum dynamics - but also remarkably, because the Markovian assumption appears to be valid in many cases. I will present a new scheme for operationally characterising non-Markovian quantum processes, which both gives a theoretical understanding of such processes and provides a recipe for reconstructing them experimentally. Moreover, this scheme yields a natural measure on the space of of all processes, which I will use to ask the question: how Markovian is nature on average?</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /276/ <div class="p"><!----></div> Date: Wednesday 2016.05.25, 12:00 <div class="p"><!----></div> Speaker: <b>M.Sc. Marcin Jarzyna</b> <div class="p"><!----></div> Affiliation: Faculty of Physics, University of Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Superadditivity in classical communication from a quantum parameter estimation perspective</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We point out a contrasting role the entanglement plays in communication and estimation scenarios. In the case of communication it brings benefits both at the detection and input stages, the facts known as output and input super-additvity respectively. On the other hand, in estimation it is only the entanglement of the input probes that enables performance enhancement and we do not observe output super-additivity. We identify a regime where a connection between concepts crucial to the two fields is demonstrated. This allows us to shed new light on the problem of super-additivity in communication. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /275/ <div class="p"><!----></div> Date: Tuesday 2016.05.17, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Keith E. Gubbins</b> <div class="p"><!----></div> Affiliation: Department of Chemical </td><td width="150"> Biomolecular Engineering, North Carolina State University, Raleigh, U.S.A. <div class="p"><!----></div> Title: <font color="#0000FF">Confinement-induced high pressure phases in nanopores: Can the pressure be in the megabar range? </font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2016Gubbins.pdf">[PDF]</a>&nbsp; There is an abundance of anecdotal evidence that nanophases adsorbed within nanoporous materials can exhibit high pressures as a result of the confinement [1,2]. For example, phase changes and chemical reactions that only occur at high pressures in the bulk phase occur in the confined phase at bulk phase pressures that are orders of magnitude lower. The pressure in the pore is a second order tensor, and for simple pore geometries has both a normal pressure component (normal to the walls) and one or more tangential components (parallel to the walls). For simple fluids in pores that are up to a few nanometers in width, molecular simulations show that both the normal and tangential pressures can be locally very high (thousands or tens of thousands of bars) in the pore, even though the bulk phase in equilibrium with the pore is at a pressure of one bar or less. The cause of these high in-pore pressures will be discussed, and where possible comparison with experimental results will be made [3]. When the molecules in the confined nanophase react with each other chemically it may be possible to achieve even higher tangential pressures, in the megabar range. Evidence for this is provided by recent experiments on sulfur (an insulator at ambient conditions) in narrow single-walled carbon nanotubes, carried out by Kaneko and coworkers [4]. They find that the sulfur atoms within the pore covalently bond to form a one-dimensional phase that is metallic. In the bulk phase sulfur forms a metallic phase only at pressures above 95 GPa. In our recent molecular dynamics simulations of this system we find that the sulfur atoms are covalently bonded in the pore and that they experience tangential pressures in excess of 100 GPa as a result of the strong confinement [5].<br /><br /> [1] Yun Long, Jeremy C. Palmer, Benoit Coasne, MaBgorzata Zliwinska-Bartkowiak and Keith E. Gubbins,  Pressure enhancement in carbon nanopores: A major confinement effect , Physical Chemistry Chemical Physics, 13, 17163-17170 (2011).<br /> [2] Yun Long, Jeremy C. Palmer, Benoit Coasne, MaBgorzata Zliwinska-Bartkowiak, George Jackson, Erich A. Mller and Keith E. Gubbins,  On the Molecular Origin of High Pressure Effects in Nanoconfinement: Effects of Surface Chemistry and Roughness , Journal of Chemical Physics, 139, 144701 (2013).<br /> [3] M. Zliwinska-Bartkowiak,H. Drozdowski, M. Kempinski, M. Jazdzewska, Y. Long, J.C. Palmer and K.E. Gubbins,  Structural Analysis of the Behavior of Water Adsorbed in Activated Carbon Fibers , Physical Chemistry Chemical Physics, DOI: 10.1039/C2CP22111J (2012).<br /> [4] Y. Fujimori, A. Morelos-Gmez, Z. Zhu, et al.,  Conducting Linear Chains of Sulphur Inside Carbon Nanotubes , Nature Comm., 4, DOI 10.1038/ncomms3162 (2013).<br /> [5] K.E. Gubbins, C.A Addington and J.M. Mansell, to be published.</blockquote> <div class="p"><!----></div> Chair: Prof. MaBgorzata ZliwiDska-Bartkowiak <div class="p"><!----></div> </li> <li> /274/ <div class="p"><!----></div> Date: Thursday 2016.05.12, 12:00 <div class="p"><!----></div> <div class="p"><!----></div> Speaker: <b>Dr Maria Rosrio Correia</b> <div class="p"><!----></div> Affiliation: Auxiliary Professor of Physics Department of University of Aveiro, Researcher at I3N Associated Laboratory-Aveiro, Departmental coordinator of Erasmus+ and Campus Europae <div class="p"><!----></div> Title: <font color="#0000FF">Raman Spectroscopy in the study of structural and optical properties of different semiconductor nanostructures</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> For desired applications, a deep knowledge of the materials optical properties should be thoroughly investigated to improve their efficiency and device development. The Raman spectroscopy has been proved to be a powerful nondestructive technique that enables the investigation of the structural, electronic and optical properties of semiconductors nanostructures. In this talk an overview of the fundamental theoretical aspects of Raman scattering in will be given. The potentialities of the technique on the characterization of different semiconductor structures, will discussed based on cases study. The effect of the strain and compositional effects on the optical phonons of semiconductors based alloys, doping effects on the polar optical phonons, resonant effects, and confined effects in nanostructures are highlighted. </blockquote> <div class="p"><!----></div> Chair: Prof. Krzysztof Grygiel <div class="p"><!----></div> </li> <li> /273/ <div class="p"><!----></div> Date: Wednesday 2016.05.11, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Marcus Mnzenberg</b> <div class="p"><!----></div> Affiliation: Department of Physics, Ernst-Moritz-Arndt-University, Greifswald, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Ultrafast dynamics of spins and spin currents: magnetic storage and spintronic THz emitter</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2016Munzenberg.pdf">[PDF]</a>&nbsp; Magnetization manipulation is an indispensable tool for both basic and applied research. I will discuss some of the knobs to tune dynamics at ultrafast time scales. The dynamics of the response depends on the energy transfer from the laser excited electrons to the spins within the first femtoseconds. This determines the speed of the ultrafast magnetization: if the electrons are driven to a strong excitation density, a second slower process is found. This slowdown is a signature of the intrinsic ferromagnetic electron correlations in a ferromagnet. One possibility of control is to shape the properties of the electronic system. A special material of interest for magnetic storage development is FePt. This material allows an interesting modification of its density of states: Pt alloying increases the magnetic anisotropy and reduces the number of states at the Fermi level making it  more noble . Consequently, the electron temperature shoots to higher values above the Curie temperature, a precondition for all-optical writing [1,2]. On the other side due to the non-equilibrium electron distribution, also ultrafast currents are generated and contribute to the laser driven spin dynamics. Similarly, to shaping the density of states in the first example, adjacent layers of a noble metals like Pt, Au or transition metals like W, Ta, Ru can shape the THz spin currents and convert ultrafast laser-driven spin currents via the ultrafast spin-Hall effect into a charge current burst. This opens a way towards novel THz spintronic devices: optimizing thicknesses and layers, we can realize efficient metallic THz spintronic emitters of ultra-broadband terahertz radiation competing with state-of-art photo-conductive switches THz emitters used for airport security [3,4]. <br /><br /> [1] J. Mendil, P. C. Nieves, O. Chubykalo-Fesenko, J. Walowski, M. Mnzenberg, T. Santos, S. Pisana, Sci. Rep. 4, 3980 (2014).<br /> [2] U. Atxitia, O. Chubykalo-Fesenko, J. Walowski, A. Mann, and M. Mnzenberg, Phys. Rev. B 81, 174401 (2010).<br /> [3] T. Kampfrath, M. Battiato, P. Maldonado, G. Eilers, J. Ntzold, S. Mhrlein, V. Zbarskyy, F. Freimuth, Y. Mokrousov, S. Blgel, M. Wolf, I. Radu, P. M. Oppeneer, M. Mnzenberg, Nature Nanotech. 8, 256 (2013).<br /> [4] T. Seifert, et al. arXiv:1510.03729</blockquote> <div class="p"><!----></div> Chair: dr hab. JarosBaw W. KBos <div class="p"><!----></div> </li> <li> /272/ <div class="p"><!----></div> Date: Wednesday 2016.05.04, 12:00 <div class="p"><!----></div> Speaker: <b>Dr MichaB Mruczkiewicz</b> <div class="p"><!----></div> Affiliation: Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska cesta 9, 841 04 Bratislava, Slovakia <div class="p"><!----></div> Title: <font color="#0000FF">Particular Properties of Spin Waves in Magnonic Crystals</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In the presentation I will show the results of investigation on spin waves in periodic ferromagnetic structures (magnonic crystals). The patterning at nanoscale permits to alter the propagation of spin waves and modify their properties. The focus of study is put on the following topics related to spin waves properties: i) standing spin wave formation in magnonic crystals ii) metamaterial properties for electromagnetic waves propagating through magnonic crystal, iii) nonreciprocal dispersion of spin waves and iv) collective dynamical skyrmion excitations in the arrays of magnetic dots. </blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /271/ <div class="p"><!----></div> Date: Wednesday 2016.04.20, 10:00 <div class="p"><!----></div> Speaker: <b>Prof. Antoni Wjcik</b> <div class="p"><!----></div> Affiliation: ZakBad Elektroniki Kwantowej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Klasyczne spltanie czyli popltanie poj</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Seminarium bdzie kontynuacj zeszBorocznego seminarium profesora Ryszarda Tanasia, na ktrym zaprezentowane zostaBy wyniki dotyczce tzw. klasycznego spltania. ChciaBbym przedstawi ujednolicony i uproszczony model kilku r|nych eksperymentw (Phys. Rev. Lett. 88 (2002) 097902, Sci.Rep. 5 (2015) 9175, arxiv: 1406.3338, arxiv: 1511.02265, arxiv: 1511.08144), ktrych wyniki autorzy interpretuj w kategoriach nieklasycznych korelacji klasycznych obiektw. Prosty model pozwala na krytyczne odniesienie si do takich interpretacji i pozwala lepiej zrozumie sens mierzonych parametrw.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /270/ <div class="p"><!----></div> Date: Monday 2016.04.18, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Maciej Bilicki</b> <div class="p"><!----></div> Affiliation: Sterrewacht Leiden, Universiteit Leiden, Netherlands <div class="p"><!----></div> Title: <font color="#0000FF">Observational cosmology with the largest surveys of galaxies</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> One of the pillars of the standard cosmological model is the observed distribution of galaxies on the largest scales, from our cosmic neighbourhood to the farthest possible distances. I will shortly describe how our knowledge of this distribution is being gathered thanks to galaxy surveys, with a short historical summary as well as the current status and future prospects. I will also mention examples of cosmological information that can be derived from such data and finally I will present my own and my collaborators' work on such surveys, with an emphasis on data sets covering the full extragalactic sky.</blockquote> <div class="p"><!----></div> Chair: Dr Agata Karska <div class="p"><!----></div> </li> <li> /269/ <div class="p"><!----></div> Date: Wednesday 2016.04.13, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Tomasz Stobiecki</b> <div class="p"><!----></div> Affiliation: Katedra Elektroniki, Akademia Grniczo-Hutnicza w Krakowie <div class="p"><!----></div> Title: <font color="#0000FF">Nanourzdzenia elektroniki spinowej: magnetyczne zBcza tunelowe i spin-torque oscylatory<br />(przegld badaD prowadzonych na AGH)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2016Stobiecki.pdf">[PDF]</a>&nbsp; W referacie omwi wyniki badaD prowadzonych w Katedrze Elektroniki AGH nad magnetycznymi zBczami tunelowymi z anizotropi magnetyczn w pBaszczyznie i prostopadB, zwracajc szczegln uwag na prd krytyczny potrzebny do przeBczenia magnetyzacji i stabilno[ termiczn zBcza. Na przykBadzie magnetorezystancyjnych nanoelementw (AMR, GMR i TMR), dziaBajcych w oparciu o efekt diody spinowej przedyskutuj wzbudzenia jednorodnych modw FMR i fal spinowych.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /268/ <div class="p"><!----></div> Date: Wednesday 2016.04.6, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Andrzej Wawro</b> <div class="p"><!----></div> Affiliation: Institute of Physics of the Polish Academy of Sciences, Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Cienkowarstwowe nanokropki magnetyczne indukowane strukturyzowanym podBo|em</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2016Wawro.pdf">[PDF]</a>&nbsp; Wykorzystujc samoorganizujcy si wzrost wysp Au o rozmiarach kilkudziesiciu nanometrw na powierzchni warstwy Mo [1] oraz siln zale|no[ anizotropii magnetycznej ultracienkiej warstwy Co od rodzaju bufora, na ktrym jest ona osadzana, wytworzono w systemie MBE (molecular beam epitaxy) ukBad epitaksjalnych kropek magnetycznych [2, 3]. Kropki stanowi ta cz[ warstwy Co, ktra jest osadzona na powierzchni wysp Au. S one otoczone matryc  warstw Co osadzon bezpo[rednio na powierzchni Mo, pomidzy wyspami Au. W zale|no[ci od grubo[ci warstwy Co kropki i matryca charakteryzuj si r|nymi wzajemnymi kierunkami namagnesowania. Szczeglna uwaga po[wicona jest konfiguracji, w ktrej kropki s namagnesowane prostopadle do pBaszczyzny warstwy, a namagnesowanie matrycy le|y w jej pBaszczyznie. Stan remanencyjny ukBadu oraz procesy przemagnesowania kropek badane s przy pomocy techniki magnetooptycznej (PMOKE) oraz mikroskopii siB magnetycznych (MFM). Magnetyczny jednodomenowy charakter w du|ym zakresie rozmiarw kropek wynika z wysokiej jako[ci ich struktury krystalicznej. Skorelowano wielko[ pola przeBczania magnetycznego kropek z ich rozmiarami. Przeprowadzono symulacje mikromagnetyczne ilustrujce procesy przemagnesowania kropek oraz profile namagnesowania [4]. Symulacje te wykonano dla rozmiarw i ksztaBtw kropek obserwowanych w eksperymencie. Poddano rwnie| analizie wpByw wewntrznej struktury kropek typu core/edge. Zaproponowano diagram fazowy stanw magnetycznych i mechanizmw przemagnesowania kropek w funkcji parametrw opisujcych ich struktur. <br /><br /> [1] A. Wawro et al., Nanotechnology 21 (2010) 335606.<br /> [2] A. Wawro et al., Europhys. Lett. 89 (2010) 37003.<br /> [3] A. Wawro et al., Phys. Rev. B 83 (2011) 092405.<br /> [4] E. MiliDska and A. Wawro, J. Appl. Phys. 116 (2014) 193905.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /267/ <div class="p"><!----></div> Date: Wednesday 2016.03.23, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Igor Lyubchanskii</b> <div class="p"><!----></div> Affiliation: Donetsk Physical and Technical Institute of the National Academy of Sciences of Ukraine and Department of Physics and Technology, Donetsk National University <div class="p"><!----></div> Title: <font color="#0000FF">Cascading processes in the nonlinear diffraction of light by standing acoustic waves</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The contribution of two types of cascading process to the nonlinear optical diffraction of electromagnetic waves from a standing acoustic wave in a GaAs crystal is theoretically studied. The first type of cascading process results from second-harmonic generation followed by linear acousto-optical diffraction, while the second type involves linear acousto-optical diffraction from the standing acoustic wave and subsequent sum-frequency generation. In contrast to the third, direct, nonlinear acousto-optical diffraction process we previously investigated, the photoelastic interaction between electromagnetic and acoustic waves is here linear. We establish the rules governing the cascading processes and show that in most cases the output signal simultaneously results from two or even three of the possible nonlinear diffraction mechanisms. However, we demonstrate that a careful choice of the incidence angles of the incoming electromagnetic waves, of the polarization combinations of the incoming and diffracted waves, and of the type of acoustic wave (longitudinal or transverse) makes it always possible to distinguish between the direct and either of the two cascading processes. </blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /266/ <div class="p"><!----></div> Date: Wednesday 2016.03.9, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Joanna Trylska</b> <div class="p"><!----></div> Affiliation: Centre of New Technologies, University of Warsaw<br /> (Centrum Nowych Technologii Uniwersytetu Warszawskiego) <div class="p"><!----></div> Title: <font color="#0000FF">Molecular dynamics simulations of ribosomal RNA</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> RNA has a complicated tertiary architecture and its internal dynamics is often related to function. To investigate the flexibility of RNA molecules we apply molecular dynamics simulations using different approximations; from all-atom representation in explicit solvent to simplified coarse-grained models. I will present examples of applications of molecular dynamics simulations to ribosomal RNA and experiments to determine thermodynamics of various ribosomal RNA fragments. </blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /265/ <div class="p"><!----></div> Date: Thursday 2016.03.3, 16:00 <div class="p"><!----></div> Venue: Seminar room in Nano-Bio-Med Centre <div class="p"><!----></div> Speaker: <b>Prof. Kwong-Yu Chan</b> <div class="p"><!----></div> Affiliation: Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong <div class="p"><!----></div> Title: <font color="#0000FF">Polyelectrolyte Threaded in Metal-Organic Framework: A Lattice Boltzmann Material?</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> A new concept of structuring fixed charges in the nanoscale for optimum ion exchange performance is introduced. Crystalline porous charge exchange materials such as zeolites are inflexible and are restricted to cation exchange. Polymer resins have irregular porous structures. Fixed charges hidden by hydrophobic forces are exposed only after swelling in aqueous immersion. Threading polyelectrolyte chains into metal organic frameworks (MOF) form a superior ion exchange material that possesses advantages of both ceramic and polymeric domains. We report two new composites of polyelectrolytes synthesized within a MOF structure [1, 2].<br /> <div class="p"><!----></div> Cation exchange function is provided by sodium poly(4-styrene sulfonate) threaded in MIL-101 denoted as NaPSS&nbsp;MIL-101.[1] It is synthesized directly with polymerization in situ of the MOF, as shown in Figure 1. The NaPSS&nbsp;MIL-101 polyelectrolyte threaded in MOF has high surface area of 1850 m2/g and a large specific volume 0.85 mL/g. Figure 2(a) compares the ion adsorption kinetics to commercial ion-exchange resin IR-120. Excellent selectivity based on charge is demonstrated when NaPSS&nbsp;MIL-101 is immersed into a solution of two organic dyes, as shown in Figure 2(b). The anionic Acid Blue 9 is excluded though it has significant van der Waals affinity to high surface porous materials.Another example of polyelectrolyte synthesized in MOF is demonstrated by anionic polyvinyl benzyl trimethylammonium hydroxide (PVBTAH) threaded in ZIF-8 (PVBTAH&nbsp;ZIF-8), with structure shown in Fig. 3 [2].<br /> <div class="p"><!----></div> The high porosity, high surface area, uniform and ordered structure of metal organic frameworks provide fast reversible ion transport in a rigid nanoporous structure. On the other hand polyelectrolyte chains have their charges well separated and organized by the MOF framework, with reversible and local flexibility for ion-exchange function, as illustrated in Figure 3. This is analogous to the Lattice-Boltzmann model of discretizing and localizing dynamics of polymeric chains over a grid.<br /><br /> <div class="p"><!----></div> [1] Liang Gao, Chi-Ying Vanessa Li, and Kwong-Yu Chan, "Polystyrene Sulfonate threaded in MIL-101Cr(III): a Cationic Polyelectrolyte Synthesized Directly into a Metal-Organic Framework", Chem. Mater. DOI: 10.1021/cm504623r. Publication Date (Web): April 30, 2015.<br /> <div class="p"><!----></div> [2] L. Gao, C.Y. V. Li, K.Y. Chan, and Z.N. Chen, "Metal-Organic Framework Threaded with Aminated Polymer Formed in Situ for Fast and Reversible Ion Exchange", J. Am. Chem. Soc. 136 (2014) 7209-7212.</blockquote> <div class="p"><!----></div> Chair: Prof. Stefan Jurga <div class="p"><!----></div> </li> <li> /264/ <div class="p"><!----></div> Date: Wednesday 2016.02.10, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. Izabela Szafraniak-Wiza</b> <div class="p"><!----></div> Affiliation: Institute of Materials Science and Engineering, PoznaD University of Technology <div class="p"><!----></div> Title: <font color="#0000FF">Ferroelectric perovskites for modern electronics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Ferroelectric materials offer a wide range of useful properties such as spontaneous polarization, pyroelectric, piezoelectric, and electro-optic effects that can be applied in non-volatile memories, actuators, transducers, and thermal sensors. From technological point of view several important issues concerning applications of ferroelectrics (like size effects, one dimensional structures, lead-free materials, multiferroic bismuth ferrite) are important and will be presented in this talk. Perovskites and perovkite-like compounds are conventionally obtained by solid-state reactions or wet-chemistry. The methods are related to high production costs and have serious disadvantages. A much less expensive alternative to the chemistry-based techniques is a direct synthesis from respective oxides at room temperature via mechanically triggered chemical reaction. The room temperature synthesis lowers the fabrication costs, eliminates the undesirable losses of volatile elements and enables the control of chemical and stoichiometry composition. The method has been recently used to obtain nanocrystalline electroceramic materials of perovskite structure like BiFeO<sub>3</sub>, PZT, Ba(Ti,Ca)O<sub>3</sub>, Ba(Fe<sub>1/2</sub>Nb<sub>1/2</sub>)O<sub>3</sub>, Bi<sub>3</sub>TiNbO<sub>3</sub>. The influence of the mechanochemical synthesis or mechanical activation on the final properties of the nanopowders and/or ceramics (obtained from those powders) will been discussed.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /263/ <div class="p"><!----></div> Date: Friday 2016.01.29, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Jan Perina Jr.</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Science of the Czech Republic, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Coherence and dimensionality of twin beams generated from depleted pump fields</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Using the model of parametric interaction based on the spatio-spectral Schmidt modes and generalized parametric approximation, we analyze coherence and mode structure of ultra-intense twin beams generated in the regime with pump depletion. We show that the increase of spatial and spectral coherence with the increasing pump power observed for moderate powers is replaced by the decrease for the pump powers at which pump depletion occurs. This behavior of coherence is opposed to that exhibited by the number of spatio-spectral modes effectively constituting the twin beam. The conditions for maximal coherence are analyzed considering pump-beam parameters (spectral width, transverse radius). The existence of additional coherence maxima occurring at even higher pump powers is predicted and explained by the oscillatory evolution of the modes' populations. Comparison with the experimental results is discussed.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /262/ <div class="p"><!----></div> Date: Wednesday 2016.01.27, 12:00 <div class="p"><!----></div> Note: A short tutorial on <font color="#0000FF">"How to apply for ERC grants"</font> will follow at 14:30. <div class="p"><!----></div> Speaker: <b>Dr Stefan Gillessen</b> <div class="p"><!----></div> Affiliation: Max-Planck-Institut fr extraterrestrische Physik, Garching, Germany <div class="p"><!----></div> Title: <font color="#0000FF">The Galactic Center: A unique astrophysical laboratory</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2016Gillessen.pdf">[PDF]</a>&nbsp; Located at 8kpc only, the Galactic Center allows studying a galactic nucleus in unparalleled detail. With the advent of high-resolution, near-infrared instrumentation in the last decade it became possible to follow individual stellar orbits around the radio source Sgr A* with orbital periods as short as 12 years. The orbits provide compelling evidence for the massive black hole paradigm. The next generation near-infrared instrument GRAVITY aims at interferometrically combining the light of the four telescopes of ESO's VLT. The higher resolution will allow monitoring stellar orbits with orbital periods of 1 year only, and the relativistic prograde periastron precession gets accessible. The astrometric accuracy of GRAVITY is of order of the event horizon size of Sgr A*. This means that we might have access to measuring the spin of Sgr A*. In the past few years the small gas cloud G2 has been approaching Sgr A*. We were able to follow the tidal evolution of G2 for a decade, beautifully showing how the object got stretched ever more and how it passed the point of closest approach in 2014. The cloud is a unique probe of Sgr A*'s atmosphere, and we have observational hints that gas passing so close to Sgr A* experiences a drag force.<br /><br /> Recommended popular articles:<br /> <a href="https://www.mpg.de/8777573/gas-cloud-galactic-centre">Gas cloud in the galactic centre</a>&nbsp;<br /> <a href="http://www.mpe.mpg.de/980185/News_20121105">ERC Starting Grant for Stefan Gillessen</a>&nbsp;<br /> <a href="https://www.eso.org/public/poland/news/eso1151/">Obiad czarnej dziury szybko si zbli|a</a>&nbsp;</blockquote> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Dr Agata Karska <div class="p"><!----></div> </li> <li> /261/ <div class="p"><!----></div> Date: Wednesday 2016.01.13, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Agata Karska</b> <div class="p"><!----></div> Affiliation: Astronomical Observatory of AMU <div class="p"><!----></div> Title: <font color="#0000FF">Interstellar molecules: A key to understand how stars like our Sun form</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Stars form continuously in the dense and cold molecular clouds in our Galaxy. At the earliest stages of their formation, the proto-stars are surrounded by large amounts of dust and gas which make them invisible in the optical light. The most useful are in fact far infrared wavelengths containing the maximum of the dust emission and the key molecular transitions. The latter are a powerful tool to investigate the physical conditions of the gas and thus the physical phenomena at play during the star formation. In my talk, I will present the state-of-the-art spectroscopy of star forming regions from the Herschel Space Telescope. I will show how the observations of interstellar molecules such as water and carbon monoxide help astronomers to understand the physics of essentially hidden stages of star formation.<br /><br /> Popular articles in Polish:<br /> <a href="http://www.academia.pan.pl/nasze-teksty/nauki-scisle/item/2407-na-poczatku-jest-woda">Na pocztku jest woda</a>&nbsp;<br /> <a href="http://www.polityka.pl/tygodnikpolityka/nauka/1640439,1,jak-powstaja-woda-i-gwiazdy.read">Zanim zabBysn</a>&nbsp;<br /> <a href="http://naukawpolsce.pap.pl/aktualnosci/news,407315,astronomka-z-poznania-asystuje-przy-narodzinach-gwiazd.html">Astronomka z Poznania asystuje przy narodzinach gwiazd</a>&nbsp; </blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /260/ <div class="p"><!----></div> Date: Friday 2016.01.8, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Koji Maruyama</b> <div class="p"><!----></div> Affiliation: Osaka City University, Osaka, and Waseda University, Tokyo, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Hamiltonian identification under limited access with minimal pre-knowledge</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In order to control a quantum system, we need the full information on its Hamiltonian. Yet, how can we know all the entries of a Hamiltonian matrix, especially when the system is large and our access is limited? The problem of Hamiltonian identification under limited access has recently been studied quite actively. Here, after reviewing our results, we ask a more ambitious question along the same lines; what if we don t know anything about the system and we still attempt to estimate its Hamiltonian through a small gateway? We shall discuss how we can probe such an  untouchable system E through a small gateway system S, paying a close attention to the equivalence class induced by the limitedness of access. The insight obtained hereby would open up a possibility of controlling a large quantum system with only a few parameters. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /259/ <div class="p"><!----></div> Date: Friday 2016.01.8, 10:00 <div class="p"><!----></div> Speaker: <b>Dr Koji Maruyama</b> <div class="p"><!----></div> Affiliation: Osaka City University, Osaka, and Waseda University, Tokyo, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Maxwell s demon and the physics of information</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The paradox of Maxwell s demon is probably the most famous example, in which physics (particularly thermodynamics) and the concept of information are linked. The tricky point of this paradox is in the necessity of the quantitative consideration of information acquisition by measurement. The related argument strengthened our notion that information processing is physical, and formed a firm basis of the science of quantum information. We will review the history of the efforts to resolve the paradox, the final exorcism by Landauer and Bennett, as well as some interesting consequences of the 2nd law [1].<br /><br /> [1] Koji Maruyama, Franco Nori, and Vlatko Vedral, <a href="http://dx.doi.org/10.1103/RevModPhys.81.1">Rev. Mod. Phys. 81, 1 (2009)</a>&nbsp;. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /258/ <div class="p"><!----></div> Date: Thursday 2016.01.7 <div class="p"><!----></div> Speaker: <b>Dr Koji Maruyama</b> <div class="p"><!----></div> <div class="p"><!----></div> Affiliation: Wolfram Research, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Introduction to Mathematica 10 - the wonderland of computer algebra system</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Mathematica is a software that was originally developed for researchers in mathematics and physics. Since its first release 26 years ago, it has evolved so greatly that it can now be applied to virtually everything, such as data visualisation, image processing, financial engineering, machine learning, etc., to name a few. We will cover as many functions it has as possible to impress you, and will answer any questions.</blockquote> <div class="p"><!----></div> The Mathematica notebook of this presentation can be downloaded from <a href="https://download.wolfram.com/?key=62BX94">https://download.wolfram.com/?key=62BX94</a>&nbsp; <div class="p"><!----></div> </li> <li> /257/ <div class="p"><!----></div> Date: Thursday 2015.12.10, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Joachim Gr&#228;fe</b> <div class="p"><!----></div> Affiliation: Max-Planck-Institut fr Intelligente Systeme, Stuttgart, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Static and Dynamic X-Ray Microscopy for Magnetic Nanostructures</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Magnetic nanostructures, that are patterned on the length scale of the dipole and exchange interaction, have gained significant scientific interest in the past years [1-6]. These nanostructures have great potential for technological applications in data processing and storage, and spintronics [1-6]. However, the measurement of their microscopic magnetisation behaviour is challenging. For this task we use a combination of fast MOKE based first-order reversal curve (FORC) measurements, that we recently developed [7], and x-ray microscopy with XMCD contrast at our own endstation MAXYMUS@BESSY. FORC allows the magnetic separation of individual magnetisation reversal processes without the need for high lateral resolution. X-ray microscopy on the other hand yields a detailed nanoscopic image of the magnetisation and allows the observation of magnetisation dynamics on a picosecond timescale. To showcase the capabilities of these two powerful methods an antidot lattice (ADL) based magnonic crystal is discussed, among others. FORC and static x-ray imaging provide a detailed insight into the very complex and orientation dependent magnetisation reversal processes of ADL samples. The full magnetisation reversal is achieved by a combination of several reversible and irreversible steps that could not have been distinguished by conventional magnetometry. Subsequently, the time resolution capabilities of x-ray microscopy are leveraged to directly observe the individual spin wave modes in the magnonic crystal in the range from 250 MHz up to 8 GHz. Finally, the understanding of the static and dynamic magnetisation behaviour of these magnonic crystals allows tuning the magnon propagation length within the ADL in a range from 0.5 to 15 m, thus, realising a simple spin wave filter.<br /><br /> [1] Lenk, B. et al.: Phys. Rep. 507 (2011), 107<br /> [2] Haiming, Y. et al.: Nat. Commun. 4 (2013), 2702<br /> [3] Heyderman, L. J. et al.: Phys. Rev. B 73 (2006), 214429<br /> [4] Schwarze, T.; Grundler, D.: Appl. Phys. Lett. 102 (2013), 22<br /> [5] Manzin, A.; Bottauscio, O.: J. Phys. D - Appl. Phys. 45 (2012), 095001<br /> [6] Haering, F. et al.: Nanotechnology 24 (2013), 055305<br /> [7] Grfe, J. et al.: Rev. Sci. Instr. 85 (2014), 023901</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /256/ <div class="p"><!----></div> Date: Wednesday 2015.12.9, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Oksana Gorobets</b> <div class="p"><!----></div> Affiliations: Institute of Magnetism, National Academy of Sciences of Ukraine, Kiev, Ukraine<br /> and National Technical University of Ukraine. Kiev, Ukraine <div class="p"><!----></div> Title: <font color="#0000FF">Effects of magnetic field at metal-aqueous electrolyte interface</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The seminar will be focused on the magneto-hydrodynamic stirring of electrolyte in the combined electric and magnetic fields. We will present the estimations of the order of magnitude of the gradient magnetic force, gradient paramagnetic force, Lorentz force and damping force acting on ions embedded in aqueous electrolytes. The focus will be given to influence of magnetic field on the effectively para- and diamagnetic products of electrochemical reactions and the effects of phase separation under inhomogeneous magnetic field and Earth gravitation will be discussed. We will discuss also the influence of stray magnetic field of the ferromagnetic electrodes on a deposit structure and electrokinetic effects under inhomogeneous magnetic field.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /255/ <div class="p"><!----></div> Date: Friday 2015.12.4, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Manfred Albrecht</b> <div class="p"><!----></div> Affiliation: Institute of Physics, University of Augsburg, D-86159 Augsburg, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Future concepts and materials for magnetic data storage</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2015Albrecht.pdf">[PDF]</a>&nbsp; Due to the increasing demand in high-density recording media, magnetic thin films with high magnetic anisotropy are widely studied in order to overcome the superparamagnetic effect. To fulfill the requirements of thermal stability, hard magnetic alloys, i.e. FePt alloys in the L10 phase are promising candidates as storage layer. However, owing to the large magnetic anisotropy, the magnetic field required to reverse the magnetization of the media may become higher than the field provided by a conventional recording head. To solve this, so-called writeability issue, the concepts of exchange-coupled composite (ECC) media as well as bit patterned media based on L10 FePt [1] were suggested, which will be discussed in this presentation. Furthermore, ultrafast magnetization switching is at the heart of both modern information storage technology and fundamental science. In this regard, it was recently observed that ultra-fast magnetization reversal processes can be induced by circularly polarized laser pulses in amorphous ferrimagnetic GdFeCo alloy thin films [2]. This novel observation resulted in a broad range of exciting and challenging fundamental questions, and may enable new applications based on ultra-fast spintronics. An overview of our activities on all-optical switching in amorphous ferrimagnetic Tb-Fe alloy films [3-5] will be presented.<br /><br /> [1] C. Brombacher, M. Grobis, J. Lee, J. Fidler, T. Eriksson, T. Werner, O. Hellwig, and M. Albrecht, Nanotechnology 23, 025301 (2012).<br /> [2] C. D. Stanciu, F. Hansteen, A. V. Kimel, A. Kirilyuk, A. Tsukamoto, A. Itoh, and Th. Rasing, Phys. Rev. Lett. 99, 047601 (2007).<br /> [3] A. Hassdenteufel, B. Hebler, C. Schubert, A. Liebig, M. Teich, M. Helm, M. Aeschlimann, M. Albrecht, and R. Bratschitsch, Advanced Materials 25, 3122 (2013).<br /> [4] C. Schubert, A. Hassdenteufel, P. Matthes, J. Schmidt, M. Helm, R. Bratschitsch, and M. Albrecht, Appl. Phys. Lett. 104, 082406 (2014).<br /> [5] A. Hassdenteufel, J. Schmidt, C. Schubert, B. Hebler, M. Helm, M. Albrecht, and R. Bratschitsch, Phys. Rev. B 91, 104431 (2015).</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /254/ <div class="p"><!----></div> Date: Wednesday 2015.11.25, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Andriy Serebryannikov</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki NanomateriaBw, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Hybrid propagation, scattering, reflection and absorption regimes in advanced photonic structures</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk is dedicated to the hybrid propagation, scattering, reflection, and absorption regimes that can be obtained in the advanced but still simple photonic structures and their microwave prototypes. Various manifestations of the diffraction inspired asymmetric transmission, a general phenomenon arising when using linear, isotropic, passive materials together with spatial inversion symmetry breaking, will be considered in the different structures, which include photonic crystal gratings, gratings made of ultralow-index materials, gratings based on hole-array metamaterials, and thin metallic gratings with a single subwavelength hole. The basic scenarios of directional selectivity achievable with the aid of these structures and their possible applications will be discussed. Then, the attention will be paid to ultrathin chiral metamaterials based on the coupled arrays of subwavelength resonators, which enable efficient polarization conversion and relevant channel and direction selectivity. The next topics will include reflection-enhanced absorption in photonic crystals made of polar dielectrics, multiple slow waves in graded-index photonic crystals, invisibility obtainable using high-index shells, and surface plasmons in deep annular-hole arrays. Finally, the transmission-mode spatial (angular) filtering in regular photonic crystals will be discussed alongside the reflection-mode spatial filtering, blazing, and splitting in thin reflector-backed gratings.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /253/ <div class="p"><!----></div> Date: Wednesday 2015.10.28, 12:00 <div class="p"><!----></div> Speaker: <b>Dr MichaB StudziDski</b> <div class="p"><!----></div> Affiliation: Uniwersytet GdaDski, Krajowe Centrum Informatyki Kwantowej w GdaDsku <div class="p"><!----></div> Title: <font color="#0000FF">Group representation approach to universal quantum cloning machines</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum information cannot be copied perfectly, in contrast with information from the "classical world". In other words, one is not able to copy perfectly an arbitrary quantum state. In terms of monogamy, if one wants to prepare some number of copies of the initially unknown quantum state, fidelities of cloning cannot be all equal to 1, there is a trade-off. This basic feature is known as  no-cloning theorem and was recognized by Wootters, Zurek and Dieks. But still there is possibility for imperfect cloning. Using group-theory formalism, we show that the allowed region for fidelities can be expressed in terms of overlaps of pure states with irreducible representations of the partially transposed permutation operators. Additionally, it is sufficient to take pure states with real coefficients only, which makes calculations simpler. To obtain the allowed region, we make a convex hull of possible ranges of fidelities related to a given irreducible representations.</blockquote> <div class="p"><!----></div> Chair: Prof. Andrzej Grudka <div class="p"><!----></div> </li> <li> /252/ <div class="p"><!----></div> Date: Wednesday 2015.10.21, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Andrzej Grudka</b> <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Do black holes create polyamory?</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Of course not, but if one believes that information cannot be destroyed in a theory of quantum gravity, then we run into apparent contradictions with quantum theory when we consider evaporating black holes. Namely that the no-cloning theorem or the principle of entanglement monogamy is violated. Here, we show that neither violation need hold, since, in arguing that black holes lead to cloning or non-monogamy, one needs to assume a tensor product structure between two points in space-time that could instead be viewed as causally connected. In the latter case, one is violating the semi-classical causal structure of space, which is a strictly weaker implication than cloning or non-monogamy. This is because both cloning and non-monogamy also lead to a breakdown of the semi-classical causal structure. We show that the lack of monogamy that can emerge in evaporating space times is one that is allowed in quantum mechanics, and is very naturally related to a lack of monogamy of correlations of outputs of measurements performed at subsequent instances of time of a single system. This is due to an interesting duality between temporal correlations and entanglement. A particular example of this is the Horowitz-Maldacena proposal, and we argue that it need not lead to cloning or violations of entanglement monogamy.</blockquote> <div class="p"><!----></div> Chair: dr Karol Bartkiewicz <div class="p"><!----></div> </li> <li> /251/ <div class="p"><!----></div> Date: Wednesday 2015.10.14, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Ronan Lefort</b> <div class="p"><!----></div> Affiliation: Universit de Rennes 1, France <div class="p"><!----></div> Title: <font color="#0000FF">Confinement-induced nano-segregation of amphiphilic binary liquids</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Environment care has now become a global societal challenge, on which physics and chemistry can turn to be leading actors and innovation leaders, especially in the domains of energetic transition, green nanoscience or ecomaterials. As an example, a great attention has been recently paid to the control of volatile organic compounds (VOCs) in home and working environments. Breakthroughs in the captation of VOCs have been achieved thanks to the mastering of novel porous nanomaterials, able to selectively filter or coadsorp molecular species. However, several scientific locks remain, related to the intricate balance of amphiphilic interactions and hydrogen-bond structures responsible for the behaviour of gaseous or liquid mixtures in nanopores. The physical parameters governing the nanostructures and the molecular dynamics of complex binary liquids confined in porous solids remain essentially unknown. We present here a general view of a model molecular binary system made of a ternary alcohol and an aprotic liquid, confined inside nanoporous silicas or carbons. Through a global experimental approach, we detail how the subtle balance of hydrophilic or -phobic interactions with interfaces in a nanoporous solid can lead to surprising nanostructures in the binary, and strongly affect both the hydrogen bonds network and the molecular dynamics of the system. We tentatively propose general routes for controlling coadsorption and/or nanofiltration of these complex binaries by tailoring specific nanoporous interfaces.</blockquote> <div class="p"><!----></div> Chair: Dr hab. Jacek Kubicki <div class="p"><!----></div> </li> <li> /250/ <div class="p"><!----></div> Date: Friday 2015.10.09, 10:00 <div class="p"><!----></div> Speaker: <b>Prof. Yuri Oganessian</b> <div class="p"><!----></div> Affiliation: Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, Russia <div class="p"><!----></div> Title: <font color="#0000FF">Discovery of Super Heavy Elements</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> One of the fundamental outcomes of the modern nuclear theory of is the prediction of the "stability islands" in the domain of the hypothetical super heavy elements. The enhanced stability has been expected for the deformed nuclei near Z=108 and N=162, yet much stronger effect has been predicted for heavier spherical nuclei close to the shells Z=114 and N=184. The talk is devoted to the experimental verification of these predictions  the synthesis and study of both the decay and chemical properties of the new elements.<br /> &nbsp;&nbsp;&nbsp; The synthesis of the heaviest nuclei with high neutron excess has been carried out in the fusion reactions of U and the isotopes of man-made elements: from Np up to Cf with the Ca-48 projectiles in 2000-2015. The decay properties of the 52 synthesized nuclei  the isotopes of elements 104-118 - obtained in 48Ca-induced reactions presents direct experimental evidence of the existence of the super heavy nuclei that considerably expand the Periodical Table of the chemical elements.<br /> &nbsp;&nbsp;&nbsp; Simultaneously in the chemical studies of elements 112-114 by methods of absorption gas chromatography the influence of the  relativistic effect on the chemical properties of the super heavy elements was obtained for the first time. The possibilities of further theoretical and experimental investigations in close collaboration with many European and American laboratories connected with construction in Flerov Laboratory  Super Heavy Element Factory are also discussed.<br /> &nbsp;&nbsp;&nbsp; In the talk are used the results obtained in FLNR (JINR, Dubna) in collaboration with LLNL, (Livermore, USA), ORNL (Oak-Ridge, USA), and Vanderbilt University (Nashville, USA), Texas A</td><td width="150"> M University (College Station, USA) as well as GSI (Darmstadt, Germany), PSI (Villigen, Switzerland) and RIKEN (Tokyo, Japan).</blockquote> <div class="p"><!----></div> <blockquote><b>Dodatkowe informacje:</b> Profesor Oganessian nale|y do liderw w skali [wiatowej w dziedzinie wytwarzania i badania wBasno[ci fizycznych i chemicznych super ci|kich pierwiastkw. Super ci|kie jdra atomowe tych pierwiastkw stanowi obiekt zaawansowanych badaD teoretycznych i eksperymentalnych prowadzonych w najlepszych centrach badawczych - gBwnie w Dubnej, USA i Niemczech. Profesor jest [wietnym wykBadowc potraficym z pasj przedstawia najnowsze wyniki badaD.</blockquote> <div class="p"><!----></div> Chair: Prof. Wojciech Nawrocik <div class="p"><!----></div> </li> <li> /249/ <div class="p"><!----></div> Date: Wednesday 2015.10.7, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Kenneth P. Mineart</b> <div class="p"><!----></div> Affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, USA <div class="p"><!----></div> Title: <font color="#0000FF">Understanding and Controlling the Morphology of a Midblock-Sulfonated Block Ionomer</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Block copolymers containing ionic pendant groups, or block ionomers, have become increasingly popular due to their potential application as fuel cell and water desalination membranes, as well as components in photovoltaic devices and polymeric actuators. Block ionomers hold promise in these applications because of their inherent ability to form separate ionic and nonpolar microdomains at nanoscale dimensions. Segregation of ionic and nonpolar segments enables simultaneous water, or ion, transport and mechanical robustness. This is especially true when ionic segments are located in the midblock of a multiblock copolymer. The ionic and nonpolar blocks are, however, highly incompatible, which can lead to long-term metastable morphologies. While thermal annealing is typically used to refine block copolymer self-assembly to equilibrium structures, most block ionomers have inaccessible glass transition temperatures, thereby making thermal annealing ineffective. The establishment of morphological control in block ionomers represents the main challenge preventing widespread use. Here, we explore a variety of nanostructures formed during solution casting and then investigate a facile means by which to equilibrate the morphological behavior of a midblock-sulfonated pentablock ionomer. A combination of transmission electron microscopy and tomography (TEM/T) and small-angle X-ray scattering (SAXS) are used to probe nanostructural features present in films produced from different casting strategies. Results indicate that solvent-templating of nano-features following solution casting is prominent, but that subsequent solvent vapor annealing can be effective in equilibrating the morphology. To the best of our knowledge, these results provide the first evidence of morphological control/refinement in a block ionomer of commercially relevant molecular weight.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Patkowski <div class="p"><!----></div> </li> <li> /248/ <div class="p"><!----></div> Date: Tuesday 2015.09.08, 12:00 <div class="p"><!----></div> Speaker: <b>Dr PaweB Zawadzki</b> <div class="p"><!----></div> Affiliation: Oxford University, UK <div class="p"><!----></div> Title: <font color="#0000FF">Mechanisms of bacterial chromosome repair and segregation studied by smFRET and Super-Resolution microscopy</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The single-molecules techniques are revolutionizing our understanding of biological processes and molecular mechanisms used by individual protein machines. I will introduce smFRET method and show how it was used to  observe multiple conformational changes within recombination complex, acting in late stages of bacterial chromosome segregation, directly showing how recombination is activated and regulated. On the other hand, the real challenge in biology is to observe how individual proteins perform their function within living cell. I will present super-resolution microscopy and the ways I explore it to understand how individual UvrA and UvrB initiate pathway of DNA repair. I will show how these novel biophysical methods are changing our understanding of DNA repair process.</blockquote> <div class="p"><!----></div> Chair: Prof. Jacek GapiDski <div class="p"><!----></div> </li> <li> /247/ <div class="p"><!----></div> Date: Monday 2015.07.13, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Keith E. Gubbins</b> <div class="p"><!----></div> Affiliation: Department of Chemical </td><td width="150"> Biochemical Engineering, North Carolina State University, Raleigh, USA <div class="p"><!----></div> Title: <font color="#0000FF">Corresponding States Theory for Thin Adsorbed Films</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. MaBgorzata ZliwiDska-Bartkowiak <div class="p"><!----></div> </li> <li> /246/ <div class="p"><!----></div> Date: Friday 2015.07.3, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Ken Onda</b> <div class="p"><!----></div> Affiliation: Interactive Research Center of Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Photoinduced Dynamics in Organic Solid Materials Studied by Time-resolved Infrared Vibrational Spectroscopy</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Recently photoinduced dynamics in organic solid materials have attracted more attention in terms of not only the fundamental physics but also the application to low-cost photo-electronic devices. However, photoinduced processes in organic materials are more complicated than those in inorganic solid materials due to their flexible and soft structures [1]. Time-resolved infrared vibrational spectroscopy is one of the ideal tools for studying these dynamics because a vibrational peak is sensitive to both local charge and structure in an organic solid material. We applied this method to the photoinduced phase transition in organic crystals and found that the different dynamics of charge and structure accompanied by the phase transition [2-4]. We also studied the initial photoexcited processes in metal complexes including a spin crossover complex and found the state which has not observed by the other methods [5]. Moreover, we confirmed that the results obtained by time-resolved vibrational spectroscopy is in good agreement with those by more structure sensitive time-resolved method, that is, time-resolved electron diffraction [6]. <div class="p"><!----></div> [1] K. Onda, et al. Acc. Chem. Res. 47, 3494 (2014).<br /> [2] Y. Matsubara, et al. J. Phys. Soc. Jpn. 80, 124711 (2011).<br /> [3] N. Fukazawa, et al. J. Phys. Chem. C 116, 5892 (2012).<br /> [4] N. Fukazawa, et al. J. Phys. Chem. C 117, 13187 (2013).<br /> [5] T. Mukuta, et al. Inorg. Chem. 53, 2481 (2014).<br /> [6] M. Gao, et al. Nature, 496, 343 (2013).</blockquote> <div class="p"><!----></div> Chair: Dr hab. Jacek Kubicki <div class="p"><!----></div> </li> <li> /245/ <div class="p"><!----></div> Date: Wednesday 2015.06.24, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Felix Pollock</b> <div class="p"><!----></div> Affiliation: Monash University in Melbourne, Australia <div class="p"><!----></div> Title: <font color="#0000FF">What a biased two-level system can tell you about its environment</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum process tomography (QPT), the full experimental determination of a quantum process, is usually used for benchmarking known systems. Here, I show how, by applying a large, controllable external bias, QPT of a two-level probe system can be used to determine a great deal about an unknown environment  including properties of its state and spectrum. The protocol I will discuss relies on few assumptions and could thus be applied to many systems of experimental interest, such as Bose-Einstein condensates, superconducting circuits and atoms in optical cavities. Within this talk, I will also discuss how one can do tomography for processes with initial correlations and hence those which are non-Markovian.</blockquote> <div class="p"><!----></div> Chair: Dr Karol Bartkiewicz <div class="p"><!----></div> </li> <li> /244/ <div class="p"><!----></div> Date: Wednesday 2015.06.10, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Fabrice Herpin</b> <div class="p"><!----></div> Affiliation: University of Bordeaux, France <div class="p"><!----></div> Title: <font color="#0000FF">Results from the Herschel Space Observatory mission</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The mission of the ESA Herschel satellite was completed in April 2013 after quite 4 years of activity. However, the incredible results of this far-infrared space observatory continue to revolutionize our view of the Universe. In particular, our knowledge of our Galaxy, of the stars and of our solar system has made significant progress thanks to the work carried out with this telescope, especially by the european teams. The formation mechanisms and the evolution of stars, of a few solar masses or greater, have revealed themselves a little more precisely: thanks to Herschel images and spectroscopic observations we now have a more global view of the genesis of stars and of their chemistry. The first complete observations of the water molecule allowed us to estimate the very significant amounts of water that exist in any planetary system in formation, but also to address the crucial question of the origin of water (and therefore life) on our own Earth.</blockquote> <div class="p"><!----></div> Chair: Dr Agata Karska <div class="p"><!----></div> </li> <li> /243/ <div class="p"><!----></div> Date: Tuesday 2015.06.02, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Ryszard Tana[</b> <div class="p"><!----></div> Title: <font color="#0000FF">Can Bell s inequalities be violated with classical fields?</font> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> <blockquote><b>Abstract:</b> Recently a number of papers appeared in which the notion of "classical entanglement" and its role in optical processes has been discussed. There are some experimental results already published showing that "classical entanglement" is sufficient to violate Bell s inequalities. This can have important implications for commonly accepted interpretation of some physical phenomena. The talk is aimed to present some of these, still controversial, results.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /242/ <div class="p"><!----></div> Date: Tuesday 2015.05.26, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Nitash Balsara</b> <div class="p"><!----></div> Position: Charles W. Tobias Chair in Electrochemistry <div class="p"><!----></div> Affiliation: Chemical and Biomolecular Engineering, University of California, Berkeley, USA and Lawrence Berkeley National Laboratory <div class="p"><!----></div> Title: <font color="#0000FF">Batteries and Biofuels in the Clean Energy Landscape</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /241/ <div class="p"><!----></div> Date: Wednesday 2015.05.20, 12:00 <div class="p"><!----></div> Speaker: <b>Dr MirosBaw Aabuz </b> <div class="p"><!----></div> Affiliation: WydziaB Matematyczno-Przyrodniczy, Katedra Fizyki Teoretycznej, Uniwersytet Rzeszowski <div class="p"><!----></div> Title: <font color="#0000FF">Internal parity symmetry and degeneracy of Bethe Ansatz strings in the isotropic heptagonal magnetic ring</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The exact Bethe eigenfunctions for the heptagonal ring within the isotropic XXX model exhibit a doubly degenerated energy level in the three-deviation sector at the centre of the Brillouin zone. I will demonstrate an explicit construction of these eigenfunctions by use of algebraic Bethe Ansatz, and point out a relation of degeneracy to parity conservation, applied to the configuration of strings for these eigenfunctions. Namely, the internal structure of the eigenfunctions (the 2-string and the 1-string, with opposite quasimomenta) admits generation of two mutually orthogonal eigenfunctions due to the fact that the strings which differ by their length are distinguishable objects. </blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /240/ <div class="p"><!----></div> Date: Wednesday 2015.05.13, 12:00 <div class="p"><!----></div> Speaker: <b>M.Sc. Tomasz Wasak</b> <div class="p"><!----></div> Affiliation: Katedra Optyki Kwantowej i Fizyki Atomowej, Instytut Fizyki Teoretycznej Uniwersytetu Warszawskiego <div class="p"><!----></div> Title: <font color="#0000FF">Cauchy-Schwarz inequality and particle entanglement</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The creation of ensembles of entangled particles triggered the studies of fundamental aspects of quantum mechanics. The ability to generate non-classical correlations between atoms opened the possibility for their practical applications in non-trivial ways, for example in quantum computation or ultra-precise metrology. However, before the implementation stage, we must first make sure that the entanglement is present in the system, which is often a difficult task. <div class="p"><!----></div> In this seminar I will present the experiments that were conducted to verify existence of non-classical correlations in ultracold atomic systems. Then I provide a simple and experimentally accessible criterion for particle entanglement in many-body systems. This is based on a violation of the Cauchy-Schwarz inequality for the second order correlation function. It applies to any system of identical bosons with either fixed or fluctuating number of particles, provided that there is no coherence between different number states.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /239/ <div class="p"><!----></div> Date: Wednesday 2015.05.06, 12:00 <div class="p"><!----></div> Speaker: <b>Dr PaweB Jakubczyk</b> <div class="p"><!----></div> Affiliation: WydziaB Matematyczno-Przyrodniczy, Katedra Fizyki Teoretycznej, Uniwersytet Rzeszowski <div class="p"><!----></div> Title: <font color="#0000FF">Entanglement of magnons in the Heisenberg XXX chain</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I will present very simple analytical formulas for calculation of multipartite and bipartite entanglement of one-magnon states in quantum spin systems. Regarding the multipartite entanglement I will present formulas for global entanglement and N-concurrence and show that they are mutually related. In the bipartite case, I will give formulas for I-concurrence and negativity, and show that they are also scalable. For one-magnon Schur-Weyl states I will show that the bipartite entanglement structure is completely coded in the corresponding Young tableau.</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /238/ <div class="p"><!----></div> Date: Wednesday 2015.04.29, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Piotr Zniady</b> <div class="p"><!----></div> Affiliation: Faculty of Mathematics and Computer Science, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Joys and sorrows of a quantum computer owner (Rado[ci i smutki z posiadania komputera kwantowego)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Some problems (such as factorization of large numbers into a product of primes) which seem to be difficult for a classical computer turned out to be very simple for a quantum computer. Is it a general pattern or are there some problems which are too difficult even for quantum computers?</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /237/ <div class="p"><!----></div> Date: Tuesday 2015.04.21, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. K. Guslienko</b> <div class="p"><!----></div> Affiliation: Universidad Del Pais Vasco/ Euskal Herriko Unibertsitatea (UPV/EHU), San Sebastian, Spain <div class="p"><!----></div> Title: <font color="#0000FF">Collective vortex excitations in magnetostatically coupled dot clusters</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Low frequency gyrotropic dynamics (100 MHz range) in arrays of the interacting magnetic vortex state dots are considered. The interdot dynamical magnetostatic interactions are accounted in the form of explicit multipole decompositions on the inverse dot center-to-center distance. Particular case of the dot clusters consisting of 3 or 4 laterally placed cylindrical ferromagnetic dots on a nonmagnetic substrate in the form of equilateral triangles or squares is calculated. The eigenfrequencies of collective magnetic vortex oscillations are calculated analytically and compared with recent experiments conducted on the clusters of permalloy dots.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /236/ <div class="p"><!----></div> Date: Tuesday 2015.04.14, 12:00 <div class="p"><!----></div> Speaker: <b>Dr V. Kruglyak</b> <div class="p"><!----></div> Affiliation: University of Exeter, Exeter, UK <div class="p"><!----></div> Title: <font color="#0000FF">Towards graded-index magnonics: Steering spin waves in networks of magnonic waveguides</font> <div class="p"><!----></div> Authors: C. S. Davies,<sup>1</sup> A. Francis,<sup>1</sup> A. V. Sadovnikov,<sup>2</sup> S. V. Chertopalov,<sup>3</sup> M. T. Bryan,<sup>4</sup> S. V. Grishin,<sup>2</sup> D. A. Allwood,<sup>4</sup> S. A. Nikitov,<sup>2,5</sup> Yu. P. Sharaevskii<sup>2</sup>, and V. V. Kruglyak<sup>1</sup> <div class="p"><!----></div> <sup>1</sup>School of Physics, University of Exeter, Stocker road, Exeter, EX4 4QL, United Kingdom<br /> <sup>2</sup>Laboratory "Metamaterials," Saratov State University, Saratov 410012, Russia<br /> <sup>3</sup>Donetsk National University, 24 Universitetskaya Street, Donetsk, 83001, Ukraine<br /> <sup>4</sup>Department of Materials Science and Engineering, University of Sheffield, Sheffield, S1 3JD, United Kingdom<br /> <sup>5</sup>Kotel'nikov Institute of Radioengineering and Electronics, Russian Academy of Science, Moscow 125009, Russia <div class="p"><!----></div> <blockquote><b>Abstract:</b> <a href="seminars/2015Kruglyak.pdf">[PDF]</a>&nbsp; The spin-wave dispersion is inherently complex and anisotropic, depending on both several magnetic parameters of the magnonic medium and the angle between the spin-wave vector and effective magnetic field. We have used time-resolved scanning Kerr microscopy and micromagnetic simulations to study the propagation of spin waves across Permalloy and yttrium-iron-garnet (YIG) waveguides, arranged to form junction structures and biased asymmetrically. We demonstrate that the non-uniformity of the internal magnetic field and magnetization inherent to patterned magnetic structures can create a medium of graded refractive index for propagating magnetostatic waves and can be used to steer their propagation in magnonic architectures. The character of the non-uniformity can be tuned and potentially programmed using the applied magnetic field. Thus, our findings suggest a possibility of a novel reconfigurable computing and / or signal processing technology based on the principles of the graded-index magnonics. <a href="seminars/Kruglyak.pdf">[PDF]</a>&nbsp;</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /235/ <div class="p"><!----></div> Date: Tuesday 2015.03.31, 14:00 <div class="p"><!----></div> Speaker: <b>Prof. Dr Peter Laggner</b> <div class="p"><!----></div> Affiliation: Director of the Nanosystem Solutions Bruker AXS, Karlsruhe, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Advanced Laboratory SAXS Technology. Bruker Instrumentation and Applications</font> <div class="p"><!----></div> <div class="p"><!----></div> Chair: Prof. Maciej Kozak <div class="p"><!----></div> </li> <li> /234/ <div class="p"><!----></div> Date: Wednesday 2015.03.25, 10:00 <div class="p"><!----></div> Speaker: <b>Dr in|. Piotr Ku[wik</b> <div class="p"><!----></div> Affiliation: ZakBad Cienkich Warstw, Instytut Fizyki Molekularnej PAN w Poznaniu <div class="p"><!----></div> Title: <font color="#0000FF">Magnetyczne ukBady cienkowarstwowe o lokalnie modyfikowanych wBa[ciwo[ciach i ich zastosowania</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Magnetyczne ukBady warstwowe i wytwarzane z nich nanostruktury s przedmiotem badaD wielu laboratoriw. Zainteresowanie tymi ukBadami wynika z licznych, ju| zrealizowanych oraz perspektywicznych, zastosowaD. Dotycz one gBwnie technologii informatycznych oraz r|nego typu elementw spintronicznych. Szczeglnie interesujce s takie ukBady warstwowe, w ktrych lokalna modyfikacja wBa[ciwo[ci magnetycznych w pBaszczyznie warstw prowadzi do uzyskania specyficznej struktury magnetycznej, ktrej realizacja w ukBadach jednorodnych nie jest mo|liwa. <div class="p"><!----></div> Omwionych zostanie kilka przykBadw modyfikacji anizotropii lub oddziaBywania w ukBadach warstwowych wykazujcych anizotropi prostopadB (Au/Co/Au, Pt/Co/Pt). Zmiany anizotropii w pBaszczyznie struktur uzyskiwano poprzez wytwarzanie warstw z kontrolowanym gradientem grubo[ci (warstwy klinowe) lub w wyniku bombardowania jonowego. Bombardowanie warstw Au/Co jonami He lub Ar przez maski utworzone z regularnej dwuwymiarowej sieci nanokulek polistyrenowych, pozwoliBo wytworzy jednorodn sie sztucznych domen umieszczonych w matrycy o kontrolowanych wBa[ciwo[ciach magnetycznych [1]. Takie struktury s interesujce ze wzgldu na mo|liwo[ wykorzystania do zapisu informacji. Uzyskanie monotonicznych zmian anizotropii lub oddziaBywania midzywarstwowego pozwala na realizacj procesu przemagnesowania poprzez, kontrolowan jednorodnym polem magnetycznym, propagacj pojedynczej prostej [ciany domenowej [2-3]. Taki kontrolowany ruch [ciany domenowej znajduje szereg potencjalnych zastosowaD np., jako sensory magnetooporowe [3] lub ukBady typu lab-on-a-chip wykorzystujce pole rozproszone nad [ciana domenow do transportu funkcjonalizowanych czstek magnetycznych. <div class="p"><!----></div> [1] P. Ku[wik inni, Nanotechnology 22, 095302 (2011); Nanotechnology 23, 475303 (2012).<br /> [2] M. Urbaniak i inni, Phys. Rev. Lett. 105, 067202 (2010).<br /> [3] M. Matczak i inni, J. Appl. Phys. 114, 093911 (2013); Nanoscale Research Letters 9, 395, (2014); Appl. Phys. Lett. 100, 162402 (2012).</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /233/ <div class="p"><!----></div> Date: Wednesday 2015.02.25, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Anna Kowalewska-KudBaszyk</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Entanglement evolution in nonlinear quantum scissors systems</font> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> <blockquote><b>Abstract:</b> We deal with the models of nonlinear quantum oscillators, described by the Kerr-like nonlinearities. The oscillators can interact with each other and with external environment in various ways. Such models are usually associated with optical nonlinear couplers and discussed in the context of the properties of light they generate [1]. The Kerr-like models discussed here can be treated, under some conditions, as <em> nonlinear quantum scissors</em>, because of their ability to limit substantially the number of states which are essential in the system's dynamics [2,3]. Moreover, this mechanism leads to creation of 2-qubit, 2-qutrit or qutrit-qubit systems for the discussed models. We will present the necessary conditions for creation maximally or almost maximally entangled states within such systems. Additionally, we will present different types of disentanglement in amplitude and phase damping reservoirs. For the models considered here we can observe asymptotic entanglement decay, death or entanglement revival. The conditions for such behavior will be presented. <div class="p"><!----></div> [1] J. Perina Jr., J. Perina, Progr. in Opt. <b>41</b>, 361, (2000).<br /> [2] W.&nbsp;LeoDski and A.&nbsp;Kowalewska-KudBaszyk, Progress in Optics, <b>56</b> 131 (2011).<br /> [3] A.&nbsp;Kowalewska-KudBaszyk and W.&nbsp;LeoDski, JOSA B, <b>31</b>, 1290 (2014).</blockquote> <div class="p"><!----></div> </li> <li> /232/ <div class="p"><!----></div> Date: Wednesday 2015.02.11, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Pavel Balz</b> <div class="p"><!----></div> Affiliation: Polish Academy of Sciences, Institute of Molecular Physics, PoznaD, Poland<br />and A. Mickiewicz University, Faculty of Physics, Division of Mesoscopic Physics, PoznaD, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Spin current assisted magnetization dynamics in exchange coupled magnetic layers</font> <div class="p"><!----></div> Authors: Pavel Balz and Jzef Barna[ <div class="p"><!----></div> <blockquote><b>Abstract:</b> It has been shown experimentally, that when two magnetic layers are separated by a thin nonmagnetic one there is an exchange (RKKY) coupling between the magnetic layers, which oscillates between ferromagnetic and antiferromagnetic types when thickness of the spacing layer is changed [1]. Exchange coupled magnetic layers have a vast range of applications in spintronics with number of advantages over single magnetic layers. In magnetic spin valves they are utilized not just like current polarizers with negligible stray field but also as composite free layers offering novel possibilities of manipulation with magnetic moments by means of spin transfer torque. Thus, in the talk, current-induced switching of composite free layers with antiferromagnetic interlayer coupling shall be reviewed [2]. On the other hand, spin waves in layered magnetic structures have been extensively studied, both experimentally and theoretically, in the 80-ties and 90-ties of the past century [3]. Very recently a possibility of spin current induced spin wave excitation in magnetic insulators have been demonstrated [4]. Therefore, in the second part of the talk, influence of spin pumping and spin current on the spin wave spectra of two exchange coupled ferromagnetic insulators shall be discussed. <div class="p"><!----></div> This work has been carried out within the Project NANOSPIN PSPB-045/2010 supported by a grant from Switzerland through the Swiss Contribution to the enlarged European Union. <div class="p"><!----></div> [1] S. S. P. Parkin, N. More, and K. P. Roche, Phys. Rev. Lett. 64, 2304 (1990).<br /> [2] P. Balz, J. Barna[, Phys. Rev. B 88, 014406 (2013).<br /> [3] M. Vohl, J. Barna[, and P. Grnberg, Phys. Rev. B 39, 12003 (1989); J. Barna[ and P. Grnberg, J. Magn. Magn. Mater. 82, 186 (1989).<br /> [4] Y. Kajiwara et al., Nature 464, 262 (2010).</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /231/ <div class="p"><!----></div> Date: Wednesday 2015.02.4, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Olga Malinkiewicz</b> <div class="p"><!----></div> Affiliation: Saule Technologies Sp. z o.o., Warszawa <div class="p"><!----></div> <div class="p"><!----></div> Title: <font color="#0000FF">Unique properties of halide perovskites</font> <div class="p"><!----></div> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Hybrid organic-inorganic perovskites have been rediscovered recently as great absorbers in solar cells. In these materials the combination of organic and inorganic components leads to a material that is both low-cost, solution processable and an excellent, crystalline semiconductor. Particularly the solar cell efficiency, now close to 20%, has triggered a huge research activity on otherwise rather conventional devices. In this short talk I will try to answer what is the origin of the unique properties of halide perovskites?</blockquote> <div class="p"><!----></div> <blockquote><b>Dodatkowe informacje:</b> Dr Olga Malinkiewicz zajmuje si badaniami nad fotoogniwami perowskitowymi, bdcymi od dwch lat najbardziej obiecujcym materiaBem do konstrukcji nowej generacji baterii sBonecznych. Podczas swojego pobytu na Uniwersytecie w Walencji dr Malinkiewicz odniosBa spektakularny sukces, opracowujc now metod wytwarzania fotoogniw perowskitowych na elastycznym podBo|u i w niskich temperaturach. Odkrycie to, szeroko komentowane w <a href="http://sauletech.com/pl/o-nas/media-o-nas">polskich mediach,</a>&nbsp; zostaBo opublikowane w zeszBym roku w czasopi[mie <a href="http://www.nature.com/nphoton/journal/v8/n2/full/nphoton.2013.341.html">Nature Photonics,</a>&nbsp; a sama autorka uzyskaBa za nie wiele presti|owych wyr|nieD dla mBodych naukowcw. Po powrocie do Polski dr Olga Malinkiewicz zaBo|yBa firm Saule Technologies, ktrej celem jest komercjalizacja elastycznych fotoogniw perowskitowych. <div class="p"><!----></div> Przyjazd dr Olgi Malinkiewicz do Poznania jest zwizany z planami wspBpracy z grup zajmujc si badaniami fotowoltaicznymi na Wydziale Fizyki UAM. Dr Malinkiewicz poszukuje tak|e mBodych, zdolnych osb do prowadzenia badaD nad wytwarzaniem fotoogniw perwoskitowych, dlatego w szczeglny sposb zapraszamy na seminarium studentw oraz doktorantw z fizyki i chemii.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /230/ <div class="p"><!----></div> Date: Wednesday 2015.01.28, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. MichaB KurzyDski</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Do biological molecular machines act as Maxwell's demons?</font> <div class="p"><!----></div> Authors: MichaB KurzyDski and PrzemysBaw CheBminiak <div class="p"><!----></div> <blockquote><b>Abstract:</b> In the intention of its creator, Maxwell's demon was thought to be an intelligent being, able to perform work at the expense of the entropy reduction of a closed operating system. The perplexing notion of the demon's intelligence was formalized in terms of memory and information processing by Szilard and subsequent followers, who pointed out that, in order for the total system to obey the second law of thermodynamics, the entropy reduction should be compensated for by, at least, the same entropy increase, related to the demon's information gain on the operating system's state. A non-informational formulation of the problem was proposed by Smoluchowski and popularized by Feynman as the ratchet and pawl machine, which can operate only in agreement with the second law. A. F. Huxley and consequent followers adopted this way of thinking to suggest numerous thermal ratchet mechanisms for the protein molecular machines' action, but no entropy reduction takes place for these models. More general models of protein dynamics have been put forward with a number of intramolecular states organized in a network of stochastic transitions. Here, the computer model of such a network is investigated, displaying, like networks of the systems biology, a transition from the fractal organization on a small length-scale to the small-world organization on the large length-scale. This model, when allowing work performance in a variety of ways, obeys the generalized fluctuation theorem with entropy reduction and is able to explain a surprising observation to Yanagida and co-workers that the myosin II head can take several steps along the actin filament per ATP molecule hydrolysed. From a broader perspective, the supposition that (i) a similar mechanism of action is characteristic for most intrinsically disordered proteins and (ii) this is the reason for most protein machines to operate as dimers or higher organized structures could be of especial importance.</blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /229/ <div class="p"><!----></div> Date: Wednesday 2015.01.21, 12:00 <div class="p"><!----></div> Speaker: <b>M.Sc., Eng. BartBomiej Streszewski</b> <div class="p"><!----></div> Affiliation: Faculty of Nonferrous Metals, AGH University of Science and Technology in Krakw <div class="p"><!----></div> Title: <font color="#0000FF">Kinetics of gold nanoparticles formation in aqueous and microemulsion systems</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This work presents the results of kinetic measurements of the Au(III) chloride complex ions reduction with hydrazine and of the gold nanoparticles formation in aqueous solution and in microemulsion system of H<sub>2</sub>O/CTAB/alcohol/hexane. The dynamics of the gold nanoparticles formation in aqueous solution was studied using UV-Vis spectrophotometry, DLS and TEM methods. Nucleation and autocatalytic growth rate constants were determined by using the modified Finke Watzky model. The TEM measurements and hydrodynamic radius time evolution have revealed that the nanoparticles are unstable and grow until they reach a submicron size. The growth is triggered by the autocatalytic reduction of Au(I) ions on the surface of the growing particle and aggregation followed by chemical reaction limited by the Ostwald repining. Stabilization of gold nanoparticles can be provided by conducting their synthesis in reverse micelles. During the synthesis micelles act as nanoreactors and soft templates for the growing particles. The influence of the molar ratios: w = n<sub>H2O</sub>:n<sub>CTAB</sub> and p = n<sub>alc</sub>:n<sub>CTAB</sub> of the Au(III) ion initial concentration and the presence of different alcohols (butanol, pentanol, hexanol or heptanol) as cosurfactants on the formation kinetics and the nanoparticle morphology were studied. The particles with the smallest polydispersity are formed at a low Au(III) ion concentration and at for low w parameter or in the presence of alcohols with longer hydrocarbon chain. The particle growth is limited by the diffusion of the monomers between the micelles, which can be caused by a low Au(III) ion occupancy per a single micelle and/or a slow intermicellar exchange rate. </blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /228/ <div class="p"><!----></div> Date: Wednesday 2015.01.14, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Ryszard Krzyminiewski</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki Medycznej UAM <div class="p"><!----></div> Title: <font color="#0000FF">Terapia protonowa</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Przedstawiony zostanie wpByw promieniowania jonizujcego na tkank biologiczn i jego wykorzystanie w podstawowej radioterapii nowotworw. Omwione bd sposoby generowania strumienia protonw oraz zalety i wady zastosowania wizki protonw w leczeniu nowotworw. Pokazane zostan przykBady o[rodkw medycznych w Szwajcarii, Niemczech i Polsce stosujcych w praktyce klinicznej terapi protonow. Zaprezentowane zostan wBasne wstpne wyniki badaD wpBywu wizki protonowej na nanoleki stosowane w terapii nowotworw. </blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /227/ <div class="p"><!----></div> Date: Wednesday 2014.12.17, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Jan ChwedeDczuk</b> <div class="p"><!----></div> Affiliation: Katedra Optyki Kwantowej i Fizyki Atomowej, Instytut Fizyki Teoretycznej Uniwersytetu Warszawskiego <div class="p"><!----></div> Title: <font color="#0000FF">Interferometry with independently prepared Bose-Einstein condensates</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Whenever the value of an unknown parameter &#952; is extracted from a series of experiments, the result is inevitably burdened by the uncertainty &#8710;&#952;. If the system, which is the subject of measurement consists of unentangled particles, this uncertainty is bounded by the shot-noise limit. To overcome this limitation, it is necessary to use a properly entangled state, which is usually prepared in a dedicated procedure. We show that quantum correlations arising from the indistinguishability of bosons are a sufficient resource for the sub-shot-noise interferometry. To this end, we consider an interferometer, which operates on two independently prepared Bose-Einstein condensates with fluctuating numbers of particles. We calculate the sensitivity obtained from the measurement of the number of atoms and compare it with the ultimate achievable bound. Our main conclusion is that even in presence of major atom number fluctuations, an interferometer operating on two independent condensates can give very high precision. These observations indicate a new possibility for an interferometer operating below the shot-noise limit.</blockquote> <div class="p"><!----></div> </li> <li> /226/ <div class="p"><!----></div> Date: Wednesday 2014.12.10 at 13:00 <div class="p"><!----></div> Speaker: <b>M.Sc. Krzysztof Wjcik</b> <div class="p"><!----></div> Affiliation: Mesoscopic Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Transport properties of T-shaped double quantum dots</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In my presentation I will mention transport properties of two quantum dots, coupled to two leads in, so called, T-shaped configuration. This mean, that one of the dots is embedded between the leads, while the second is not directly coupled to the leads, but coupled to the first dot. We restrict ourselves to the linear response regime. Nevertheless, the physics of such a system is still very reach and includes the two-stage Kondo effect (the conductance is enhanced below the Kondo temperature, but becomes suppressed at even lower temperatures) and Fano-like interference effects, resulting in a sharp dip in the conductance vs. gate voltage dependence. Moreover, both effects are strongly influenced by the presence of magnetism: either in the form of magnetic field, or encapsulated in ferromagnetic leads. In particular, the second stage of the Kondo effect can be suppressed (that is, the usual Kondo effect restored), and a perfect spin polarization of the conductance can be obtained due to the spin-dependent Fano anti-resonance condition. I will explain these effects, with stress put on the case of ferromagnetic leads (results were obtained with I. Weymann, ZFMezo, UAM). To resolve properly all the many-body correlations, we employed the Numerical Renormalization Group method.</blockquote> <div class="p"><!----></div> </li> <li> /225/ <div class="p"><!----></div> Date: Thursday 2014.11.27, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Tomasz Paterek</b> <div class="p"><!----></div> Affiliations:<br />1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanynag Technological University, Singapore<br />2. Centre for Quantum Technologies, National University of Singapore <div class="p"><!----></div> Title: <font color="#0000FF">Physics research and studies at Singapore s NTU</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This talk will be devoted to physics research and facilities at Nanyang Technological University (NTU) in Singapore and stipends it offers to undergraduate students (internships) and PhD students. I hope this will be of interest to faculty members who would like to collaborate with Singapore's scientists as well as students who would like to pursue their postgraduate career at NTU.</blockquote> <div class="p"><!----></div> Chair: Prof. Antoni Wjcik <div class="p"><!----></div> </li> <li> /224/ <div class="p"><!----></div> Date: Wednesday 2014.11.26, 12:00 <div class="p"><!----></div> Speaker: <b>Dr Tomasz Paterek</b> <div class="p"><!----></div> Affiliations:<br />1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanynag Technological University, Singapore<br />2. Centre for Quantum Technologies, National University of Singapore <div class="p"><!----></div> Title: <font color="#0000FF">Quantum biology</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> With growing evidence of quantum effects in more and more complex systems it becomes legitimate to ask if alive matter can be influenced or take advantage of quantum features. Such questions are studied in a newly emerging field of quantum biology. Two examples will be discussed in more detail where quantum coherence may play a role to speed up biologically relevant process (photosynthesis) or even enable it (magneto-reception). Finally, I will describe our planned experiments on insects and how they are related to quantum biology.</blockquote> <div class="p"><!----></div> </li> <li> /223/ <div class="p"><!----></div> Date: Thursday 2014.10.23 <div class="p"><!----></div> Speaker: <b>Dr Jacek Gsiorowski</b> <div class="p"><!----></div> Affiliation: Semiconductor Physics, Technische Univeristt Chemnitz, 09107 Chemnitz, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Organic semiconductors - from light harvesting to solar fuels</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> During the past two decades thin film photovoltaic cells based on solution processable organic semiconductors attracted much attention as possible cheap energy harvesting systems. They are envisaged as feasible alternative to conventional inorganic technologies. One great advantage of the organic photovoltaic is that their morphological and photophysical properties can be easily modified by tailoring the molecular structure. Therefore, a great effort is made for the synthesis and characterization of new organic materials, small molecules and polymers. Another big advantage of the organic semiconductors is their mechanical flexibility. Optimisation of the polymer molecules from the fundamental core of this push-pull polymer have since gone on to produce single junction organic photovoltaic device with power conversion efficiency of 9%. The rapid increase in the light harvesting efficiency was also followed by the approaches in using solar energy for application in chemical reduction. Here, a particularly interesting approach is to use solar energy for the chemical and electrochemical reduction of CO<sub>2</sub> to hydrocarbons as well as for the artificial photosynthesis.</blockquote> <div class="p"><!----></div> Chair: Prof. MaBgorzata ZliwiDska-Bartkowiak <div class="p"><!----></div> </li> <li> /222/ <div class="p"><!----></div> Date: Thursday 2014.10.23 <div class="p"><!----></div> Speaker: <b>Prof. Dr Georgeta Salvan</b> <div class="p"><!----></div> Affiliation: Semiconductor Physics, Technische Univeristt Chemnitz, 09107 Chemnitz, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Magneto-optical Kerr Effect Spectroscopy of Organic/Ferromagnetic Heterostructures </font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Phthalocyanines and porphyrins find nowadays a variety of applications from pigments to organic electronics and, more recently, spintronics. This diversity of application potential stems from the large flexibility of their molecular structure. We focus on the room temperature magneto-optical activity of phthalocyanines and porphyrins deposited on ferromagnetic substrates (Co, Ni, and LSMO) as model heterostructures for organic spintronics. The magnetic properties of the heterostructures are assessed by magneto-optical Kerr effect (MOKE) magnetometry. Variable angle spectroscopic ellipsometry (VASE) in combination with MOKE spectroscopy investigations are performed to extract the (magneto-) optical properties of the heterostructures. From the degree of anisotropy of the optical constants the molecular orientation can be determined. This allows to systematically investigate the influence of the substrate magnetization direction onto the molecular arrangement.</blockquote> <div class="p"><!----></div> Chair: Prof. MaBgorzata ZliwiDska-Bartkowiak <div class="p"><!----></div> </li> <li> /221/ <div class="p"><!----></div> Date: Wednesday 2014.10.8, 12:00 <div class="p"><!----></div> Speaker: <b>M.Sc. MichaB Mruczkiewicz</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki NanomateriaBw, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Particular Properties of Spin Waves in Magnonic Crystals: Negative Refractive Index, Nonreciprocity and Damping</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I am presenting the results of investigation of spin wave properties in periodic ferromagnetic structures (one-dimensional magnonic crystals). The main attention of research was put on development of numerical methods and analysis of spin waves properties that are important for designing a functional device. Three subjects of spin waves properties were studied and they can be classified as: i) influence of damping on standing spin wave formation ii) metamaterial properties for electromagnetic waves propagating through magnonic crystal and iii) nonreciprocal dispersion of spin waves. In particular I have shown the analysis of the influence of the damping factor on the spectrum of ferromagnetic resonance, the influence of metallic overlayer on the damping, influence of structural parameters of magnonic crystals on the magnetic permeability function of metamaterial based on the crystal. I have also presented a detailed analysis of symmetry breaking of the dispersion relation of spin waves propagating in the ferromagnetic films in contact with metal. The numerical calculation were confronted with measured data, when available, and agreement between them was shown.</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /220/ <div class="p"><!----></div> Date: Monday 2014.09.1 <div class="p"><!----></div> Speaker: <b>Dr BartBomiej Graczykowski</b> <div class="p"><!----></div> Affiliation: Phononic and Photonic Nanostructures Group, Catalan Institute of Nanotechnology and Nanoscience (ICN2), Campus de la UAB - Edifici ICN2, 08193-Bellaterra (Barcelona), Spain <div class="p"><!----></div> Title: <font color="#0000FF">Acoustic phonon propagation in Si membranes and nanostructures</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Studies on the phonon engineering have been gaining importance in recent 20 yr. Previous research has shown that phonon dispersion relation can be significantly modified by means of phononic crystals (PnCs) [1-3], spatial confinement [4-5], or external stress field [6-7]. Phononic crystals are in general materials with one- (1D), two-, or three-dimensional periodicity in their elastic properties. PnCs exhibit the modification of the phonon dispersion and possible complete frequency band gaps due to Bragg reflections or/and local resonances, which can be controlled by geometry and material properties. Another approach to modify the phonon dispersion relies on spatial confinement. Here, the dynamic behaviour at reduced characteristic dimensions has been found to be completely different than for bulk materials. I will report on experimental (Brillouin light scattering) and theoretical (finite element method) evidence of both phononic properties (zone folding, band gap and local resonance) and phonon confinement in one-dimensional Si surface PnCs and two-dimensional Si membrane based PnCs. Additionally, I will discuss the influence of the phononic patterning and phonon confinement on thermal properties (Raman thermometry) and potential applications of PnCs in thermoelectric devices. <div class="p"><!----></div> [1] N. Gomopoulos, D. Maschke, C. Y. Koh, E. L. Thomas, W. Tremel, H.-J. Butt, and G. Fytas, Nano Lett. 10, 980 (2010).<br /> [2] B. Graczykowski, S. Mielcarek, A. Trzaskowska, J. Sarkar, P. Hakonen, and B. Mroz, Phys. Rev. B 86, 085426 (2012).<br /> [3] B. Graczykowski, M. Sledzinska, N. Kehagias, F. Alzina, J. S. Reparaz, C. M. Sotomayor Torres, APL 104, 123108 (2014).<br /> [4] V. A. Fonoberov and A. A. Balandin, Nano Lett. 5, 1920 (2005).<br /> [5] J. Cuffe, E. Chvez, A. Shchepetov, P.-O. Chapuis, E. H. El Boudouti, F. Alzina, T. Kehoe, J. Gomis-Bresco, D. Dudek, Y. Pennec, B. Djafari-Rouhani, M. Prunnila, J. Ahopelto, and C. M. Sotomayor Torres, Nano Lett. 12, 3569 (2012).<br /> [6] A. Alofi and G. P. Srivastava, Phys. Rev. B 87, 115421 (2013).<br /> [7] B. Graczykowski, J. Gomis-Bresco, F. Alzina, J. S. Reparaz, A Shchepetov, M Prunnila, J Ahopelto, C.M. Sotomayor Torres, New J. Phys. 16, 073024 (2014).</blockquote> <div class="p"><!----></div> Chair: Prof. Maciej Krawczyk <div class="p"><!----></div> </li> <li> /219/ <div class="p"><!----></div> Date: Wednesday 2014.07.02 <div class="p"><!----></div> Speaker: <b>Prof. Maciej Kozak</b> <div class="p"><!----></div> Title: <font color="#0000FF">Time-resolved SAXS studies of human cystatin C - first observation of radiation induced domain swapping </font> <div class="p"><!----></div> Authors: Maciej Kozak<sup>1</sup>, MichaB Taube<sup>1</sup>, Magdalena Murawska<sup>1</sup>, Aneta Szymanska<sup>2</sup>, Anders Grubb<sup>3</sup> <div class="p"><!----></div> <sup>1</sup>Department of Macromolecular Physics, Faculty of Physics, Adam Mickiewicz University, Poznan, Poland<br /> <sup>2</sup>Department of Medicinal Chemistry, Faculty of Chemistry, University of GdaDsk, GdaDsk, Poland<br /> <sup>3</sup>Department of Clinical Chemistry, Lund University, Lund, Sweden <div class="p"><!----></div> <blockquote><b>Abstract:</b> Damaging effects of synchrotron radiation were observed for the wide range of biological samples, ranging from protein crystals to biological cells and tissues [1,2]. Most often these damages were manifested as radiolysis of the tested molecules. However, so far were not observed any conformational changes (such as domain swapping) in the protein structures induced by the synchrotron radiation. <div class="p"><!----></div> The aim of this study was to observe the early stages of dimerization of human cystatin C (HCC) via the domain swapping mechanism. The time-resolved small angle scattering experiments were performed using synchrotron radiation on P12 BioSAXS beam line with very short acquisition time (50 ms) at PETRA III synchrotron (DESY Hamburg). Solution scattering data were subjected to detailed analysis by using SVD methods and MCR-ALS as well as the shape determination. Besides the monomeric forms of human cystatin C, also fractions of dimers and higher oligomeric forms of HCC formed even after 50-ms exposure were identified. In addition we showed directly for first time that the formation of human cystatin C oligomers and fibryls was directly preceded by the formation of domain swapped dimer. <div class="p"><!----></div> [1] Borek, D.; Dauter, Z.; Otwinowski, Z. (2013) J. Synchr. Rad. 20, 37-48.<br /> [2] Chen, Heyu; He, Xin; Sheng, Caibin; Ma, Yingxin; Nie, Hui; Xia, Weiliang; Ying, Weihai (2011) Int. J. Physiol. Patophysiol. Pharmacol. 3, 243-248.</blockquote> <div class="p"><!----></div> Chair: Prof. MichaB Banaszak <div class="p"><!----></div> </li> <li> /218/ <div class="p"><!----></div> Date: Tuesday 2014.07.01 <div class="p"><!----></div> Speaker: <b>Prof. Maciej Radosz</b> <div class="p"><!----></div> Affiliation: Soft Materials Laboratory, University of Wyoming, U.S.A. <div class="p"><!----></div> Title: <font color="#0000FF">Multiblock micelle and dendrimer carriers for cancer drugs</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Toxic hydrophobic drugs can be delivered to cancer tissue using benign nano-sized carriers made of block copolymers, dendrimers, or dendrimer-in-liposome particles. Polymeric carriers prepared via micellization in non-aqueous near-critical solvents, referred to as Near-Critical Micellization, have been demonstrated to lead to a much higher drug loading, by as much as a factor of three and to inhibit its premature release. This will be illustrated with examples for PEG-b-PLLA-b-PCL nanoparticles loaded with a model cancer drug paclitaxel. Such triblock nanoparticles are found to be not only solvent-free and paclitaxel-rich, which reduces the body exposure to the excipients, but also nearly burst-release-free, which enhances their therapeutic efficacy. Dendrimer-in-liposome carriers, in turn, provide a unique opportunity to address two other, seemingly contradictory drug-delivery requirements, namely a large size and hence good stability while in circulation but small size and hence rapid diffusion while penetrating the tumor tissue.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM MichaB Banaszak <div class="p"><!----></div> </li> <li> /217/ <div class="p"><!----></div> Date: Wednesday 2014.06.18 <div class="p"><!----></div> Speaker: <b>Dr Artur BarasiDski</b> <div class="p"><!----></div> Affiliation: Institute of Physics, University of Zielona Gra <div class="p"><!----></div> Title: <font color="#0000FF">Generation of maximally entangled states in optical supperlattices</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We discuss a model with ultra-cold atoms confined in optical superlattices. In particular, we study the ground-state properties of our system. Applying model involving spin-1 bosons trapped in a double-well potential, we quantify the bipartite entanglement between particles. Depending on the external magnetic field and biquadratic interactions different phases of magnetic order are realized and hence, various phases of the system's entanglement. We show that changing the values of the parameters determining superlattices, we can switch the system among various maximally entangled states. What is important, our model seems to be a good candidate for practical realization of the device which can be a switchable tool for generation on demand of such a states. <div class="p"><!----></div> [1] A. BarasiDski, W. LeoDski, T. SowiDski, to appear in JOSA B (2014).</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /216/ <div class="p"><!----></div> Date: Wednesday 2014.06.11 <div class="p"><!----></div> Speakers: <b>Prof. BogusBaw Mrz</b> and <b>M.Sc. Piotr Graczyk</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki KrysztaBw, WF UAM <div class="p"><!----></div> Title: <font color="#0000FF">On the strong elasto-magnetic coupling in ferromagnetic thin film sputtered onto ferroelastic substrate </font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The influence of substrate ferroelastic phase transition on the magnetization of ferromagnetic thin film was investigated. Two different ferroic materials have been used: ferroelastic/ferroelectric Gd<sub>2</sub>(MoO<sub>4</sub>)<sub>2</sub> and pure ferroelastic LiCsSO<sub>4</sub> as a substrates. A nickel and permalloy thin films, with the different thickness from 10 to 100 nm were used. <div class="p"><!----></div> Our measurements showed strong magnetization change at Curie point, which reflect the temperature changes of spontaneous deformation of the samples. <div class="p"><!----></div> A strain-driven spin reorientation transitions were described theoretically using a magnetic domain theory. It was shown that magnetization reorientations occurs due to magnetoelastic contribution to free energy and thus affect total magnetization value of a sample. Results of our simulations were found to be in good agreement with the experiments. <div class="p"><!----></div> The preliminary results of Brillouin scattering on spin waves propagating in our samples will be shown.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /215/ <div class="p"><!----></div> Date: Wednesday 2014.06.11 <div class="p"><!----></div> Speaker: <b>Dr MieczysBaw TorchaBa</b> <div class="p"><!----></div> Affiliation: Biomolecular Modelling Laboratory, Cancer Research UK London Research Institute, 44 Lincoln s Inn Fields, London WC2A 3LY, UK <div class="p"><!----></div> Title: <font color="#0000FF">Studying protein-protein binding funnels with SwarmDock Server and RaTrav</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Protein-protein interactions drive many of the biological functions of the cell. Any two proteins have the potential to interact; however, whether the interactions are of biological significance is dependent on a number of complicated factors. Thus, modelling the three-dimensional structure of protein-protein complexes is still considered to be a complex endeavour. In addition to correct protein-protein complex 3D structure returned by the algorithm, equally important is dynamics of binding, i.e., how proteins find their binding partners in the multidimensional space of conformational transitions and how their binding partners, upon complex formation, sample binding funnels, i.e. what is the structure of conformational states space and in which manner proteins change their conformations when traversing this network. We recently released two freely available tools: SwarmDock Server (a web service for the flexible modelling of protein-protein complexes) [1] and RaTrav (a tool for calculating mean first-passage times) [2]. In this talk we share our experience related to conformational state network generation, its structure and dynamics. We successfully applied occupancy probabilities to distinguish between false positive and true positive protein-protein binding funnels [3]and mean first-passage times to find the favourable path and limiting transitions in the true positive protein-protein binding funnel [2]. <div class="p"><!----></div> [1] M. Torchala, I.H. Moal, R.A.G. Chaleil, J. Fernandez-Recio, P.A. Bates, 'SwarmDock: a server for flexible protein-protein docking', Bioinformatics 29, 807-809 (2013).<br /> [2] M. Torchala, P. Chelminiak, M. Kurzynski, P.A. Bates, 'RaTrav: a tool for calculating mean first-passage times on biochemical networks', BMC Syst. Biol. 7, 130 (2013).<br /> [3] M. Torchala, I.H. Moal, R.A.G. Chaleil, R. Agius, P.A. Bates, 'A Markov-chain model description of binding funnels to enhance the ranking of docked solutions', Proteins: Structure, Function, and Bioinformatics 81, 2143-2149 (2013).</blockquote> <div class="p"><!----></div> Chair: dr PrzemysBaw CheBminiak <div class="p"><!----></div> </li> <li> /214/ <div class="p"><!----></div> Date: Tuesday 2014.06.10 <div class="p"><!----></div> <div class="p"><!----></div> Speaker: <b>M.Sc. MikoBaj Lasota</b> <div class="p"><!----></div> Affiliation: Faculty of Physics, Astronomy and Applied Informatics, Nicolaus Copernicus University, ToruD <div class="p"><!----></div> Title: <font color="#0000FF">Elementary linear optics quantum repeater links with realistic single photon sources</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I study operation of realistic elementary quantum repeater links constructed using multiple single photon sources, quantum memories, linear optics, and heralding detectors. Two schemes are considered. The first one is the well established one-photon scheme which produces a photon in a delocalized superposition state between two quantum repeater nodes, each of them fed with one single photon at the input. The second one is a linear optics analog of the robust scheme based on interfering two Stokes photons emitted by atomic ensembles, which does not require phase stability between the repeater nodes. Imperfect photon sources are assumed, generating outputs with both vacuum and multiphoton contributions. I find conditions for the source photon statistics that guarantee generation of entanglement in the relevant qubit subspaces and compare it with classicality criteria. I also quantify the amount of entanglement that can be produced with imperfect single photon sources, optimized over setup parameters, using as a measure entanglement of formation. Finally, I discuss verification of the generated entanglement by testing Bell's inequalities.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /213/ <div class="p"><!----></div> Date: Monday 2013.06.09 <div class="p"><!----></div> Speaker: <b>Prof. Keith E. Gubbins</b> <div class="p"><!----></div> Affiliation: Department of Chemical &amp; Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, U.S.A. <div class="p"><!----></div> Title: <font color="#0000FF">Wetting at the Nano-Scale</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> At the macro-scale the extent to which a liquid wets a solid substrate is usually described in terms of the contact angle, &#952;<sub>c</sub>, and the surface tensions involved. Depending on the liquid and substrate, the system is described as amphiphilic ('wetting', &#952;<sub>c</sub> &lt; 90<sup>o</sup>) or amphiphobic ('non-wetting', &#952;<sub>c</sub> &gt; 90<sup>o</sup>). Such a description has a number of limitations; in particular, it breaks down for sufficiently small nano-scale systems, and is limited to describing liquid, as opposed to gaseous or solid, adsorbed films. At a more fundamental level, wetting is determined by the competition between the adsorbate-substrate intermolecular forces and the adsorbate-adsorbate forces. Through a corresponding states analysis of the statistical mechanical description of such wetting systems it is possible to define a microscopic wetting parameter, a<sub>w</sub>, that is a measure of wetting that applies at all scales and for any kind of adsorbed film (gas, liquid or solid) [1,2]. <div class="p"><!----></div> We illustrate the usefulness of this wetting parameter by considering the properties of a nano-phase confined within a porous material. In this case the dimensionless pore width, pore shape and wetting characteristics of the confined phase are of particular importance. Examples drawn from both experiment and molecular simulation studies will be presented for phase separations, selective adsorption in the case of mixtures, and pressure enhancement, with emphasis on simple pore geometries. These examples illustrate the central role played by wetting, and also the breakdown of some concepts and macroscopic laws, such as Gibbs' surface thermodynamics for nano-phases confined within small pores. <div class="p"><!----></div> [1] R. Radhakrishnan, K.E. Gubbins and M. ZliwiDska-Bartkowiak, "Global Phase Diagrams for Freezing in Porous Media", Journal of Chemical Physics, 116, 1147-1155 (2002).<br /> [2] Keith E. Gubbins, Yun Long and MaBgorzata ZliwiDska-Bartkowiak, "Thermodynamics of Confined Nano-Phases", Journal of Chemical Thermodynamics, 74, 169-183 (2014).</blockquote> <div class="p"><!----></div> Chair: Prof. MaBgorzata ZliwiDska-Bartkowiak <div class="p"><!----></div> </li> <li> /212/ <div class="p"><!----></div> Date: Wednesday 2014.06.4 <div class="p"><!----></div> Speaker: <b>Dr MirosBaw Aabuz</b> <div class="p"><!----></div> Affiliation: Department of Theoretical Physics, Faculty of Mathematics and Natural Sciences, University of Rzeszw, Pigonia 1, 35-310 Rzeszw <div class="p"><!----></div> Title: <font color="#0000FF">String hypothesis for short Heisenberg magnets</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> It is well known, that exact Bethe Ansatz solutions for the Heisenberg eigenproblem of a linear magnetic chain base upon the hypothesis of strings. This hypothesis is presumed to work in the thermodynamic limit N&#8594;&#8734;, but it works pretty well also in the finite case. I present some details of analysis performed for short magnetic chains. In particular, I exploit Galois symmetry associated with the secular eigenproblem in determining rigged string configurations.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /211/ <div class="p"><!----></div> Date: Thursday 2014.05.29 <div class="p"><!----></div> Speaker: <b>B.Sc. Justyna Aodyga</b> <div class="p"><!----></div> Affiliation: ZakBad Elektroniki Kwantowej, WF UAM <div class="p"><!----></div> Title: <font color="#0000FF">Simple single-shot protocol for encoding and decoding an unknown qubit state into various topological codes</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I present a general scheme for encoding and decoding an unknown qubit state into various topological codes for quantum error correction. I illustrate this method by means of Kitaev planar code, where qubits are arranged in a two-dimensional array on a surface of nontrivial topology. I also show that in the noisy scenario (when state preparation and measurements are faulty) an analytical bound for the fidelity of a quantum communication can be easily provided following the scheme and is of order of noise acting on a single physical qubit, in a large code size limit.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /210/ <div class="p"><!----></div> Date: Wednesday 2014.05.28 <div class="p"><!----></div> Speaker: <b>B.Sc. Justyna Aodyga</b> <div class="p"><!----></div> Affiliation: ZakBad Elektroniki Kwantowej, WF UAM <div class="p"><!----></div> Title: <font color="#0000FF">Introduction to quantum error correction codes</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Protecting quantum information from errors due to decoherence and other quantum noise is crucial for fault-tolerant quantum computation. In order to do quantum information processing reliably in the presence of noise, the theory of error-correcting codes has been developed. These codes work by encoding quantum states in a special way that make them resilient against the effects of noise, and then decoding when it is wished to recover the original state. I start my presentation with comprehensive introduction to quantum error correction theory. Then, I carry on with short description of topological quantum error-correcting codes, an important class of quantum codes.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /209/ <div class="p"><!----></div> Date: Thursday 2014.05.22 <div class="p"><!----></div> <div class="p"><!----></div> Speaker: <b>Dr Andrii Chumak</b> <div class="p"><!----></div> Affiliation: Fachbereich Physik and Forschungszentrum OPTIMAS, Technische Universitt Kaiserslautern, 67663 Kaiserslautern, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Magnons as an alternative to a charge current</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> With conventional CMOS technology data is carried by flows of electrons that generate heat which is responsible for the device's power consumption. An alternative to this principle is the employment of other particles or quasi-particles as information carriers which are subject to dissipation to a lesser degree than electrons. I will show that eigen excitations of magnetic media - magnons can be used for this role. <div class="p"><!----></div> In my talk, after an introduction on spin waves and their quanta magnons, I will concentrate on the artificial magnetic materials with periodically-modulated magnetic properties - magnonic crystals. Several different designs of macro- and micro-scaled magnonic crystals will be discussed [1-3]. In the second part of the talk, the magnon-based data processing elements will be shown: time reverser of microwave pulses [4] and magnon transistor. These proof of concept devices are made out of an insulator in order to exclude any motion of free electrons and are based on magnonic crystals. The time reverser is based on a dynamic magnonic crystal: a crystal with properties that can be varied using external controls on a very fast time scale. We have shown that a wave packet, while being reflected by the dynamic crystal, reverses its time profile [4]. The magnon transistor is the device operational principle of which is based on the control of magnons by magnons. It was realized through an enhancement of nonlinear magnon interactions in a magnonic crystal. We have shown that the transistor allows for the design of all-magnon logic gates as well as for enhancement of magnonic signals. The final part of the talk will be devoted to the miniaturization issues of the insulator-based magnonics. Very recently we have studied spin-wave excitation and propagation in an insulator yttrium-iron-garnet spin-wave waveguide of micrometer sizes [5]. These results represent a valid step towards the nano-scaled particle-less technology in which information is carried and processed by magnons rather than by electrons. <div class="p"><!----></div> [1] A.V. Chumak, et al., Phys. Rev. Lett. 108, 257207 (2012).<br /> [2] A.V. Chumak, et al., Appl. Phys. Lett. 95, 262508 (2009).<br /> [3] B. Obry, et al., Appl. Phys. Lett. 102, 202403 (2013).<br /> [4] A.V. Chumak, et al., Nat. Commun. 1:141 doi: 10.1038/ncomms1142 (2010).<br /> [5] P. Pirro, et al., Appl. Phys. Lett. 104, 012402 (2014).</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /208/ <div class="p"><!----></div> Date: Tuesday 2014.05.20 <div class="p"><!----></div> Speaker: <b>Prof. Nobuyuki Imoto</b> <div class="p"><!----></div> Affiliation: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Osaka, Japan <div class="p"><!----></div> Title: <font color="#0000FF">Two-state formalism</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> A procedure to obtain the expectation value of an arbitrary observable is referred to as "state." Usually, such "state" has one-to-one correspondence to the quantum state of the physical system. In some cases, however, we know not only the prepared quantum state but also the post-selected state, which we actually see. If we estimate the measurement result performed by the third party intermediately, such mathematical "state" contains two physical states: initial and final states. Sometimes, we can precisely estimate the value of the conjugate observables regardless with his/her choice [1]. The "state" of course depends on the measurement, but the expression becomes simple for the weak measurement and strong measurement. For the weak measurement, it becomes the weak value [2], which exhibits interesting properties in paradoxical situations [3,4]. <div class="p"><!----></div> [1] K. Shimizu, et. al.: Phys. Rev. A 84, 022308 (2011).<br /> [2] Y. Aharonov, et. al.: Phys. Rev. Lett. 60, 1351 (1988).<br /> [3] Y. Aharonov, et. al.: Phys. Lett. A 301, 130 (2002).<br /> [4] J. S. Lundeen and A. M. Steinberg, Phys. Rev. Lett. 102, 020404 (2009);<br /> &nbsp;&nbsp;&nbsp; K. Yokota et. al., New J. Phys. 11, 033011 (2009).</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /207/ <div class="p"><!----></div> Date: Thursday 2014.05.15 <div class="p"><!----></div> Speaker: <b>Dr Karol ZaBski</b> <div class="p"><!----></div> Affiliation: Centrum NanoBioMedyczne UAM <div class="p"><!----></div> Title: <font color="#0000FF">Properties of magnetic Heusler alloys - experimental and theoretical approach (part II)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Heusler alloys are a class of materials with diverse physical properties and many potential applications. Depending on their specific composition they can exhibit half-metallic ferromagnetism (full spin polarization at the Fermi level), magnetic shape memory (martensitic transformation in a ferromagnetic state), among others. The Heusler alloys Ni-Mn-Sn belong to a family of magnetic shape memory alloys. This magnetostructural transformation leads to magnetocaloric effect, modification of exchange coupling, large magnetoresistance, etc. The comprehensive experimental investigation of magnetic, transport and structural properties of Ni-Mn-Sn thin films was undertaken as well as ab initio calculations. It was shown that the local atomic configuration affects on magnetic properties. The estimated values of the martensitic transformation temperature and Curie (Nel) temperature were collected in the form of phase diagram.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /206/ <div class="p"><!----></div> Date: Wednesday 2014.05.14, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. Genowefa Zlsarek</b> <div class="p"><!----></div> Affiliation: ZakBad Biofizyki Molekularnej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Denaturacja i agregacja biaBek (Denaturation and aggregation of proteins)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Z chwil, gdy rozwinBy si badania nad przyczyn chorb wywoBanych przez amyloidy, rozbudowane zostaBy rwnie| badania podstawowe dotyczce procesu agregacji biaBek. Wykazano szybko, |e proces agregacji wystpuje stosunkowo czsto i generalnie mo|e to by proces odwracalny (w niektrych przypadkach in vivo) lub nieodwracalny (tak|e w szczeglnych przypadkach zmian fizjologicznych). Powstajce agregaty maj czsto form uporzdkowanych, regularnych struktur. Wykazano tak|e, |e proces agregacji [ci[le wi|e si z denaturacj czsteczek biaBkowych.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM MichaB Banaszak <div class="p"><!----></div> </li> <li> /205/ <div class="p"><!----></div> Date: Thursday 2014.05.8 <div class="p"><!----></div> Speaker: <b>Dr Karol ZaBski</b> <div class="p"><!----></div> Affiliation: Centrum NanoBioMedyczne UAM <div class="p"><!----></div> Title: <font color="#0000FF">Properties of magnetic Heusler alloys - experimental and theoretical approach (part I)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Heusler alloys are a class of materials with diverse physical properties and many potential applications. Depending on their specific composition they can exhibit half-metallic ferromagnetism (full spin polarization at the Fermi level), magnetic shape memory (martensitic transformation in a ferromagnetic state), among others. The Heusler alloys Ni-Mn-Sn belong to a family of magnetic shape memory alloys. This magnetostructural transformation leads to magnetocaloric effect, modification of exchange coupling, large magnetoresistance, etc. The comprehensive experimental investigation of magnetic, transport and structural properties of Ni-Mn-Sn thin films was undertaken as well as ab initio calculations. It was shown that the local atomic configuration affects on magnetic properties. The estimated values of the martensitic transformation temperature and Curie (Nel) temperature were collected in the form of phase diagram.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /204/ <div class="p"><!----></div> Date: Tuesday 2014.04.29, 12:00 <div class="p"><!----></div> Speaker: <b>Prof. Robert HoByst</b> <div class="p"><!----></div> Affiliation: Dyrektor Instytutu Chemii Fizycznej PAN w Warszawie <div class="p"><!----></div> Title: <font color="#0000FF">Artificial and biological engines</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I will discuss two issues related to the performance of artificial and biological engines. Three cases will be presented: ferroelectric liquid crystal monolayer performing continuous rotation in a monolayer of 3nm size powered by the flux of water; ATP as a biological pump powered by the flux of protons and finally kinesin motion along microtubules. In these three cases we will discuss the power of such engines and their resistance to thermal noise and local energy barriers induced by crowding by linear polymers.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM MichaB Banaszak <div class="p"><!----></div> </li> <li> /203/ <div class="p"><!----></div> Date: Wednesday 2014.04.23, 12:00 <div class="p"><!----></div> Speaker: <b>Dr hab. JarosBaw S. KBos</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki Komputerowej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Simulations of neutral and charged dendrimers</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We study the properties of neutral and charged dendrimers with flexible spacer-chains of various lengths and explicit counterions using Monte Carlo simulations based on the bond fluctuation model. For neutral dendrimers with the excluded volume interactions our simulations confirm the theoretical prediction for the scaling behavior of the dendrimer size. For charged dendrimers the full Coulomb potential is taken into account with the reduced temperature &#964; as the main control parameter. Our simulations show an interplay of counterion condensation, trapping of counterions inside the dendrimer's volume and counterion evaporation into the solution which give rise to a non-monotonous electrostatic swelling of the molecule with &#964;. To explain the swelling effect we apply a Flory-type argument where both trapped but non-condensed counterions and uncompensated charges due to counterion evaporation are included. This model properly reflects the swelling behavior with respect to temperature, pH and spacer-length variation, though quantitatively underestimates it.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /202/ <div class="p"><!----></div> Date: Wednesday 2014.04.16 <div class="p"><!----></div> Speaker: <b>Dr Maciej Misiorny</b> <div class="p"><!----></div> Affiliations: (1) Forschungszentrum J&#252;lich, Peter Gr&#252;nberg Institut, Theoretical Nanoelectronics Division (PGI-2), 52425 J&#252;lich, Germany and (2) Mesoscopic Physics Division, Physics Faculty, AMU. <div class="p"><!----></div> Title: <font color="#0000FF">Spintronic magnetic anisotropy</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Experimental techniques nowadays allow for detailed transport measurements of individual atoms [1] or molecules [2,3] that exhibit magnetic anisotropy. The superparamagnetism of these systems, i.e. the preferential alignment of their spins along an easy axis, is a useful effect for nanoscale applications as it prevents undesired spin reversal. It has been suggested [4], and also experimentally proven for magnetic atoms [5], that spin-polarized currents can be employed to control the magnetic state of such systems assuming a given, intrinsic anisotropy. Furthermore, it has been also demonstrated that magnetic anisotropy can play a major role in formation of the Kondo effect in nanoscopic systems [1,3]. However, the spintronic transport also changes the magnetic anisotropy that it tries to probe and therefore these two cannot be treated separately. In fact, we have recently shown that any spin-isotropic high-spin quantum dot coupled to ferromagnets can acquire superparamagnetic properties in a spintronic way, i.e. from the outside via an effective quadrupolar exchange field [6]. The talk will review various theoretical aspects of transport through nanoscopic systems displaying magnetic anisotropy, with the main emphasis on how the flow of spin-polarized current through such a molecule/adatom can induce the magnetic anisotropy. <div class="p"><!----></div> [1] A.F. Otte et al., Nature Phys. 4, 847 (2008).<br /> [2] H.B. Heersche et al., Phys. Rev. Lett. 96, 206801 (2006); A. Zyazin et al., Nano Lett. 10, 3307 (2010); E. Burzuri et al., Phys. Rev. Lett. 109, 147203 (2012).<br /> [3] J.J. Parks et al., Science 328, 1370 (2010).<br /> [4] M. Misiorny and J. Barna[, Phys. Rev. B 75, 134425 (2007); Phys. Rev. Lett. 111, 046603 (2013).<br /> [5] S. Loth et al., Nature Phys. 6, 340 (2010).<br /> [6] M. Misiorny, M. Hell and M. Wegewijs, Nature Phys. 9, 801 (2013).</blockquote> <div class="p"><!----></div> Chair: Prof. Adam Miranowicz <div class="p"><!----></div> </li> <li> /201/ <div class="p"><!----></div> Date: Thursday 2014.04.10 <div class="p"><!----></div> Speaker: <b>Prof. Jean-Claude S. Levy</b> <div class="p"><!----></div> Affiliation: Matriaux et Phnome`nes Quantiques, Universit Paris, France <div class="p"><!----></div> Title: <font color="#0000FF">Magnetic structures of 2D/3D nanoparticles</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Magnetic nanoparticles have many applications, from printing to medical treatments, electronic memories and radio frequency devices, but their magnetic structure is still not well known. After a short review of one century of observations of magnetic domains in magnetic particles and magnetic nanoparticles especially on 2D particles, comments will be given on last twenty years of numerical simulations. A short review of the magnetic dynamics of such particles and nanoparticles will also be given. Then analytic considerations on magnetic structures of 2D and 3D nanoparticles will be reported as well as basic models for the magnetic structure of small enough nanoparticles. Finally recent numerical results on the magnetic structure of 2D and 3D nanoparticles and their dynamics will be given.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /200/ <div class="p"><!----></div> Date: Tuesday 2014.04.8 <div class="p"><!----></div> Speaker: <b>Prof. Yuri Gorobets</b> <div class="p"><!----></div> Affiliation: Institute of Magnetism, National Academy of Sciences of Ukraine, Kiev, Ukraine <div class="p"><!----></div> Title: <font color="#0000FF">Biogenic nanomagnetism</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The lecture contains the review of the experimental data about the biogenic magnetic nanoparticles (BMNs) in different organisms. The BMNs became the object of intensive research since 1975 when the BMNs were detected in magnetotactic bacteria (MTB) for the first time. The literature data about the proteins of the so-called magnetosome island of MTB will be represented concerning the process of biomineralization of BMNs. The physiological origin of BMNs, their possible functions in multi-cellular organisms and interrelation with the number of human diseases will be considered on the basis of the bioinformatics methods and magnetochemical effects.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /199/ <div class="p"><!----></div> Date: Wednesday 2014.04.2 <div class="p"><!----></div> Speaker: <b>Dr Karol Bartkiewicz</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Efficient Amplification of Photonic Qubits by Optimal Quantum Cloning</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We demonstrate a phase-independent quantum amplifier of a polarization qubit which can outperform the heralded qubit amplifier [S. Kocsis et al., Nature Physics 9, 23 (2013)]. It employs the multi-functional cloner in 1 to 2 copying regime, capable of providing approximate copies of qubits given by various probability distributions, and is optimized for distributions with axial symmetry. The direct application of the proposed solution is possible in quantum technologies, doubling the range where quantum information is coherently broadcast. It also outperforms natural nonlinear amplifiers that use stimulated emission in bulk nonlinear materials. We consider the amplifier to be an important tool for amplifying quantum information sent via quantum channels with phase-independent damping.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /198/ <div class="p"><!----></div> Date: Wednesday 2014.03.26 <div class="p"><!----></div> Speaker: <b>Dr Krzysztof Dobek</b> <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Faculty of Physics, AMU <div class="p"><!----></div> Title: <font color="#0000FF">New approaches in tunable optics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> During the talk I will present modern techniques that allow to actively controlling the optical properties of a single optical element e.g. the lens focal length. First I will show widely used macroscopic devices, used for instance in astronomy, then emerging microscopic devices developed recently. Finally, I will present our efforts in the development of a flexible focal length device, whose operation is based on a new thermo-optical technique. </blockquote> <div class="p"><!----></div> Chair: Prof. UAM Adam Miranowicz <div class="p"><!----></div> </li> <li> /197/ <div class="p"><!----></div> Date: Wednesday 2013.03.19 <div class="p"><!----></div> Speaker: <b>Prof. MirosBaw Dudek</b> <div class="p"><!----></div> Affiliation: Institute of Physics, University of Zielona Gra <div class="p"><!----></div> Title: <font color="#0000FF">Mean field method with space dependent order parameter</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> A new and efficient algorithm for the mean-field approximation is presented, in which we do not need to solve explicitly the self-consistent condition. This algorithm is a modification of the Metropolis algorithm which is often used in Monte Carlo simulations.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM MichaB Banaszak <div class="p"><!----></div> </li> <li> /196/ <div class="p"><!----></div> Date: Wednesday 2014.03.12 <div class="p"><!----></div> Speaker: <b>Prof. MichaB Banaszak</b> <div class="p"><!----></div> Affiliation: Quantum Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">From Fractal Chaos to Regular Patterns and Vice Versa. Self-Organisation in Spatial Systems</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This study offers a new perspective on the spatial impacts generated by cities or urban agglomerations. These impacts can range from chaotic to fully ordered. We demonstrate that cities produce a wealth of gravitational attractors whose size and shape depend on the resistance of space emerging inter alia from transport friction costs. This finding offers original insights into the complex evolution of spatial systems and appears to be consistent with the principles of central place theory known from spatial sciences and geography. Our approach is dynamic in nature and forms a generalization of hierarchical principles in geographic space.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /195/ <div class="p"><!----></div> Date: Wednesday 2014.03.5 <div class="p"><!----></div> Speaker: <b>Prof. Grzegorz PawBowski</b> <div class="p"><!----></div> Affiliation: ZakBad Stanw Elektronowych CiaBa StaBego, WF UAM <div class="p"><!----></div> Title: <font color="#0000FF">Zastosowanie [rodowiska ALPS (2.1) do obliczeD w ukBadach silnie skorelowanych</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> W ramach wykBadu zaprezentowana zostanie najnowsza wersja 2.1.1 [rodowiska <em>Algorithms and Libraries for Physics Simulations (ALPS)</em> [1] wraz z jego zastosowaniami. ALPS jest projektem typu open source rozwijanym od roku 2004 przez midzynarodow grup fizykw teoretykw specjalizujcych si w badaniu ukBadw silnie skorelowanych [2]. <div class="p"><!----></div> Wszystkie elementy pakietu wykorzystuj wsplny format danych zapisanych w jzyku XML. Na tym poziomie przeprowadzenie symulacji nie wymaga znajomo[ci programowania w jzyku C++, w jakim zostaBy napisane biblioteki obliczeniowe i gBwne aplikacje. <div class="p"><!----></div> Gotowe programy obejmuj implementacje najwa|niejszych algorytmw dla modeli kwantowych na sieci, jak np.: klasyczne i kwantowe Monte Carlo (spinMC, QMC) w wersji lokalnej i klasterowej, kwantowe symulacje typu Wanga-Landaua (QWL), dokBadna i peBne diagonalizacja (ED), macierz gsto[ci grupy renormalizacji (DMRG) czy dynamiczne pole [rednie (DMFT). <div class="p"><!----></div> Zawarte w projekcie biblioteki stanowi ramy do rozwoju wBasnego oprogramowania z wykorzystaniem obliczeD rwnolegBych typu openMPI na r|nych platformach sprztowych i systemowych. <div class="p"><!----></div> W nowej wersji 2 oprogramowania ALPS uwzgldniono wykorzystanie standardu HDF5 do zapisu i zarzdzania danymi, u|ycie specjalistycznych narzdzi do analizy wynikw napisanych w jzyku Python oraz integracj pracy caBego systemu w [rodowisku do wizualizacji procesw obliczeniowych VisTrails. <div class="p"><!----></div> WykBad uzupeBniony bdzie o liczne przykBadowe obliczenia. <div class="p"><!----></div> [1] http://alps.comp-phys.org; <br /> [2] B.Bauer et al. (ALPS collaboration), "The ALPS project release 2.0: open source software for strongly correlated systems", J.Stat.Mech. P05001 (2011). </blockquote> <div class="p"><!----></div> Chair: Prof. UAM MichaB Banaszak <div class="p"><!----></div> </li> <li> /194/ <div class="p"><!----></div> Date: Thursday 2014.02.27 <div class="p"><!----></div> Speaker: <b>Dr Ryszard Gieniusz</b> <div class="p"><!----></div> Affiliation: Uniwersytet w BiaBymstoku <div class="p"><!----></div> Title: <font color="#0000FF">Fale spinowe w strukturyzowanych warstwach granatw</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Przedstawione zostan wybrane efekty zachowania si fal spinowych w strukturyzowanych warstwach granatu itrowo-|elazowego. Omwione bdzie oddziaBywania fal spinowych z: (i) pojedynczym otworem - zjawisko dyfrakcji fal spinowych; (ii) lini otworw - efekt caBkowitego wewntrznego odbicia tych fal; (iii) dwuwymiarow sieci otworw. Badania wykonano z wykorzystaniem: (i) klasycznego spektrometru nieelastycznego rozpraszania [wiatBa Brillouina (BLS) z rozdzielczo[ci czasow i przestrzenn w konfiguracji odbiciowej i transmisyjnej, (ii) mikroskopu BLS pracujcego w konfiguracji odbiciowej z rozdzielczo[ci przestrzenn do ok. 300 nm; (iii) spektrometru FMR. Wyniki eksperymentalne interpretowano korzystajc midzy innymi z modelowania mikromagnetycznego. Dodatkowo przedstawione bd, planowane do dalszych badaD, nowe struktury magnoniczne w oparciu o na[wietlane jonami magnetyczne nanostruktury. </blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /193/ <div class="p"><!----></div> Date: Wednesday 2014.02.26 at 13:00 <div class="p"><!----></div> Speaker: <b>Prof. Dagomir Kaszlikowski</b> <div class="p"><!----></div> Affiliation: Centre for Quantum Technologies, National University of Singapore <div class="p"><!----></div> Title: <font color="#0000FF">The triangle principle: new approach to non-classical correlations</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We study an application of an information-theoretic distance between two measurements to investigate non-classical correlations. We postulate the triangle principle, which states that any information-theoretic distance is well defined on any pair of measurements, even if these measurements cannot be jointly performed. As a consequence, the triangle inequality for this distance is obeyed for any three measurements. This simple principle is valid in any classical realistic theory, however it may not hold in quantum theory. It leads to derivation of certain inequalities whose violations are indicators of non-classicality. Some of these inequalities formally look the same as those found in the literature on local realism and non-contextuality but we also derive completely new inequalities. We also show that our geometrical approach naturally implies monogamy of non-classical correlations.</blockquote> <div class="p"><!----></div> Chair: Prof. UAM Maciej Krawczyk <div class="p"><!----></div> </li> <li> /192/ <div class="p"><!----></div> Date: Monday 2014.02.24 <div class="p"><!----></div> Speaker: <b>Prof. Peter Nijkamp</b> <div class="p"><!----></div> Affiliation: Professor of Regional Economics and Economic Geography at the Vrije Universiteit, Amsterdam, the Netherlands, a fellow of the Tinbergen Institute and President of the Governing Board of the Netherlands Research Council (NWO). <div class="p"><!----></div> Title: <font color="#0000FF">Virtual reality: The death of distance revisited.</font> <div class="p"><!----></div> Chair: Prof. UAM MichaB Banaszak <div class="p"><!----></div> </li> <li> /191/ <div class="p"><!----></div> Date: Wednesday 2014.02.19 <div class="p"><!----></div> Speaker: <b>Dr. PaweB KurzyDski</b> <div class="p"><!----></div> Affiliation: Centre for Quantum Technologies, National University of Singapore and Faculty of Physics, Adam Mickiewicz University <div class="p"><!----></div> Title: <font color="#0000FF">How to test indistinguishability of particles </font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> My talk will consist of two parts. First, we propose a test to measure the bosonic and fermionic quality of particles with respect to physical operations of single-particle addition and subtraction. We apply our test to investigate bosonic properties of composite particles made of an even number of fermions and suggest its experimental implementation. Next, we show that under certain assumptions one can derive a variant of Specker's non-contextual inequality for a system of three indistinguishable bosonic particles. The inequality states that the sum of probabilities of three pairwise exclusive events is bounded by one. This inequality cannot be violated using standard quantum mechanical projectors and cannot be violated by independent distinguishable particles. On the other hand, due to bosonic properties this bound is violated up to 3/2. We also argue that the violation of this inequality can be considered as a test of bosonic nature.</blockquote> <div class="p"><!----></div> </li> <li> /190/ <div class="p"><!----></div> Date: Wednesday 2014.02.12 <div class="p"><!----></div> Speaker: <b>Prof. Jacek GapiDski</b> <div class="p"><!----></div> Coauthors: Prof. Adam Patkowski and Prof. Gerhard Naegele <div class="p"><!----></div> Affiliation: ZakBad Biofizyki Molekularnej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Struktura, dynamika i krystalizacja ukBadw koloidalnych typu Yukawy. Cz[ II.<br />(Structure, dynamics and crystallization of Yukawa type colloidal systems. Part II.)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In the preceding talk, prof. Adam Patkowski explained the methods and tools which have been used to calculate the pair correlation function g(r) and the structure factor S(q) of colloidal systems with Yukawa-type interactions. Using these tools we managed to calculate the freezing lines of such systems both using experimentally measurable parameters and generalized parameters. In the latter case a master curve was obtained. In this part I am going to discuss the information accessible from the pair correlation function g(r) which describes the local structure of colloidal systems. In particular, I will show such parameters as the number of nearest neighbors, mean nearest neighbor distance, position of the maximum of g(r), and peak position of S(q). Conclusions drawn from the values obtained at freezing lines will be extended to colloidal systems in fluid state, leading to surprising results concerning the local structure of strongly interacting colloids.</blockquote> <div class="p"><!----></div> </li> <li> /189/ <div class="p"><!----></div> Date: Wednesday 2014.02.5 <div class="p"><!----></div> Speaker: <b>Prof. Adam Patkowski</b> <div class="p"><!----></div> Affiliation: ZakBad Biofizyki Molekularnej, WydziaB Fizyki UAM oraz Centrum NanoBioMedyczne UAM <div class="p"><!----></div> Title: <font color="#0000FF">Struktura, dynamika i krystalizacja ukBadw koloidalnych typu Yukawy. Cz[ I.<br />(Structure, dynamics and crystallization of Yukawa type colloidal systems. Part I.)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> OddziaBywania w zawiesinach naBadowanych koloidw opisane s przez efektywn energi oddziaBywaD dwjkowych typu Yukawy: u(r)/k<sub>B</sub>T&#160;&#8764;&#160;AZ<sup>2</sup>exp(&#8722;&#954;r)/r, gdzie A jest staB ukBadu, &#954;<sup>&#8722;1</sup> - dBugo[ci ekranowania Debye'a, Z - efektywnym Badunkiem czstki. Uporzdkowanie bliskiego zasigu w ukBadach koloidalnych mo|e by mierzone przy pomocy: dwjkowej funkcji rozkBadu radialnego g(r), [redniej odlegBo[ci najbli|szych ssiadw r<sub>n</sub> i ich liczby N<sub>n</sub>. Ostatnie dwie wielko[ci mog by obliczone z funkcji g(r). Uporzdkowanie dalekiego zasigu w ukBadach koloidalnych mierzone jest przez zale|ny od wektora rozpraszania q statyczny czynnik struktury S(q), ktry mo|e by zmierzony w eksperymencie rozpraszania [wiatBa lub nisko-ktowego rozpraszania promieni rentgena (SAXS). Punkt krystalizacji ukBadu koloidalnego dany jest przez kryterium Hansena-Verleta (HV): S(q<sub>m</sub>)=3. Dynamika ukBadu koloidalnego charakteryzowana jest przez krtko-czasowy wspBczynnik dyfuzji kolektywnej D<sub>C</sub>(q), okre[lony jako: D<sub>C</sub>(q)=D<sub>0</sub>H(q)/S(q), gdzie D<sub>0</sub> jest warto[ci dla nieskoDczonego rozcieDczenia ukBadu, a H(q) jest zale|n od q funkcj hydrodynamiczn. Wykazali[my, przy pomocy statycznego (SAXS) i dynamicznego (XPCS) rozpraszania rentgenowskiego promieniowania synchrotronowego, |e modele teoretyczne dla S(q) - rwnanie caBkowe Rogersa-Younga (RY), oraz dla D<sub>C</sub>(q)-model &#948;&#947;, dobrze opisuj dane do[wiadczalne uzyskane dla naBadowanych koloidw w caBym zakresie ciekBym [1]. Stosujc model &#948;&#947; przeanalizowali[my zachowanie funkcji hydrodynamicznej H(q) [2], a przy pomocy rwnania caBkowego RY oraz kryterium HV uzyskali[my rwnie| krzyw krystalizacji [3] dla naBadowanych koloidw typu Yukawy w szerokim zakresie Badunku, rozmiarw i st|enia koloidw i st|enia dodanej soli. Ostatnio badali[my tak|e punktu krystalizacji. <div class="p"><!----></div> [1] J. Gapinski, A. Patkowski, A. J. Banchio, J. Buitenhuis, P. Holmquist, M. P. Lettinga, G. Meier and G. Ngele, J. Chem. Phys. 130 (2009) 084503.<br /> [2] J. Gapinski, A. Patkowski and G. Ngele, J. Chem. Phys. 132 (2010) 054510.<br /> [3] J. Gapinski, G. Ngele, and A. Patkowski, J. Chem. Phys. 136 (2012) 024507.</blockquote> <div class="p"><!----></div> </li> <li> /188/ <div class="p"><!----></div> Date: Wednesday 2014.01.29 <div class="p"><!----></div> Speaker: <b>Dr SBawomir Mamica</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki NanomateriaBw, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Spin-wave spectra of two-dimensional circularly magnetized nanodots and nanorings</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The properties of small magnetic dots are the object of increased interest because of their rich physics and potential applications in a variety of fields, such as data storage and information processing, single magnetic nanoparticle sensing and trapping, microwave-frequency oscillators, or frequency multiplication. The physical phenomena observed in small magnetic dots are related to their minute dimensions, ranging from tens of nanometers to a few micrometers, and the competition between the long-range dipolar interaction and the short-range exchange interaction. In small magnetic dots their concurrence leads, among other effects, to a rich spectrum of stable and metastable magnetic configurations, including vortex states. The chirality and polarity of the vortex are potential information carriers and can be switched with external magnetic field, electric current, or microwave radiation. An important role in magnetization switching, as well as in the stability of magnetic configurations, is played by spin-wave excitations. Moreover, the role of thermally excited spin waves in magnetization switching proves very important even in particles smaller than the exchange length. <div class="p"><!----></div> In this work we use a microscopic theory taking into account the dipolar and nearest-neighbour exchange interactions for exploring spin-wave excitations in two-dimensional magnetic dots in the vortex state. Normal modes of different profiles are observed: azimuthal and radial modes, as well as fundamental (quasiuniform) and highly localized modes. We examine the dependence of the frequencies and profiles of these modes on the dipolar-to-exchange interaction ratio and the size of the dot. Special attention is paid to some particular modes, including the lowest mode in the spectrum and the evolution of its profile, and the fundamental mode, the frequency of which proves almost independent of the dipolar-to-exchange interaction ratio. Finally, we study the hybridization of the modes, show the multi-mode hybridization and explain the selection rules. <div class="p"><!----></div> [1] S. Mamica et al., J. Phys. D, accepted (2013).<br /> [2] S. Mamica, J. Appl. Phys., accepted (2014).</blockquote> <div class="p"><!----></div> </li> <li> /187/ <div class="p"><!----></div> Date: Tuesday 2014.01.21 <div class="p"><!----></div> Speaker: <b>Prof. Andrzej Sikorski</b> <div class="p"><!----></div> Affiliation: ZakBad Teorii Biopolimerw, WydziaB Chemii Uniwersytetu Warszawskiego <div class="p"><!----></div> <div class="p"><!----></div> Title: <font color="#0000FF">The properties of adsorbed polymers</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The properties of polymer films formed by adsorbed or tethered chains are important for practical reasons (lubrication, colloidal stabilization, chromatography etc.) and interesting from the theoretical point of view. The adsorption of homo- and copolymers on homogenous and patterned surfaces was a subject of our studies. We employed computer simulations of idealized models as a main tool. The coarse-grained models of macromolecules were designed for this purpose. The properties of the system studied were determined using some versions of the Monte Carlo method. The influence of the temperature, the strength of the adsorption, the sequence of mers, patterns on the surface and the macromolecular architecture on the properties of chains were studied. The results were discussed and compared to other simulations results, theoretical predictions and real experiments.</blockquote> <div class="p"><!----></div> </li> <li> /186/ <div class="p"><!----></div> Date: Wednesday 2014.01.15 <div class="p"><!----></div> Speaker: <b>Dr SBawomir Mamica</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki NanomateriaBw, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Stability of the in-plane vortex state in two-dimensional magnetic nanodots and nanorings</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> A major scientific interest of magnetic nanodots and nanorings lies in the concurrence of the exchange and dipolar interactions. In a variety of systems, long-range interactions have led to a number of interesting findings. However, the concurrence of short-range and long-range interactions proves particularly interesting. Also the magnetic vortex state stems from the competition between the long-range dipolar interaction and the short-range exchange interaction. On the other hand, studies of the possible stable and metastable magnetic configurations in magnetic nanorings are of major importance regarding to the potential applications which extend from data processing and high-density magnetic random access memory (MRAM) elements to microwave frequency oscillators and single magnetic nanoparticle sensors. <div class="p"><!----></div> In this work we study two-dimensional nanodots and nanorings composed of elementary magnetic moments arranged in sites of a square lattice. Using a microscopic approach that takes into account the dipolar and nearest-neighbour exchange interactions, we calculate the spin-wave frequencies and profiles to draw conclusions regarding the stability of the assumed magnetic configuration. We show that, in contrast to square rings, in circular rings the exchange-driven reorientation is sensitive to both the external and internal sizes of the ring. We associate this behaviour with the delocalized character of the lowest spin-wave excitation, and show that, consequently, the in-plane vortex state can be stabilized even in the case of strong exchange interactions. <div class="p"><!----></div> [1] S. Mamica et al., J. Nanopart. Res. 13, 6075 (2011).<br /> [2] S. Mamica et al., J. Appl. Phys. 112, 043901 (2012).<br /> [3] S. Mamica, J. Appl. Phys. 113, 093901 (2013). </blockquote> <div class="p"><!----></div> </li> <li> /185/ <div class="p"><!----></div> Date: Wednesday 2014.01.08 <div class="p"><!----></div> Speaker: <b>Dr Ewa Banachowicz</b> <div class="p"><!----></div> Affiliation: ZakBad Biofizyki Molekularnej, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Struktura przestrzenna zdenaturowanych biaBek badana metodami Monte Carlo</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Struktura biaBek od dziesicioleci stanowi przedmiot dociekaD naukowcw z r|nych dziedzin. Dziki znajomo[ci przestrzennej budowy czsteczek biologicznych Batwiej jest przewidzie i zrozumie ich funkcj. We wspBczesnej farmacji rozwizanie struktury tak zwanego biaBka docelowego (targetu) jest podstaw zaprojektowania skutecznego i specyficznie dziaBajcego leku. Rozwinito zatem wysokorozdzielcze techniki eksperymentalne pozwalajce z dokBadno[ci do pojedynczego atomu okre[li przestrzenne rozmieszczenie wszystkich jego elementw. Na tej podstawie powstaBa hipoteza o uporzdkowanej i stosunkowo sztywnej budowie biaBek. OkazaBo si jednak, |e po[rd biaBek, ktrym przypisano kluczow rol w procesach biologicznych wiele posiada budow  wewntrznie nieuporzdkowan . Struktura biaBka zdenaturowanego (rozplecionego w okre[lonych warunkach), podobnie jak struktura gitkich nieuporzdkowanych wewntrznie biaBek, nie mo|e by ustalona ani za pomoc rentgenografii strukturalnej ani spektroskopii NMR. Zale|no[ promienia bezwBadno[ci od masy oraz czynnik ksztaBtu otrzymywane z badaD niskoktowego rozpraszania neutronw i promieniowania rentgenowskiego dla roztworw tych biaBek wskazuj na struktur kBbka statystycznego. Nie wyja[niaj jednak w jaki sposb kBbek statystyczny mo|e w specyficzny sposb oddziaBywa z innymi biaBkami, tworzc aktywne biologicznie kompleksy. Nie jest te| do koDca jasne, w jaki sposb swobodny, losowo uBo|ony BaDcuch przechodzi do formy uporzdkowanej. AaDcuchy biaBkowe s polimerami o do[ zBo|onej budowie. Ka|dy mer jest jednym z 20 aminokwasw i mo|e mie inne wBasno[ci fizyczne - inny Badunek, objto[ lub dBugo[ BaDcucha bocznego - ni| jego ssiad. Kolejno[ merw decyduje o lokalnych wBasno[ciach BaDcucha gBwnego i wyklucza pewne grupy konformacji. Symulacje Monte Carlo swobodnie bBdzcego BaDcucha biaBkowego reprezentowanego przez peBno-atomowy model w sieci FCC maj uBatwi odpowiedz na pytania: (1) czy zdenaturowane i wewntrznie nieuporzdkowanie biaBka rzeczywi[cie maj struktur kBbka? (2) jak rozmiar BaDcuchw bocznych mo|e wpByn na struktur caBej czsteczki? oraz (3) jakie oddziaBywania determinuj ewentualn struktur lokaln? </blockquote> <div class="p"><!----></div> </li> <li> /184/ <div class="p"><!----></div> Date: Tuesday 2013.12.17, 10:00 <div class="p"><!----></div> Speaker: <b>Prof. Maciej Lewenstein</b> <div class="p"><!----></div> Affiliation: ICREA Research Professor at ICFO (Institut de Cie`ncies Foto`niques), Barcelona, Spain. <div class="p"><!----></div> Title: <font color="#0000FF">Report from the frontiers of atomic, molecular and optical physics and quantum information</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In my lecture I will talk about some hot topics of AMO and QI by presenting examples of several lines of research, concentrating on theoretical and experimental challenges. The particular subjects will include: a) quantum simulators, i.e. systems capable of simulation of non-trivial and hard to treat quantum many body problems; b) novel kind of numerical and theoretical approaches to many body systems (tensor network states), employing the role of entanglement in many body problems; c) hybrid systems, combining nano-physics with quantum optics.</blockquote> <div class="p"><!----></div> </li> <li> /183/ <div class="p"><!----></div> Date: Wednesday 2013.12.11 <div class="p"><!----></div> Speaker: <b>Dr SBawomir Mamica</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki NanomateriaBw, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">On the three-dimensional magnetoferritin-based magnonic crystals. Perspectives for the magnonic band gap tailoring</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Magnetic nanoparticles (NPs) have been intensively studied because of their unusual physical properties as well as promising applications in a wide variety of fields that range from medicine to nanoelectronics. In this study we consider the use of biomimetic NPs of the very numerous magnetoferritin superfamily as the basis for the realization of 3D magnonic crystals in which the interparticle space is filled with a ferromagnetic material. The use of protein cages as reaction chambers for the production of NPs has a number of advantages. One of them is a high level of homogeneity of the NPs in terms of size and shape, determined by the internal surface of the protein cage. Another major advantage of biomimetic NPs from the point of view of this study is the possibility of producing highly ordered 3D structures by self-assembly [1]. <div class="p"><!----></div> We use the plane wave method to demonstrate that the introduction of a ferromagnetic matrix can lead to the opening of a complete band gap, referred to as a magnonic band gap, in the spin-wave spectrum. We use a model based on a homogeneous medium with effective parameters to interpret the characteristics of the obtained spin-wave spectra in the long wave limit. We also study in detail the width of the band gap and its central frequency versus the matrix material and the lattice constant. The occurrence of a maximum width in the lattice-constant dependence is shown to be closely related to the specific behaviour of the dynamic magnetization profiles of the lowest excitations in the spin-wave spectrum. On the basis of our results we determine the conditions conducive to the occurrence of a complete magnonic band gap. We also show that the crystallographic structure and the lattice constant of the crystals produced by the protein crystallization technique are almost optimized for the occurrence of a magnonic band gap [2,3]. <div class="p"><!----></div> [1] O. Kasyutich et al., J. Appl. Phys. 105, 07B528 (2009).<br /> [2] S. Mamica et al., Phys. Rev. B 86, 144402 (2012). <br /> [3] S. Mamica, J. Appl. Phys. 114, 043912 (2013). </blockquote> <div class="p"><!----></div> </li> <li> /182/ <div class="p"><!----></div> Date: Wednesday 2013.12.04 <div class="p"><!----></div> Speaker: <b>Dr Aleksandra Trzaskowska</b> <div class="p"><!----></div> Affiliation: ZakBad Fizyki KrysztaBw, WydziaB Fizyki UAM <div class="p"><!----></div> Title: <font color="#0000FF">Periodic nanostructures on silicon surface</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> During the seminar experimental and theoretical study of the phononic band gap in the hypersonic range for thermally activated surface acoustic waves will be presented. Two dimensional phononic crystals have been studied by the Surface Brillouin Light Scattering. The experiment was performed on the (001) surface of the silicon loaded with two-dimensional square and hexagonal lattice of pillars of different height (100 or 150 nm). It will be presented a new type of surface modes which are related to phononic effects and mechanical eigenmodes of pillars. The experimental data will be compared with results of theoretical modeling by the Finite Element Method.</blockquote> <div class="p"><!----></div> </li> <li> /181/ <div class="p"><!----></div> Date: Friday 2013.11.29 <div class="p"><!----></div> <div class="p"><!----></div> Speaker: <b>Prof. Maciej Kozak</b> <div class="p"><!----></div> Affiliation: Macromolecular Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">SOLARIS - new light for Polish science</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> In December 2011 was initiated in Krakw the construction of the first Polish synchrotron - The National Synchrotron Radiation Centre SOLARIS. The energy parameters of SOLARIS (1.5 GeV) allow planning of beam lines utilising the synchrotron radiation from infrared to hard X-rays range. Two beamlines - UARPES (Ultra Angle Resolved Photoemission Spectroscopy) and PEEM/XAS (Photoemission Electron Microscopy/X-ray Absorption Spectroscopy) are currently under construction. Four other new beamlines (IR spectroscopy, XAS/EXAFS spectroscopy, Soft X-ray spectroscopies and multipurpose station - macromolecular crystallography/small angle X-ray scattering/powder diffractometry) are now at different stages of conception and design. First research using synchrotron radiation in SOLARIS can start at the beginning of 2015. The lecture summarized the progress of the construction of the first Polish synchrotron and research opportunities offered.</blockquote> <div class="p"><!----></div> </li> <li> /180/ <div class="p"><!----></div> Date: Wednesday 2013.11.27 <div class="p"><!----></div> Speaker: <b>Dr Tomasz SowiDski</b> <div class="p"><!----></div> Affiliation: Institute of Physics of the Polish Academy of Sciences, Warsaw, Poland and Center for Theoretical Physics of the Polish Academy of Sciences, Warsaw, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Spontaneous breaking of the time-reversal symmetry in optical lattices</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The ground-state properties of bosons loaded into the p-band of a one dimensional optical lattice is studied. It is shown that the phase diagram of the system is substantially affected by the anharmonicity of the lattice potential. In particular, for a certain range of tunneling strength, the full many-body ground state of the system becomes degenerate. In this region, an additional symmetry of the system, namely the parity of the occupation number of the chosen orbital, is spontaneously broken. The state with nonvanishing staggered angular momentum, which breaks the time-reversal symmetry, becomes the true ground state of the system.</blockquote> <div class="p"><!----></div> </li> <li> /179/ <div class="p"><!----></div> Date: Wednesday, 20 November 2013 <div class="p"><!----></div> Speaker: <b>Dr hab. Konstantin Tretiakov</b> <div class="p"><!----></div> Affiliation: Institute of Molecular Physics, Polish Academy of Sciences, 60-179 PoznaD <div class="p"><!----></div> Title: <font color="#0000FF">The rate of energy dissipation determines probabilities of nonequilibrium assemblies</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This work demonstrates that outside of thermodynamic equilibrium, the rate at which energy is dissipated to maintain an ordered state is related to the likelihood of this state being observed. This result is based on a study of a model system in which different ( polymorphic ) non-equilibrium structures are realized for the same values of system s parameters [1]. Because the polymorphs differ only in the rates of energy dissipation, &#1013;  and not in their kinetic or potential energies  it is possible to directly relate probabilities of polymorphs occurrence to &#1013;. Combination of experiments and simulations indicates that the probability of polymorph/ state occurrence decreases exponentially with its increasing dissipation rate [2]. In other words, far from thermodynamic equilibrium, nature favors less dissipative states, although the more thermodynamically wasteful structures are also permitted with small probabilities. <div class="p"><!----></div> [1] B. A. Grzybowski, H. A. Stone, and G. M. Whitesides, Dynamic self-assembly of magnetized, millimetre-sized objects rotating at a liquid-air interface. Nature 405, 1033-1036 (2000). <div class="p"><!----></div> [2] K. V. Tretiakov, I. Szleifer, and B. A. Grzybowski, The rate of energy dissipation determines probabilities of non-equilibrium assemblies, Angew. Chem. Int. Ed. 52, 10304-10308 (2013).</blockquote> <div class="p"><!----></div> </li> <li> /178/ <div class="p"><!----></div> Date: Tuesday 2013.11.12 <div class="p"><!----></div> Speaker: <b>Dr Marcin PawBowski</b> <div class="p"><!----></div> Affiliation: Instytut Fizyki Teoretycznej i Astrofizyki, Uniwersytet GdaDski, 80-952 GdaDsk oraz Krajowe Centrum Informatyki Kwantowej w GdaDsku, 81-824 Sopot <div class="p"><!----></div> Title: <font color="#0000FF">Semi-device independent protocols</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> After the second World War the British sold Enigma to the governments of some of their former colonies claiming that it was unbreakable. To counter untrusted vendors of the devices used in communication tasks quantum information theory offers Device Independent protocols, which can guarantee the security even if the devices are rigged. However, these protocols require parameters which are extremely difficult to obtain in real experiments (so far no group has been able to demonstrate Device Independent QKD). Semi-Device Independent protocols offer good compromise between the level of trust in the vendor of the device and the hardness of physical implementation. In this talk I will introduce the Semi-Device Independent scenario, give the examples of QKD and randomness expansion protocols and report on experimental realizations. </blockquote> <div class="p"><!----></div> </li> <li> /177/ <div class="p"><!----></div> Date: Friday 2013.11.08 <div class="p"><!----></div> Speaker: <b>Prof. Anirban Pathak</b> <div class="p"><!----></div> Affiliation: Department of Physics, Jaypee Institute of Information Technology (Deemed University), Noida, India. <div class="p"><!----></div> Title: <font color="#0000FF">Can we build a reversible classical computer?</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Due to decoherence and other well-known issues, physical realization of a scalable quantum computer is not expected to happen in near future. However, it may be possible to design a reversible classical computer that would be free from energy loss due to logical operations. Due to other kind of existing losses it may not be very attractive as a commercial product, but it is interesting to investigate whether we are ready to build a reversible classical computer. We show that we can really build smart reversible circuits for almost all the essential component of a computer. Thus in principle we can build a reversible classical computer. <div class="p"><!----></div> To elaborate on the above claim we first provide a short introduction to the various quantitative measures of the quality of reversible and quantum circuits. To provide a clear distinction between classical reversible circuits and quantum circuits, some foundational aspects of quantum mechanics (specially related to measurement postulate, duality and monogamy) are discussed. The physics behind the strategies adopted for the optimization of various costs of quantum and reversible circuits are explained. Subsequently, two algorithms for optimization of quantum cost are described and optimized quantum costs of different reversible and quantum circuits are shown. As examples, some useful optimized quantum and reversible circuits designed by our group in recent past are shown. Specifically, reversible designs of Montgomery multiplier, sequential elements and ALU of a crypto-processor with minimal gate count, garbage bits, optimal quantum cost and delay are shown. <div class="p"><!----></div> Further to show that optimization strategies discussed in context of classical reversible circuits are also applicable to quantum circuits, we provide a set of optimized quantum circuits useful for construction of entanglement concentration protocols (ECPs) for cat state, GHZ-like state and all families of 4-qubit entangled states.</blockquote> <div class="p"><!----></div> </li> <li> /176/ <div class="p"><!----></div> Date: Wednesday 2013.10.30 <div class="p"><!----></div> Speaker: <b>Prof. Krzysztof Wojciechowski </b> <div class="p"><!----></div> Affiliation: Institute of Molecular Physics, Polish Academy of Sciences, 60-179 PoznaD <div class="p"><!----></div> Title: <font color="#0000FF">Auxetic foams: how, when, why?</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Materials with anomalous (negative) Poisson's ratio are called auxetics. In contrast to common materials, auxetics shrink when stretched and expand transversally when axially compressed. (Perfect auxetics preserve their shape when changing dimensions. So, in some sense, they show a behaviour opposite to incompressible liquids.) In spite that auxetic systems in the form of man-made structures [1] or self-organising (thermodynamically stable) phases [2] are known for more than 25 years, they are still intensively studied for many potential applications [3,4]. In this lecture the research in the field of auxetics will be briefly reviewed with emphasis on some recent results obtained for auxetic foams [5]. <div class="p"><!----></div> [1] R. S.Lakes, "Negative Poisson's ratio materials", Science 235, 1038-1040 (1987).<br /> [2] K. W. Wojciechowski, "Constant thermodynamic tension Monte Carlo studies of elastic properties of a two-dimensional systems of hard cyclic hexamers", Molecular Physics 61, 1247-125 (1987).<br /> [3] Y. Prawoto, "Seeing auxetic materials from the mechanics point of view: A structural review on the negative Poisson's ratio", Computational Materials Science 58, 140-153 (2012).<br /> [4] K. W. Wojciechowski, J. N. Grima, K. L. Alderson, J. Rybicki, "Preface - Auxetic Materials and Related Systems", Physica Status Solidi B 250, 1959-1962 (2013); see also the references therein.<br /> [5] A. A. Pozniak, J. Smardzewski, and K. W. Wojciechowski, "Computer simulations of auxetic foams in two dimensions", Smart Materials and Structures 22, article 084009 (2013)</blockquote> <div class="p"><!----></div> </li> <li> /175/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Dr Karel Lemr</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Linear optical quantum routers</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This talk summarizes our recent results in the field of quantum routing. First, we define a fully functional quantum router with emphasis on the features such router has to provide. Then we review some of the previously published schemes showing the lack for genuine linear-optical quantum router for individual photons. Subsequently we present our two proposals for linear-optical quantum routers [1,2] and discuss their advantages and disadvantages. Finally we address the experimental implementation that is currently under construction in our laboratory. <div class="p"><!----></div> [1] K. Lemr, A. ernoch, Linear-optical programmable quantum router, Opt. Comm. 300, 282-285 (2013).<br /> [2] K. Lemr, K. Bartkiewicz, A. ernoch, and J. Soubusta, Resource-efficient linear-optical quantum router, Phys. Rev. A 87, 062333 (2013).</blockquote> <div class="p"><!----></div> </li> <li> /174/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Dr Antonn ernoch</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Linear-optical qubit amplifier</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We propose a linear-optical scheme for heralded qubit amplification. The device is able to change the ratio between probabilities of detecting vacuum or a photonic qubit in the signal transmitted via some lossy channel by using a pair of entangled ancillae. The probability of successful amplification does not asymptotically drop to zero for infinite gain and it can be optimized if (i) some a priory knowledge of input state is known or (ii) some noise in the output signal is tolerated.</blockquote> <div class="p"><!----></div> </li> <li> /173/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Doc. Jan Soubusta</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Recent results of the experimental-optics group in Olomouc</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We summarize ten years of experiments dealing with quantum cloning and implementations of linear-optical quantum devices. We tried several concepts and several platforms for optimal cloning of photon qubits. We developed several linear-optical quantum information processing devices and we used them for cloning.</blockquote> <div class="p"><!----></div> </li> <li> /172/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Jan Perina Jr.</b> <div class="p"><!----></div> Title: <font color="#0000FF">Sub-Poissonian-light generation by postselection from twin beams</font> <div class="p"><!----></div> Authors: Jan Perina, Jr.<sup>1</sup>, Ondrej Haderka<sup>2</sup>, Vaclav Michalek<sup>2</sup> <div class="p"><!----></div> <sup>1</sup> RCPTM, Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of AS CR, Palack&#253; University, 17. listopadu 12, 77146 Olomouc, Czech Republic<br /> <sup>2</sup> Institute of Physics of Academy of Sciences of the Czech Republic, Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, 17. listopadu 12, 772 07 Olomouc, Czech Republic <div class="p"><!----></div> <blockquote><b>Abstract:</b> States with sub-Poissonian photon-number statistics obtained by post-selection from twin beams are characterized. States with Fano factors around 0.7 and mean photon numbers around 12 are experimentally reached. Their quasi-distributions of integrated intensity attaining negative values are determined. An intensified CCD camera with quantum detection efficiency exceeding 20&nbsp;% is utilized both for post-selection and characterization. Experimental results are compared with theory that provides optimum conditions for the experiment.</blockquote> <div class="p"><!----></div> </li> <li> /171/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Marek Czachor</b> <div class="p"><!----></div> Affiliation: Faculty of Applied Physics and Mathematics, Technical University of GdaDsk and National Quantum Information Centre in Sopot <div class="p"><!----></div> Title: <font color="#0000FF">Are EPR correlations sensitive to the form of field quantization?</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> As is widely known, the standard "one oscillator per one mode" quantization of free fields leads to the correct physical prediction &lt;AB&#62;=cos(a-b) for entanglement of linear polarizations, and violates the Bell inequality. This seems to suggest that the tensor product structure associated with the "oscillator per mode" quantization is indeed THE tensor structure associated with quantum fields. However, I will show that &lt;AB&#62;=cos(a-b) is typical also of fields quantized in a different way, where there is no relation at all between the number of modes and the number of oscillators.</blockquote> <div class="p"><!----></div> </li> <li> /170/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Konrad Banaszek</b> <div class="p"><!----></div> Affiliation: Institute of Theoretical Physics, Department of Quantum Optics and Atomic Physics, Faculty of Physics, University of Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Which-way experiment with an internal degree of freedom</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We present an inequality relating visibility and which-way information for a particle equipped with an internal degree of freedom travelling through a Mach-Zehnder interferometer. The inequality paints an unexpectedly intricate picture of wave-particle duality in the general case. Strikingly, in some instances which-way information becomes erased by introducing classical uncertainty in the internal degree of freedom. Furthermore, even imperfect interference visibility measured for a suitable set of inputs can be sufficient to infer absence of which-way information.</blockquote> <div class="p"><!----></div> </li> <li> /169/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Qiongyi He</b> <div class="p"><!----></div> Title: <font color="#0000FF">Einstein-Podolsky-Rosen paradox and quantum steering in pulsed optomechanic</font> <div class="p"><!----></div> Authors: Q. Y. He<sup>1,2</sup>, M. D. Reid<sup>2</sup>, and P. D. Drummond<sup>2</sup> <div class="p"><!----></div> <sup>1</sup> State Key Laboratory of Mesoscopic Physics, School of Physics, Peking University, Beijing, China;<br /><sup>2</sup> Centre for Quantum Atom Optics, Swinburne University of Technology, Melbourne, Australia <div class="p"><!----></div> <blockquote><b>Abstract:</b> We describe how to generate an Einstein-Podolsky-Rosen (EPR) paradox between a mesoscopic mechanical oscillator and an optical pulse. We find two types of paradox, defined by whether it is the oscillator or the pulse that shows the effect Schrodinger called  steering . Only the oscillator paradox addresses the question of mesoscopic local reality for a massive system. In that case, EPR s  elements of reality are defined for the oscillator, and it is these elements of reality that are falsified (if quantum mechanics is complete). For this sort of paradox, we show that a thermal barrier exists, meaning that a threshold level of pulse-oscillator interaction is required for a given thermal occupation n<sub>0</sub> of the oscillator. We find there is no equivalent thermal barrier for the entanglement of the pulse with the oscillator, nor for the EPR paradox that addresses the local reality of the optical system. Our work highlights the asymmetrical effect of thermal noise on quantum nonlocality.</blockquote> <div class="p"><!----></div> </li> <li> /168/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Zbigniew Ficek</b> <div class="p"><!----></div> Title: <font color="#0000FF">Role of the first-order coherence in entanglement between Gaussian modes</font> <div class="p"><!----></div> Affiliation: The National Centre for Mathematics and Physics, KACST, Riyadh, Saudi Arabia <div class="p"><!----></div> In collaboration with: Li-hui Sun<sup>1</sup> and Gao-xiang Li<sup>2</sup><br /> <sup>1</sup> College of Physical Science and Technology, Yangtze University, Jingzhou, P. R. China<br /> <sup>2</sup> Department of Physics, Huazhong Normal University, Wuhan, P. R. China <div class="p"><!----></div> <blockquote><b>Abstract:</b> The coherence and entangled properties of coupled Gaussian modes of optical systems are discussed. The systems considered are (1) an atomic ensemble located inside a ring cavity, and (2) an optical lattice trapped inside a cavity with a movable mirror. We examine separately the cases of two-mode and three-mode interactions, which are distinguished by a suitable tuning of the mode frequencies. We find that the occurrence of entanglement in the system is highly sensitive to the presence of the first-order coherence between the modes. In particular, the creation of the first-order coherence between modes is achieved at the expense of entanglement between them.</blockquote> <div class="p"><!----></div> </li> <li> /167/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Maciej Krawczyk</b> <div class="p"><!----></div> Affiliation: Nanomaterials Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Review and prospects of magnonic crystals</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Magnonic crystals are the magnetic equivalent of photonic crystals, with spin waves as the counterpart of electromagnetic waves, playing the role of information carriers. We will present short overview of research performed on magnonic crystals offering tailored band structures for spin waves. The promising directions of magnonic crystals research and its applications will be briefly discussed.</blockquote> <div class="p"><!----></div> </li> <li> /166/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Dr PrzemysBaw GBowacki</b> <div class="p"><!----></div> Title: <font color="#0000FF">Spectroscopic investigations of the atomic structure in support of quantum engineering and metrology</font> <div class="p"><!----></div> Authors: P. GBowacki<sup>1</sup>, A. Krzykowski<sup>1</sup>, A. Jarosz<sup>1</sup>, O. A. Herrera-Sancho<sup>2</sup>, M. V. Okhapkin<sup>2</sup>, E. Peik<sup>2</sup> <div class="p"><!----></div> <sup>1</sup> Laboratory of Quantum Engineering and Metrology, PoznaD University of Technology, Poland<br /> <sup>2</sup> Physikalisch-Technische Bundesanstalt, Braunschweig, Germany <div class="p"><!----></div> <blockquote><b>Abstract:</b> The contribution is focused on spectroscopic investigations of electronic levels, in particular metastable ones, in free atoms and ions.<br /> A system consisting of a metastable atomic state and the ground state is very favorable for optical atomic frequency standards, since the levels are connected via a forbidden transition with possible application as a "clock" transition. The same system of levels may serve as a basis for construction of a quantum bit.<br /> Within the work some recent achievements in high precision spectroscopy of metastable levels in chromium atoms, obtained with ABMR-LIRF (laser - microwave double resonance on an atomic beam) method [1, 2], are presented. A brief review of experimental investigations of thorium ion structure aimed at construction of an extremely precise optical nuclear frequency standard [3], performed in cooperation in PTB, is also given.<br /> <div class="p"><!----></div> [1] A. Jarosz, D. StefaDska, M. Elantkowska, J. Ruczkowski, A. Buczek, B. Furmann, P. GBowacki, A. Krzykowski, A. Pitkowski, E. Stachowska, J. DembczyDski, High precision investigations of the hyperfine structure of metastable levels in chromium atom, J. Phys. B: At. Mol. Opt. Phys. 40: 2785-2797 (2007).<br /> [2] A. Krzykowski, P. GBowacki, A. Jarosz Precise measurements of the hyperfine structure of the levels belonging to the terms 3d<sup>5</sup>4s <sup>5</sup>G and <sup>5</sup>P in Cr(I), Acta Phys. Pol. A, 122, 78-81 (2012).<br /> [3] O. A. Herrera-Sancho, M. V. Okhapkin, K. Zimmermann, Chr. Tamm, E. Peik, A. V. Taichenachev, V. I. Yudin, P. GBowacki, Two-photon laser excitation of trapped <sup>232</sup>Th<sup>+</sup> ions via the 402-nm resonance line Phys. Rev. A 85, 033402 (2012).</blockquote> <div class="p"><!----></div> </li> <li> /165/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Dr hab. Ireneusz Weymann</b> <div class="p"><!----></div> Affiliation: Mesoscopic Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">The Kondo effect in quantum dots</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum dots are promising candidates for future quantum computing devices. They are also considered as ideal model systems to study fundamental correlations and interactions between single charges and spins. We will here present the basic transport properties of quantum dots coupled to external leads, with a special focus on the strong coupling regime where the electronic correlations can give rise to the Kondo effect. The case of the spin S=1/2 Kondo effect will be analyzed for quantum dots with both nonmagnetic and ferromagnetic leads. Moreover, we will also discuss the SU(4) Kondo effect, which can occur in double quantum dots when the system possesses both spin and orbital degeneracy.</blockquote> <div class="p"><!----></div> </li> <li> /164/ <div class="p"><!----></div> Date: Thursday 2013.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Alexandre Zagoskin</b> <div class="p"><!----></div> Affiliation: Loughborough University, UK <div class="p"><!----></div> Title: <font color="#0000FF">Quantum metamaterials: concept and applications</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum metamaterials are optical media comprised of artificial quantum scatterers (e.g., qubits), in such a way that (1) these unit blocks maintain quantum coherence for times exceeding the characteristic travel time of an electromagnetic wave through the system, and (2) their quantum state can be directly controlled. For example, a periodic arrangement of qubits in a register of an adiabatic quantum computer can be considered as a quantum metamaterial. <div class="p"><!----></div> The simplest case of a quantum metamaterial is a one-dimensional set of superconducting qubits in a transmission line. It was shown in experiment that a single qubit in such a line demonstrates all the expected of a pointlike quantum scatterer, with a much stronger coupling to the field than can be achieved with natural atoms in 3D space. Other implementations of quantum metamaterials (like quantum dots placed inside photonic crystals, which would operate in the optical range) are also being considered. <div class="p"><!----></div> In my talk I will discuss some of the unusual properties of a quantum metamaterial, which stem from its being an <em>extended</em> quantum object, and their possible applications. </blockquote> <div class="p"><!----></div> </li> <li> /163/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Jan Martinek</b> <div class="p"><!----></div> Title: <font color="#0000FF">Cooper pair splitting as a source of entangled electrons</font> <div class="p"><!----></div> Authors: Jan Martinek<sup>1</sup>, D. Tomaszewski<sup>1</sup>, M. Czechlewski<sup>1</sup>, P. Ro|ek<sup>1</sup>, R. Zitko<sup>2</sup>, R. Lopez<sup>3</sup>, M. Lee<sup>4</sup>, W. KBobus<sup>5</sup>, A. Grudka<sup>5</sup>, A. Baumgartner<sup>6</sup>, and C. Schonenberger<sup>6</sup> <div class="p"><!----></div> <sup>1</sup>Institute of Molecular Physics, Polish Academy of Sciences, 60-179 Poznan, Poland<br /> <sup>2</sup>Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia<br /> <sup>3</sup>Departament de Fsica, Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain<br /> <sup>4</sup>Department of Physics, Kyung Hee University, Yongin 446-701, Korea<br /> <sup>5</sup>Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 PoznaD, Poland<br /> <sup>6</sup>Department of Physics, University of Basel, CH-4056 Basel, Switzerland <div class="p"><!----></div> <blockquote><b>Abstract:</b> We study an entangled state of spatially separated electrons, in particular its spins, in a solid state electronic system. The ground state of conventional superconductors is a singlet state of electron Cooper pairs that can provide a natural source of entangled electrons. One of the proposals to obtain the nonlocal entanglement of electrons is to use the Cooper pairs split in the Double Quantum Dot (DQD) system using the Coulomb interaction between electrons [1]. We have analyzed an efficiency of the separation of Cooper pairs in systems, where the DQD is connected to the two superconducting leads, or to the superconducting and normal leads [2,3]. Addressing the idea of quantum communication with entangled electrons in a solid state, where ferromagnetic detectors allow for spin correlation detection, we provide, using quantum information theory, a lower bond on the spin polarization of detectors [4]. In ferromagnetic detectors the spin information is transformed into charge information, however, any real magnetic materials feature imperfect spin polarization due to presence of both spin component in density of states at the Fermi surface. We find that lower bond for the spin polarization is p &gt; 58% for detection of entanglement using an optimal entanglement witness [4]. It provides the minimal spin polarization of ferromagnetic materials that can be useful in quantum communication. <div class="p"><!----></div> [1] L. Hofstetter, S. Csonka, J. Nygard, and C. Schnenberger, Nature 461, 960 (2009).<br /> [2] J. Eldridge, M. G. Pala, M. Governale, and J. Knig, Phys. Rev. B 82, 184507 (2010).<br /> [3] R. Zitko, J. Lim, R. Lopez, J. Martinek, P. Simon, Phys. Rev. Lett. 108, 166605 (2012).<br /> [4] W. KBobus, A. Grudka, A. Baumgartner, D. Tomaszewski, C. Schnenberger, and J. Martinek, (in preparation).</blockquote> <div class="p"><!----></div> </li> <li> /162/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Dr Tomasz Polak</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Gauge dependent time of flight patterns in Abelian synthetic magnetic fields</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> I will show how to calculate the time-of-flight patterns of strongly interacting bosons confined in two-dimensional square lattice in the presence of an artificial magnetic field. I will discuss the cases with the artificial magnetic field being uniform, staggered or forming a checkerboard configuration. Effects of additional temporal modulation of the optical potential that results from application of Raman lasers driving particle transitions between lattice sites are also included. The presented time-of-flight patterns may serve as a verification of chosen gauge in experiments, but also provide important hints on unconventional, non-zero momentum condensates, or possibility of observing graphene-like physics resulting from occurrence of Dirac cones in artificial magnetic fields in systems of ultra-cold bosons in optical lattices. Also, I elucidate on differences between effects of magnetic field in solids and the artificial magnetic field in optical lattices, which can be controlled on much higher level leading to effects not possible in condensed matter physics.</blockquote> <div class="p"><!----></div> </li> <li> /161/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Dr Tomasz SowiDski</b> <div class="p"><!----></div> Affiliation: Institute of Physics of the Polish Academy of Sciences, Warsaw, Poland and Center for Theoretical Physics of the Polish Academy of Sciences, Warsaw, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Universality of extended Bose-Hubbard models with local three-body interactions</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Experimental progress on trapping and manipulating ultra-cold atoms confined in optical lattices has opened new perspectives for controlling many-body states of different quantum systems. In the simplest case such systems are described in the context of the Bose-Hubbard (BH) model. In my talk I will consider the class of extended BH models with additional three-body on-site interactions. After short introduction I will divide the talk into two parts: (i) Standard BH with additional three-body term: I will show that the shape of insulating lobes may crucially depend on the three-body interactions and in the case of attractive three-body term may lead to vanishing of the second insulating lobe [1,2]. (ii) Attractive BH model with soft-core three-body repulsion: I will show that the critical behavior of the system undergoing a phase transition from pair-superfluid to superfluid at integer filling depends on the value of the three-body repulsion. In particular, a critical exponent and the central charge governing the quantum phase transitions are shown to have repulsion dependent features. In consequence, the model extends the list of known systems violating the universality hypothesis [3]. <div class="p"><!----></div> [1] T. Sowinski, Phys. Rev. A 85, 065601 (2012).<br /> [2] T. Sowinski, ArXiv:1307.6852 (2013).<br /> [3] T. Sowinski, R. W. Chhajlany, O. Dutta, L. Tagliacozzo, M. Lewenstein, ArXiv:1304.4835 (2013).</blockquote> <div class="p"><!----></div> </li> <li> /160/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Jan Mostowski</b> <div class="p"><!----></div> Affiliation: Institute of Physics, Polish Academy of Sciences, Warsaw, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Time crystals</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> A system of two charged particles in a harmonic trap with additional magnetic field is considered. The problem is reduced to a single-particle one in relative coordinates. The ground- and lowest excited-state energies and wave functions are found. The ground state exhibits non-zero expectation value of the velocity (kinetic momentum) and the probability current density does not vanish as well. When the ground state becomes degenerate the expectation value of velocity becomes discontinuous. The effects associated with turning on of the magnetic field are studied by solving the appropriate time-dependent Schroedinger equation. No substantial differences between abrupt (discontinuous in time) and continuous switching on have been observed. Evolution of a wave packet which is initially Gaussian is also investigated. The wave packet loses its Gaussian nature and, after sufficiently large time, a system of diffractive maxima and minima is built.</blockquote> <div class="p"><!----></div> </li> <li> /159/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Karol {yczkowski</b> <div class="p"><!----></div> Affiliation: Jagiellonian University, Krakow &amp; Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Measuring the degree of quantum entanglement</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Measures of quantum entanglement are reviewed and compared. We focus quantities characterizing entanglement which could be experimentally accessible. A quantity called 'collectibility' is proposed which can be determined in a coincidence experiment involving two copies of the state analyzed. Our approach, initially designed for the case of pure states, works also in the general case of mixed quantum states of a multi-partite system.</blockquote> <div class="p"><!----></div> </li> <li> /158/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. PaweB Horodecki</b> <div class="p"><!----></div> Affiliation: Faculty of Applied Physics and Mathematics, Technical University of GdaDsk and National Quantum Information Centre in Sopot, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Device independent arbitrary weak randomness amplification with noise tolerance</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Recently the protocols of randomness amplification have been introduced secure against quantum and no-signaling adversaries. Here we present the first fully constructive proof of existence of the protocol that is secure against general no-signaling adversary and amplifies arbitrary small randomness (in standard terms of Santha-Vazirani source) in a fully device independent way. The protocol tolerates some amount of noise depending among others on the initial randomness that is to be amplified.</blockquote> <div class="p"><!----></div> </li> <li> /157/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Marek Ku[</b> <div class="p"><!----></div> Affiliation: Center for Theoretical Physics, Polish Academy of Sciences, Warsaw, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Engineering SU(3) models: trapped ions, quantum chaos, classical limit(s)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> One of the current trends in quantum physics is the quest for controllable quantum many-body systems which can be used as quantum simulators. In particular, there is a growing interest in simulating spin and quantum magnetism. In recent years, the focus is moving from SU(2) spins towards SU(N)-symmetric models. The SU(3) systems, having their origin in nuclear physics, were a fruitful playground for quantum chaos investigations, in particular due to they reach possible behavior in the classical limit. Now it seems to be possible to realize such models experimentally with trapped ions providing a large degree of control from the experimental point of view.</blockquote> <div class="p"><!----></div> </li> <li> /156/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Werner Vogel</b> <div class="p"><!----></div> Title: <font color="#0000FF">Unified representation of nonclassicality and entanglement</font> <div class="p"><!----></div> Authors: Werner Vogel and Jan Sperling <div class="p"><!----></div> Arbeitsgruppe Quantenoptik, Institut f&#252;r Physik, Universit&#228;t Rostock, D-18051 Rostock, Germany <div class="p"><!----></div> <blockquote><b>Abstract:</b> In Quantum Optics the widely used definition of nonclassicality is based on the Glauber-Sudarshan P function [1]. If the P function has the properties of a classical probability density, the state is a classical mixture of coherent states. In any other case, the quantum state clearly shows quantum interference effects. In general, the P function is strongly singular and, hence, not applicable in experiments. A universal regularization resolves this problem [2], as it was demonstrated in experiments. In view of its structure [3], entanglement can also be visualized by quasiprobabilities. This requires an optimization based on the solution of the separability eigenvalue problem [4]. Its extension to the multipartite case yields multipartite entanglement witness for complex quantum states [5]. To characterize general quantum correlations, the concept of the P function was extended to a functional [6]. Its regularized version visualizes quantum correlations, even when the state is not entangled and has zero quantum discord [7]. <div class="p"><!----></div> [1] E. C. G. Sudarshan, Phys. Rev. Lett. 10, 277 (1963); R. J. Glauber, Phys. Rev. 131, 2766 (1963).<br /> [2] T. Kiesel and W. Vogel, Phys. Rev A 82, 032107 (2010).<br /> [3] R. F. Werner, Phys. Rev. A 40, 4277 (1989).<br /> [4] J. Sperling and W. Vogel, Phys. Rev. A 79, 042337 (2009).<br /> [5] J. Sperling and W. Vogel, Phys. Rev. Lett. 111, 110503 (2013).<br /> [6] W. Vogel, Phys. Rev. Lett. 100, 013605 (2008).<br /> [7] E. Agudelo, J. Sperling, and W. Vogel, Phys. Rev. A 87, 033811 (2013).</blockquote> <div class="p"><!----></div> </li> <li> /155/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Andrzej Grudka</b> <div class="p"><!----></div> Title: <font color="#0000FF">Universal scheme for violation of local realism from quantum advantage in one-way communication complexity</font> <div class="p"><!----></div> Authors: L. Czekaj<sup>1</sup>, A. Grudka<sup>2</sup>, M. Horodecki<sup>1</sup>, P. Horodecki<sup>3</sup>, and M. Markiewicz<sup>1</sup> <div class="p"><!----></div> <sup>1</sup>Faculty of Mathematics, Physics and Informatics, GdaDsk University, 80-952 GdaDsk,Poland<br /> <sup>2</sup>Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 PoznaD, Poland<br /> <sup>3</sup>Faculty of Applied Physics and Mathematics, GdaDsk University of Technology, 80-952 GdaDsk, Poland <div class="p"><!----></div> <blockquote><b>Abstract:</b> We consider relations between communication complexity problems and detecting correlations (violating local realism) with no local hidden variable model. We show first universal equivalence between characteristics of protocols used in that type of problems and non-signaling correlations. We construct non linear bipartite Bell type inequalities and strong nonlocality test with binary observables by providing general method of Bell inequalities construction and showing that existence of gap between quantum and classical complexity leads to violation of these inequalities. We obtain, first to our knowledge, explicit Bell inequality with binary observables and exponential violation.</blockquote> <div class="p"><!----></div> </li> <li> /143/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Dariusz Chru[ciDski</b> <div class="p"><!----></div> Affiliation: Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudzidzka 5, 87-100 ToruD, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Non-Markovian quantum dynamics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We discuss recent concepts of non-Markovianity of quantum evolution. The discussion is illustrated by simple examples (pure decoherence, amplitude damping and random unitary dynamics).</blockquote> <div class="p"><!----></div> </li> <li> /153/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Marek {ukowski</b> <div class="p"><!----></div> Title: <font color="#0000FF">Generalized Hardy correlations and quantum communication problems</font> <div class="p"><!----></div> Authors: Ramij Rahaman, Marcin Wie[niak, and Marek {ukowski <div class="p"><!----></div> <blockquote><b>Abstract:</b> We present multi-partite Hardy-type test against local realism. For n qubit systems, we prove the uniqueness and purity of the Hardy state (that is the one that satisfies Hardy conditions), and its genuine n-partite entanglement. We show an that Hardy correlations allow one to find solutions to some quantum communication problems. As an example we present a secure quantum scheme for the original <em>Byzantine Generals</em> problem. Our protocol is based on Hardy's paradox, which uses a set of conditions impossible for classical systems, but satisfied by a unique quantum two-particle state, and on entanglement swapping methods.</blockquote> <div class="p"><!----></div> </li> <li> /152/ <div class="p"><!----></div> Date: Wednesday 2013.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Ryszard Horodecki</b> <div class="p"><!----></div> Affiliation: Instytut Fizyki Teoretycznej i Astrofizyki, Uniwersytet GdaDski, 80-952 GdaDsk oraz Krajowe Centrum Informatyki Kwantowej w GdaDsku, 81-824 Sopot, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Objectivity from first principles - new role of broadcasting structure</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Incessant run of successes of quantum mechanics suggests that quantum formalism plays decisive role in the description of physical phenomena. It leads inevitably to the problem: How does Nature create a "foot-bridge" from fragile quanta to the objective world of everyday experience? The subject of the talk will provide an answer to this fundamental issue. We will show how a crucial for quantum mechanics notion of non-disturbance due to Bohr and a natural definition of objectivity lead to a canonical spectrum broadcasting structure of a quantum system-environment state, reflecting objective information records about the system stored in the environment.</blockquote> <div class="p"><!----></div> </li> <li> /151/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Tadeusz Lulek</b> <div class="p"><!----></div> Affiliation: Mathematical Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Nonlinear magnetooptics, symmetry breakings and ascents, and the magnetic translation groups</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This commemoration intertwines between various physical ideas (as presented in the title), shared within the scientific works of Professors: StanisBaw Kielich, Louis Michel, Jan Mozrzymas, Joshua Zak, Marian Surma, and others. It goes from experimental studies on Cotton-Mouton effect (heavy electromagnesses in the basements of Collegium Chemicum), through symmetry considerations in phase transitions (nematics, smectics, etc., mainly breaking of symmetry, but, somehow exceptionally, also ascent), to the magnetic translation group as a mathematical tool for the Bohm-Aharonov effect (everybody knows Landau levels of a free two-dim electron gas, and the magnetic translation group serves as an equivalent for the case of itinerant electrons, with its irreducible representations labeling the levels, and the basis functions describing degenerate cyclotronic orbits). Nowadays, these ideas can be converted to "reality" within nanotechnology, e. g. magnetic quantum dots.</blockquote> <div class="p"><!----></div> </li> <li> /150/ Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Anna Zawadzka</b> <div class="p"><!----></div> Affiliation: Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudzidzka 5, 87-100 ToruD, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Nonlinear optical properties of organometallic thin films</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This work contains investigation results of the structural and nonlinear optical properties of organometallic thin films and nanostructures. The films and nanostructures were successfully grown by Physical Vapor Deposition technique in high vacuum on transparent (quartz, glass) and semiconductor (n-type silica) substrates kept at room temperature during the deposition process. Selected films were annealed after fabrication in ambient atmosphere for 24 hours at the temperature in the range from 50<sup>o</sup>C to 250<sup>o</sup>C. Spectral properties were examined using transmission, photoluminescence, Second and Third Harmonic Generation's techniques. The experimental spectra were allowed to determine optical constant of the films. Structural properties were investigated by AFM measurements. The organometallic films and nanostructures exhibit high structural quality regardless of the annealing process, but the stability of the film can be improved by using an appropriate temperature during the annealing process. We find that the optical properties were strictly connected with the morphology and the annealing process can significantly change the structural properties of the films and lead to the formation of various nanostructures.</blockquote> <div class="p"><!----></div> </li> <li> /149/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. MaBgorzata Makowska-Janusik</b> <div class="p"><!----></div> Affiliation: Institute of Physics, Jan DBugosz University, Czstochowa, Poland <div class="p"><!----></div> Title: <font color="#0000FF">Macroscopic optical properties of composite materials - computational approach</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> One of the possibilities to obtain efficient and stable nonlinear optical (NLO) material is to dope an amorphous polymer with organic donor-acceptor molecules forming a composite. The appropriate material for the first NLO effect as persistent second harmonic generation (SHG) requires large number of polarizable molecules embedded in polymeric matrix preventing polar orientation. The polar orientation may be induced by external electric field at the temperatures where the matrix is sufficiently mobile to allow fast alignment of the dopants. The experimental explanation of the origin of their NLO response is very difficult because optical susceptibilities are measured in condensed matter where the molecular properties are affected by the host matrix. Molecular simulations can help to explain the nature of the guest-host interaction and separate the different contribution of the material to the optical output signal. A goal of many theoretical works is to find appropriate model describing optical properties of molecules incorporated into polymeric environment. <div class="p"><!----></div> In the presented work linear and nonlinear optical susceptibilities of guest-host polymer systems were calculated applying the hierarchic procedure . The wild variety of chromophores characterized by different size, shape and charge distribution incorporated into different polymer matrix were studied. First of all the structures of the investigated systems have been modeled by molecular dynamic simulations applying molecular mechanics CVFF force field method. The obtained structures are amorphous. Investigations of radial distribution function prove that location of chromophores in polymeric matrix is an intrinsic property of polymer. The motion of polymer chain allows a rotation of dopants under influence of an external electric field. <div class="p"><!----></div> The electronic properties of the NLO chromophores were computed at the HF and DFT level using different exchange - correlation potentials. These properties were investigated for the isolated NLO molecules as well as for the ones in polymer environment. In the second case the first-order susceptibilities corresponding to SHG were calculated using discrete local field approach. The implemented method is very efficient to the molecules with high charge transfer effect and give the data approximately consistent with the experimental results. It was also proved that the optical response, especially NLO output signal of chromophores embedded into polymeric matrix, depends on their local environment. </blockquote> <div class="p"><!----></div> </li> <li> /148/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Jean-Luc Godet</b> <div class="p"><!----></div> Affiliation: University of Angers, UFR Sciences Institute of Sciences and Molecular Technologies of Angers, France <div class="p"><!----></div> Title: <font color="#0000FF">A short historical recall about the story of the concept of refractive index: From the Antique to the 19th century.</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The research of a refraction law played a major role in the development of the optics since the first attempts of Ptolemy until the more accomplished results of Ibn Sahl, Snel or Descartes. However, it is necessary to wait for the beginning of the XIXth century, much later than the theory of colours of Newton and thanks to the researches on the achromatic glasses, so that emerges the concept of refractive index and so that it begins to be understood well. We propose a historical reminder and an outline of the obstacles and epistemological advances which allowed to establish it.</blockquote> <div class="p"><!----></div> </li> <li> /147/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Jerzy Warczewski</b> <div class="p"><!----></div> Title: <font color="#0000FF">Spin glass state and other magnetic structures with their symmetries in terms of the Fibre Bundle Approach</font> <div class="p"><!----></div> Authors: Jerzy Warczewski<sup>1</sup>, PaweB Gusin<sup>2</sup> and Daniel Wojcieszyk<sup>1</sup> <div class="p"><!----></div> <sup>1</sup>University of Silesia, Institute of Physics, 40-007 Katowice, Poland<br /> <sup>2</sup>University of WrocBaw, Institute of Theoretical Physics, 50-204 WrocBaw, Poland <div class="p"><!----></div> <blockquote><b>Abstract:</b> The fibre bundle approach [1] has been applied to the unified description of all the eight fundamental magnetic structures and their symmetry groups [2]. On this basis the explicit formulas describing both the variety of magnetic structures and their symmetry groups have been derived. In the particular case of the spin glass state (SGS) the global magnetic coupling constant has been interpreted as a section of the corresponding fibre bundle. The fibre of this bundle makes the space of the Gaussian distributions. Thus one can say that the randomness of the distribution of both the magnetization and the individual magnetic moments in the SGS is of the Gaussian-like character. An observation was made that another kind of the fibre bundle sections make the magnetization vectors <b>M</b> multiplied by a certain Gaussian factor defined in R<sup>3</sup>, the last factor making the problem continuous and more physical [3, 4]. In one of the previous papers the authors have proved that an internal spontaneous magnetic field H<sub>int</sub> is necessary for the SGS to be stable and just to exist [5]. For the angle between <b>M</b> and H<sub>int</sub> equal to &#981; one can say that at &#981;=const any rotation (precession) of <b>M</b> around the direction of H<sub>int</sub> makes the operation of symmetry of the SGS. Thus the magnetic symmetry group of SGS turns out to be SO(2). The role of both the H<sub>int</sub> and the external magnetic field H<sub>ext</sub> as well as of the average kinetic energy E<sub>kin</sub> of the separate magnetic atoms in the explanation of the experimental temperature dependencies of susceptibility is shown. Thus the fibre bundle approach equates the method of the symmetry analysis of magnetic structures with the method of the higher dimensional embeddings of the modulated structures. The symmetry groups appearing in the method of the symmetry analysis become the structural groups of the bundles. From the other side a higher dimensional space needed to the description of a modulated structure makes here the total space of the bundle. Thus these three methods, namely <em>the symmetry analysis, the higher dimensional embeddings</em> and <em>the fibre bundles</em> are equivalent. The analogous situation is with the description of the magnetic structures with the use of the spin groups, where an additional type of symmetry is introduced. Note that the Gaussian factor introduced above plays a double role: it makes the vector <b>M</b> to be a field and simultaneously makes the description of the magnetic structures more physical [6, 7]. It seems that the fibre bundle approach could serve also for the description of the symmetry groups of all the other aperiodic structures, like e.g. the modulated nonmagnetic structures, quasicrystals (nonmagnetic and magnetic) etc. It is worthwhile to mention here that these different magnetic structures under consideration have been found by the authors to be related with the values of the certain topological invariants [8].</blockquote> <div class="p"><!----></div> [1] Sulanke, R. Wintgen, P., Differentialgeometrie und Faserbundel, Berlin (1972)<br /> [2] J. Warczewski, P. Gusin, D. Wojcieszyk, Mol. Cryst. Liq. Cryst. 554 (2012), 209-220<br /> [3] J. Warczewski, P. Gusin et al. Central European Journal of Physics 5(3) 2007 377-384<br /> [4] P. Gusin and J. Warczewski, Mol. Cryst. Liq. Cryst. Vol. 521: pp. 288-292, 2010<br /> [5] J. Warczewski, P. Gusin et al., J. Phys.: Condens. Matter, 21 (2009) pp. 035402- 035407<br /> [6] J. Warczewski, J. Krok-Kowalski, P. Gusin et al., J. of Non-Linear Optics, Quantum Optics, Vol. 30, (2003) pp. 301-320<br /> [7] J. Warczewski, J. Krok-Kowalski, P. Gusin et al., Journal of Physics and Chemistry of Solids 66 (2005) 2044-2048<br /> [8] P. Gusin and J. Warczewski, J. of Magn. and Magn. Mat., 2004, 28(1/2-3), 178-187 <div class="p"><!----></div> </li> <li> /146/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Igor Lyubchanskii</b> <div class="p"><!----></div> Title: <font color="#0000FF">Nonlinear magneto-optical ellipsometry</font> <div class="p"><!----></div> Authors: Yu. S. Dadoenkova<sup>1</sup>, I. L. Lyubchanskii<sup>1,2</sup>, Y.P. Lee<sup>3</sup>, and Th. Rasing<sup>4</sup> <div class="p"><!----></div> <sup>1</sup>Donetsk Physical and Technical Institute of the National Academy of Sciences of Ukraine, 83114, Donetsk, Ukraine<br /> <sup>2</sup>Department of Physics and Technology, Donetsk National University, 83001, Donetsk, Ukraine<br /> <sup>3</sup>Quantum Photonic Science Research Center (q-Psi) and Hanyang University, 133-791, Seoul, Republic of Korea<br /> <sup>4</sup>Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ, Nijmegen, the Netherlands <div class="p"><!----></div> <blockquote><b>Abstract:</b> The ellipsometric parameters for light reflection from a dielectric film with Kerr optical nonlinearity on a bigyrotropic magneto-electric film are theoretically investigated. The combined contributions of the cubic optical nonlinearity and the magneto-electric coupling allows to control the ellipsometric parameters and thus for example the Kerr rotation with the incoming light intensity, in particular at incidence angles close to the pseudo-Brewster angle.</blockquote> <div class="p"><!----></div> </li> <li> /145/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Georges Boudebs</b> <div class="p"><!----></div> Affiliation: Laboratoire de photonique d'Angers (LPhiA), University d'Angers, France <div class="p"><!----></div> Title: <font color="#0000FF">Optical nonlinear characterization using imaging technique in a 4f-Z-scan system</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We show that the direct measurement of the beam radius in Z-scan experiments using a CCD camera at the output of a 4f-imaging system allows a higher sensitivity and a better accuracy than other methods. One of the advantages is to be insensitive to pointing instability of the pulsed laser because no hard aperture is employed as in the usual Z-scan. In addition, the numerical calculations involved here and the measurement of the beam radius are simplified since we do not measure the transmittance through an aperture and it is not subject to mathematical artefacts related to a normalization process, especially when the diffracted light is very low. <div class="p"><!----></div> <b>Keywords:</b> Nonlinear optics, Z-scan, diffraction, image processing, Fourier optics</blockquote> <div class="p"><!----></div> </li> <li> /144/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. DobrosBawa Kasprowicz</b> <div class="p"><!----></div> Title: <font color="#0000FF">Opportunities for Bi<sub>2</sub>ZnOB<sub>2</sub>O<sub>6</sub> single crystals: Second and third order nonlinear optical applications</font> <div class="p"><!----></div> Authors: D. Kasprowicz<sup>1</sup>, K. Iliopoulos<sup>2</sup>, A. Majchrowski<sup>3</sup>, and B. Sahraoui<sup>2</sup> <div class="p"><!----></div> <sup>1</sup>Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13 A, 60-965 Poznan, Poland<br /> <sup>2</sup>LUNAM Universit, Universit d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 Bd Lavoisier, 49045 Angers Cedex, France<br /> <sup>3</sup>Institute of Applied Physics, Military University of Technology, Kaliskiego 2, 00 - 908 Warszawa, Poland <div class="p"><!----></div> <blockquote><b>Abstract:</b> Bi<sub>2</sub>ZnOB<sub>2</sub>O<sub>6</sub> nonlinear optical single crystals were grown by means of the Kyropoulos method from stoichiometric melt. The SHG and THG response of the Bi<sub>2</sub>ZnOB<sub>2</sub>O<sub>6</sub> crystal was studied by the Maker fringes techniques. Moreover SHG microscopy studies were carried out providing two-dimensional SHG images as a function of the incident laser polarization. The crystals have been shown to have high SHG and THG efficiency, comparable with those of well-known crystals such as BBO, KDP, KTP, which makes them very attractive materials for NLO applications. The high nonlinear optical efficiency combined with the possibility to grow high quality crystals make Bi<sub>2</sub>ZnOB<sub>2</sub>O<sub>6</sub> an excellent candidate for photonic applications.</blockquote> <div class="p"><!----></div> </li> <li> /143/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. George Maroulis</b> <div class="p"><!----></div> Affiliation: Department of Chemistry, University of Patras, Greece <div class="p"><!----></div> Title: <font color="#0000FF">Quantifying the performance of quantum chemistry methods</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We present a general method for the quantification of the performance of quantum chemical methods over an arbitrary collection of atomic/molecular properties. Our approach relies on the Minkowski metric, graph theoretic concepts and pattern recognition techniques. The method should be of interest as a rigorous approach to the introduction of order and classification in spaces of theoretical descriptions. We show how it can be used to quantify the relative merit of ab initio and DFT methods.</blockquote> <div class="p"><!----></div> </li> <li> /142/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Keith Gubbins</b> <div class="p"><!----></div> Affiliation: Department of Chemical &amp; Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, U.S.A. <div class="p"><!----></div> Title: <font color="#0000FF">The Theory of Polar Liquids and Their Mixtures: A Historical Review</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The primary goal of a theory of liquid mixtures is to determine, using statistical mechanics, how the structure and free energy varies with the composition, and with the chemical composition of its components. Such a theory provides the key to the determination of dielectric and spectral properties, phase transitions, critical points, solubilities, immiscible regions, metastable and unstable regions, etc. <div class="p"><!----></div> Theories proposed in the first half of the 20th century were, for the most part, lattice theories, and many of these are described in the books by Guggenheim [1] and Prigogine [2]. These early theories pre-dated molecular simulations and the availability of electronic computers, so that they were  tested by direct comparison with experimental data. Since such comparisons, in the case of the lattice theories, involved adjustment of various parameters to experimental data, these tests were of dubious value. Once molecular simulation data became available in the early 1960 s these theories were shown to be in serious error, and can now be considered to be extinct. <div class="p"><!----></div> Modern theory of polar liquids (the last 60 years) has followed a dual path. The first has been perturbation theory, in which the free energy and other properties of the solution of interest are related to those of a simpler solution having simple intermolecular forces, for example hard spheres or Lennard-Jones mixtures. Perturbation theory has been particularly successful for thermodynamic properties. The theory of Wertheim [3], relates the free energy of a polar or associating fluid to that of a hard body (non-associating) fluid through a clever resummation of a cluster series for the free energy. It and its later extensions are finding widespread practical application [4]. <div class="p"><!----></div> The second route to a theory of polar liquids has been integral equation theory, which yields the structure in the form of distribution functions [5]. Although less successful than the perturbation theories for thermodynamic properties, integral equation theories have been successful for other properties, in particular dielectric and spectral properties. <div class="p"><!----></div> <b>References</b><br /> [1] E.A. Guggenheim,  Mixtures , Clarendon Press, Oxford, 1952.<br /> [2] I. Prigogine,  The Molecular Theory of Solutions , North-Holland Pub. Co., Amsterdam, 1957.<br /> [3] Wertheim, M.S. J. stat. Phys. 35, 19 (1984); ibid. 35, 35 (1984); ibid. 42, 459 (1986); ibid. 42, 477 (1986).<br /> [4] For reviews of the theory and its extensions, and practical applications, see: Mller, E.A. and Gubbins, K.E. Ind. Engng. Chem. Research, 40, 2193 (2001); Tan, S.P., Adidharma, H. and Radosz, M., Ind. Eng. Chem. Research, 47, 8063 (2008).<br /> [5] C.G. Gray and K.E. Gubbins, Theory of Molecular Fluids. I. Fundamentals, Chap. 5, Oxford University Press (1984); C.G. Gray, K.E. Gubbins and C.G. Joslin, Theory of Molecular Fluids. II. Applications, Chap. 9-11, Oxford University Press (2011).</blockquote> <div class="p"><!----></div> </li> <li> /141/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Prof. Tadeusz Hilczer</b> <div class="p"><!----></div> Affiliation: Division of Dielectrics Physics, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">The early days of physics of dielectrics in PoznaD</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Physics of dielectrics started in PoznaD when professor Arkadiusz Piekara took chair in Experimental Physics at the PoznaD University in 1952. At the beginning a lot of effort was taken to prepare the measuring basis, that is to construct the measuring condensers, Schering bridges, resonance circuits, heterodyne beat apparatus (&#8710;C/C &#8776; 10<sup>&#8722;6</sup>), to purifying liquid dielectrics and to synthesize ferroelectrics. Later, professor Piekara got StanisBaw Kielich interested in theoretical approach to the physics of dielectrics and his Master of Science dissertation in 1955 can be considered as the beginning of the work of young PoznaD staff in theory of dielectrics.</blockquote> <div class="p"><!----></div> </li> <li> /140/ <div class="p"><!----></div> Date: Tuesday 2013.10.15 <div class="p"><!----></div> Speaker: <b>Ms. Natalia Kielich-Buchowska, Prof. Tadeusz Bancewicz<sup>1</sup>, and Prof. Ryszard Tana[<sup>1</sup></b> <div class="p"><!----></div> Affiliation: <sup>1</sup>Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">StanisBaw Kielich - a few words about his life</font> <div class="p"><!----></div> </li> <li> /139/ <div class="p"><!----></div> Date: Wednesday 2013.06.19 <div class="p"><!----></div> Speaker: Dr <b>Semanti Pal</b> <div class="p"><!----></div> Affiliation: Thematic Unit of Excellence on Nanodevice Technology and Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic sciences, Block JD, Sec III, Salt Lake, Kolkata 700098, India <div class="p"><!----></div> Coauthors: Saswati Barman, Olav Hellwig, and Anjan Barman <div class="p"><!----></div> Title: <font color="#0000FF">Effect of the Spin-Twist Structure on the Spin-Wave Dynamics of the Fe55Pt45/Ni80Fe20 Exchange Coupled Bi-layers with varying Ni80Fe20 Thickness</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We have investigated optically induced ultrafast magnetization dynamics of a series of Fe55Pt45/Ni80Fe20 exchange spring bi-layers with varying Ni80Fe20 thickness by time-resolved magneto-optical Kerr effect measurements. Rich spin wave spectra are observed and the spin-wave frequency shows a strong dependence on the Ni80Fe20 layer thickness. Micromagnetic simulations reproduced the experimental data qualitatively after considering pinning of spins at the Fe55Pt45/ Ni80Fe20 interface and an effective magnetic field gradient across the thickness of the Ni80Fe20 layer. The spin twist structure introduced in the Ni80Fe20 layer gives rise to new modes in the composite system as opposed to the bare Ni80Fe20 films.</blockquote> <div class="p"><!----></div> </li> <li> /138/ <div class="p"><!----></div> Date: Wednesday 2013.06.05 <div class="p"><!----></div> Speaker: <b>Prof. Andrzej Grudka</b> <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Randomness amplification based on no-signaling principle (Wzmacnianie losowo[ci w oparciu o zasad niesygnalizowania)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We analyze the protocol of randomness amplification using Bell inequality violation in terms of the convex combination of no-signaling boxes required to simulate quantum violation of the inequality. We present intuitive proof for the range of partial randomness from which perfect randomness can be extracted using quantum correlations violating the chain inequalities. We derive exact values in the asymptotic limit of a large number of measurement settings.</blockquote> <div class="p"><!----></div> </li> <li> /137/ <div class="p"><!----></div> Date: Wednesday 2013.05.29 <div class="p"><!----></div> Speaker: Dr hab. <b>Ireneusz Weymann</b> <div class="p"><!----></div> Affiliation: Mesoscopic Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Dynamics in single impurity Anderson model: Testing the eigenstate thermalization hypothesis</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We analyze the eigenstate thermalization hypothesis (ETH) for the single impurity Anderson model, focusing on the Kondo regime. For this we construct the complete eigenbasis of the Hamiltonian using the numerical renormalization group method in the language of the matrix product states. We calculate the spectral function of the quantum impurity (a quantum dot) for the ground state and several excited states of the system using the microcanonical and diagonal ensembles. These spectral functions are compared to the time-averaged spectral function obtained by time-evolving the initial state according to the full Hamiltonian and to the spectral function calculated using the thermal density matrix. We find good agreement between the spectral functions calculated this way, which indicates that the process of thermalization happens at the level of individual eigenstates, indeed. We also discuss the behavior of the spectral functions calculated for states with the bath initially in its ground state. In certain cases then, this mandates the alternative interpretation in terms of a quantum quench. The distinctive features as compared to ETH are highlighted.</blockquote> <div class="p"><!----></div> </li> <li> /136/ <div class="p"><!----></div> Date: Wednesday 2013.05.22 <div class="p"><!----></div> Speaker: <b>Prof. MichaB Banaszak</b> <div class="p"><!----></div> Affiliation: Quantum Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Simple model of transport in biological cells</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Physical-chemical reasoning is used to demonstrate that the sizes of both prokaryotic and eukaryotic cells are such that they minimize the times needed for the macromolecules to migrate throughout the cells and interact/react with one another. This conclusion does not depend on a particular form of the crowded-medium diffusion model, as thus points toward a potential optimization principle of cellular organisms. In eukaryotes, size optimality renders the diffusive transport as efficient as active transport - in this way, the cells can conserve energetic resources that would otherwise be expended in active transport.</blockquote> <div class="p"><!----></div> </li> <li> /135/ <div class="p"><!----></div> Date: Wednesday 2013.05.15 <div class="p"><!----></div> Speaker: Dr <b>Barbora Lemrov</b> <div class="p"><!----></div> Affiliation: Department of Organic Chemistry, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">BIOMEDREG - bio-sciences centre in Olomouc</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Biomedreg is a collaboration project to join several bio-sciences groups. This centre provides research activities ranging from organic synthesis to medicinal research.</blockquote> <div class="p"><!----></div> </li> <li> /134/ <div class="p"><!----></div> Date: Wednesday 2013.05.15, 12:30 <div class="p"><!----></div> Speaker: Dr <b>Karel Lemr</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Regional Centre of Advanced Technologies and Materials</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk will provide an overview of the RCPTM - a regional centre of scientific collaboration across various natural sciences (physics, chemistry, nanomaterials). The capabilities in contract and collaboration research will be presented.</blockquote> <div class="p"><!----></div> </li> <li> /133/ <div class="p"><!----></div> Date: Wednesday, 2013.5.8 <div class="p"><!----></div> Speaker: <b>Prof. Adekunle Adeyeye</b> <div class="p"><!----></div> Affiliation: Departament of Electrical Computer Engineering, National University of Singapore, Singapore. <div class="p"><!----></div> Title: <font color="#0000FF">Artificial Ferromagnetic Nanostructures: An Experimental Platform for Magnonics</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Artificial ferromagnetic nanostructures with periodic lateral contrasts in magnetization are known as  magnonic crystals (MCs), conceived as the magnetic analogue of photonic crystals. Recently, there is growing interest in the fundamental understanding of the spin wave propagation in MCs because of their huge potential in a wide range of applications such as microwave resonators, filters and spin wave logic devices. With advances in controlled nanofabrication techniques, it is now possible to synthesize high-quality periodic bi-component magnetic nanostructures with precisely controlled dimensions. The band spectrum of MCs consists of allowed states magnonic bands and forbidden states (magnonic gaps) that can be tuned by magnetic fields or geometrical parameters. We have shown that MCs represent a perfect system for studying excitations on disordered periodical lattices because of the possibility of controlled variation in the degree of disorder by varying the applied magnetic field [1]. We have also demonstrated functionality of magnetic logic based on a reconfigurable MC in the form of a meander-type ferromagnetic nanowire [2]. A ferromagnetic resonance method employing a microscopic coplanar waveguide was used to detect the logic state of the structure coded in its magnetic ground state. <div class="p"><!----></div> This talk will be divided into 3 parts: the first part will focus on strategies we have developed for synthesizing high-quality 1-D and 2-D MCs using deep ultra-violet lithography technique at 248 nm exposure wavelength. Using resolution enhancement techniques, we have fabricated arrays of ferromagnetic nanostructures with lateral dimensions and inter-element spacing below the conventional resolution limit of optical lithography tools. The second part will focus on results of our recent systematic investigation of both the static and dynamic properties of MCs using a combination of magneto-optical Kerr effect measurements, magnetic force microscopy, broadband ferromagnetic resonance spectroscopy, magneto transport measurements and micromagnetic simulations. In the third part, the concept of binary magnetic nanostructures will be introduced and their potential application in magnetic logic devices demonstrated. <div class="p"><!----></div> [1] J. Ding, M. Kostylev, and A. O. Adeyeye, Physical Review Letters 107,047205 (2011).<br /> [2] J. Ding, M. Kostylev, and A. O. Adeyeye, Applied Physics Letters 100, 062401 (2012).</blockquote> <div class="p"><!----></div> </li> <li> /132/ <div class="p"><!----></div> Date: Tuesday 2013.04.30 <div class="p"><!----></div> Speaker: Dr <b>Karol Bartkiewicz</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Measuring nonclassical correlations of two-photon states</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The threshold between classical and nonclassical two-qubit states is drawn at the place when these states can no longer be described by classical correlations, i.e., quantum discord or entanglement appear. However, to check if the correlations are classical (in terms of quantum discord and entanglement) it is sufficient to witness the lack of quantum discord because its zero value implies the lack of entanglement. We explain how the indicator of quantum discord introduced by Girolami and Adesso [Phys. Rev. Lett. 108, 150403 (2012)] can be practically measured in linear-optical systems using standard beam splitters and photon detectors. We also show how to the setup can be modified to efficiently investigate the degree of Bell-CHSH inequality violation.</blockquote> <div class="p"><!----></div> </li> <li> /131/ <div class="p"><!----></div> Data: Zroda 2013.04.24 <div class="p"><!----></div> Prelegent: <b>Dr JarosBaw W. KBos</b> <div class="p"><!----></div> Afiliacja: ZakBad Fizyki NanomateriaBw, WF UAM <div class="p"><!----></div> TytuB: <font color="#0000FF">Periodyczne heterostruktury pBprzewodnikowe jako aktywne elementy ogniw sBonecznych<br />(Semiconductor superlattices applied to intermediate band solar cells)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Periodyczne heterostruktury pBprzewodnikowe s ukBadami z podwjn periodyczno[ci. Periodyczno[ sieci krystalicznej powoduje powstanie przerwy energetycznej (o szeroko[ci od uBamka eV do pojedynczych eV), ktra w litym materiale wyraznie rozdziela prawie caBkowicie obsadzone pasmo walencyjne do prawie pustego pasma przewodnictwa. Wprowadzenie periodycznej strukturalizacji, np. poprzez wytworzenie heterostruktury pBprzewodnikowej, o okresie rzdu kilku lub kilkudziesiciu nm prowadzi do wytworzenia miniprzerw energetycznych w obrbie wierzchoBka pasma walencyjnego i dna pasma przewodnictwa o szeroko[ciach istotnie mniejszych od szeroko[ci przerwy energetycznej litego pBprzewodnika. Stany elektronowe i dziurowe o energiach bliskich dna pasma przewodnictwa i wierzchoBkowi pasma walencyjnego mog by opisane w przybli|eniu kp za pomoc rwnania Schrodingera ze zmienn przestrzennie mas efektywn no[nika, odpowiednio, elektronw i dziur.<br /> Rozdzielanie pasma przewodnictwa i pasma walencyjnego na minipasma mo|e zwikszy efektywno[ produkcji par elektron-dziura przy absorpcji [wiatBa sBonecznego. Efekt ten wynika z ograniczenia procesw termalizacji oraz z pojawienia si nowych przej[ pomidzy minipasmami. Zostan przedstawione wyniki obliczeD teoretycznych efektywno[ci ogniw sBonecznych dziaBajcych w oparciu o dwuwymiarowe periodyczne heterostruktury pBprzewodnikowe na bazie AsGa/AlGaAs dla r|nych geometrii rozwa|anych ukBadw.</blockquote> <div class="p"><!----></div> </li> <li> /130/ <div class="p"><!----></div> Data: Zroda 2013.04.17 <div class="p"><!----></div> Afiliacja: ZakBad Fizyki Matematycznej (Mathematical Physics Division), WF UAM <div class="p"><!----></div> Prelegent: <b>Prof. Maciej BBaszak</b> <div class="p"><!----></div> TytuB: <font color="#0000FF">Jak kanonicznie kwantowa mechanik hamiltonowsk we wspBrzdnych krzywoliniowych? <br />(Canonical quantization of Hamiltonian mechanics in curvilinear coordinates)</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Prezentowana jest niezmiennicza procedura kwantyzacji na przestrzeni fazowej oraz jej niezmiennicza reprezentacja operatorowa w przestrzeni Hilberta nad pBask przestrzeni konfiguracyjn. W konsekwencji pokazana jest konstrukcja poprawnych operatorw poBo|enia i pdu dla kanonicznych zmiennych krzywoliniowych oraz ich odpowiedni porzdek w hamiltonianie.</blockquote> <div class="p"><!----></div> </li> <li> /129/ <div class="p"><!----></div> Date: Friday 2013.4.12 <div class="p"><!----></div> Speaker: <b>Prof. Jan Perina Jr</b> <div class="p"><!----></div> Coauthors: O. Haderka, M. Hamar, and V. Michalek <div class="p"><!----></div> Affiliation: RCPTM, Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Science of the Czech Republic, Faculty of Science, Palack&#253; University, 17. listopadu 12, 77146 Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Measurement of photon-number distributions of twin beams and their applications. Generation of sub-Poissonian light.</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Determination of photon-number statistics [1,2] of twin beams based on the measurement of photocount statistics by an iCCD camera is discussed. The approach based on the superposition of signal and noise [3] applied to paired fields is analyzed in detail and compared with that based on the method of maximum likelihood. Advantages of the use of an iCCD camera as well as limitations are mentioned [4]. A method for the determination of absolute quantum detection efficiency based on the measurement of photocount statistics of twin beams is suggested [5]. The measured histograms of joint signal-idler photocount statistics allow to eliminate an additional noise superimposed on an ideal calibration field composed of only photon pairs. This makes the method superior above others presently used [6]. Values of the inquired quantum detection efficiencies in the signal- and idler-field paths are derived from the first- and second-order experimental photocount moments combined with the method of least-square declinations from the experimental histogram. Post-selection from twin beams is used to generate conditional sub-Poissonian light with Fano factors up to 0.62 using the iCCD camera. Possibilities as well as limitations of this approach are analyzed. <div class="p"><!----></div> <b>References:</b><br /> [1] O. Haderka, J. Perina Jr., M. Hamar, and J. Perina, Phys. Rev. A 71, 033815 (2005).<br /> [2] J. Perina Jr., O. Haderka, V. Michalek, and M. Hamar, Phys. Rev. A 87, 022108 (2013).<br /> [3] J. Perina and J. Krepelka, J. Opt. B: Quant. Semiclass. Opt. 7, 246 (2005).<br /> [4] J. Perina Jr., O. Haderka, M. Hamar, and V. Michalek, Phys. Rev. A 85, 023816 (2012).<br /> [5] J. Perina Jr., O. Haderka, M. Hamar, and V. Michalek, Opt. Lett. 37, 2475 (2012).<br /> [6] G. Brida, I. P. Degiovanni, M. Genovese, M. L. Rastello, and I. R. Berchera, Opt. Express 18, 20572 (2010).</blockquote> <div class="p"><!----></div> </li> <li> /128/ <div class="p"><!----></div> Date: Wednesday, 2013.4.10 <div class="p"><!----></div> Speaker: B.Sc. <b>Adam Zcibior</b> <div class="p"><!----></div> Affiliation: University of Cambridge, UK. <div class="p"><!----></div> Title: <font color="#0000FF">The physics of information processing</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This talk will feature some classical results in the physical theory of information processing. First we'll take a look at a model of computation based on irreversible laws of macroscopic physics. We'll investigate its relationship with entropy and obtain the famous Landauer's principle. We'll further see how this principle limits the power of our computers and how it deals with the Maxwell demon. Later we'll consider why and how to build a model of computation based on reversible laws of microscopic physics.</blockquote> <div class="p"><!----></div> </li> <li> /127/ <div class="p"><!----></div> Date: Wednesday 2013.03.20 <div class="p"><!----></div> Speaker: Dr <b>Dheeraj Kumar</b> <div class="p"><!----></div> Affiliation: Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Sector-III, Block - JD, Salt Lake, Kolkata - 700098 <div class="p"><!----></div> Title: <font color="#0000FF">Numerical Calculations Involving Spin-Wave Dynamics in One- and Two-Dimensional Magnonic Crystals</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Numerical methods, which analyse the output of micro-magnetic simulations can be employed to extract desirable information. The presentation will discuss what information is usually required from theoretical and experimental aspects and how one can go about obtaining them. Apart from visualizing the evolution of magnetization with time in these mediums, methods to plot spin-wave power in frequency and wavevector domain shall also be discussed.</blockquote> <div class="p"><!----></div> </li> <li> /126/ <div class="p"><!----></div> Date: Wednesday 2013.03.13 <div class="p"><!----></div> Speaker: <b>Prof. Piotr Tomczak</b> <div class="p"><!----></div> Affiliation: Quantum Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Quantum dimer model on SierpiDski gasket lattice</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The properties of quantum dimer model are investigated on 42-site SierpiDski lattice. This is a self-similar lattice with, to some extend, the corner-sharing triangles. It is interesting that the entropy of dimer coverings of SierpiDski lattice is the same as that for the kagom lattice (1/3 ln 2). We demonstrate that the quantum dimer model has short-range dimer-dimer correlations and gapped dimer-liquid phase with topological degeneracy. A full spectrum of a dimer liquid is obtained.</blockquote> <div class="p"><!----></div> </li> <li> /125/ <div class="p"><!----></div> Date: Friday, 2013.3.8, 10:00 <div class="p"><!----></div> Speaker: <b>Prof. Sergey A. Nikitov</b> <div class="p"><!----></div> Affiliation: Vice-director of Kotel nikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Moscow, Russia; Corresponding Member of RAS <div class="p"><!----></div> Title: <font color="#0000FF">Institute of Radioengineering and Electronics of RAS. New trends in analogue electronics.</font> <div class="p"><!----></div> </li> <li> /124/ <div class="p"><!----></div> Date: Friday, 2013.3.1 <div class="p"><!----></div> Speaker: Dr <b>Krzysztof Lebecki</b> <div class="p"><!----></div> Affiliation: Fachbereich Physik, Universitat Konstanz, Konstanz, Germany; <a href="http://theorie.physik.uni-konstanz.de/lebecki">home page</a>&nbsp; <div class="p"><!----></div> Title: <font color="#0000FF">Temperature effects in magnetism in the nanoscale</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Usually, magnetic behavior in the nanoscale is described by the Landau-Schlitz-Gilbert equation. This enables us, for instance, to model and understand time-related issues, like: precession, or magnetization switching. In my talk I will shortly describe this equation and its importance. Then, I will speak about temperature, its influence, and how it can be included into the model. I will describe the problem from two perspectives. There exists namely an atomistic approach, where every single spin is modeled. For larger systems we use continuum theory-micromagnetism. This will lead me to the recently proposed Landau-Schlitz-Bloch equation. The talk will be supported with results of numerical simulations.</blockquote> <div class="p"><!----></div> </li> <li> /123/ <div class="p"><!----></div> Date: Wednesday 2013.2.6 <div class="p"><!----></div> Speaker: Dr <b>Magdalena StobiDska</b> <div class="p"><!----></div> Affiliation: Institute of Theoretical Physics, Polish Academy of Sciences and Institute of Theoretical Physics and Astrophysics, University of Gdansk <div class="p"><!----></div> Title: <font color="#0000FF">Entanglement Witnesses and Measures for Bright Squeezed Vacuum</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum entanglement is a fascinating phenomenon, especially if it is observed at the macroscopic scale. Importantly, macroscopic quantum correlations can be revealed only by accurate measurement outcomes and strategies. Here, we formulate feasible entanglement witnesses for bright squeezed vacuum in the form of the macroscopically populated polarization triplet Bell states. Their testing involves efficient photodetection and the measurement of the Stokes operators variances. We also calculate the measures of entanglement for these states such as the Schmidt number and the logarithmic negativity. Our results show that the bright squeezed vacuum degree of polarization entanglement scales as the mean photon number squared. We analyze the applicability of an operational analog of the Schmidt number. <div class="p"><!----></div> <b>Reference:</b> Phys. Rev. A 86, 022323 (2012)</blockquote> <div class="p"><!----></div> </li> <li> /122/ <div class="p"><!----></div> Date: Wednesday 2013.1.23 <div class="p"><!----></div> Speaker: <b>Prof. Anirban Pathak</b> <div class="p"><!----></div> Affiliation: Department of Physics, Jaypee Institute of Information Technology (Deemed University), Noida, India.<br /> Temporarily at RCPTM, Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Science of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic. <div class="p"><!----></div> Title: <font color="#0000FF">Secure quantum communication using arbitrary orthogonal multi-particle quantum states</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> It is shown that maximally efficient protocols for secure direct quantum communications can be constructed using any arbitrary orthogonal basis. This establishes that no set of quantum states (e.g. GHZ states, W states, Brown states or Cluster states) has an advantage over the others, barring the relative difficulty in physical implementation. This provides a wide choice of states for experimental realization of direct secure quantum communication protocols. We have also shown that this protocol can be generalized to a completely orthogonal state based protocol of Goldenberg-Vaidman (GV) type. The security of these protocols essentially arises from duality and monogamy of entanglement. This stands in contrast to protocols that employ non-orthogonal states, like Bennett-Brassard 1984 (BB84), where the security essentially comes from non-commutativity in the observable algebra. This observation is exploited to classify the quantum communication protocols into two broad (but not exclusive) classes: A) protocols based on conjugate coding, which require the non-commutative structure of the physical theory; and B) superposition-based protocols, where security arises from non-realism and linearity. </blockquote> <div class="p"><!----></div> </li> <li> /121/ <div class="p"><!----></div> Date: Wednesday 2013.1.16 <div class="p"><!----></div> Speaker: B.Sc. <b>Karol Nowacki</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Cryptography in classical antiquity</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The ancient Greeks and Romans used several methods of hiding secret messages written in plaintext, but seldom had recourse to cryptography in the proper sense. Two examples of its application - Caesar's substitution cipher and a Spartan transposition ciphering device - are discussed based on accounts by Aulus Gellius and other authors.</blockquote> <div class="p"><!----></div> </li> <li> /120/ <div class="p"><!----></div> Data: Zroda 2013.1.9 <div class="p"><!----></div> Prelegent: <b>Prof. Grzegorz Wrochna</b> <div class="p"><!----></div> Afiliacja: Dyrektor Narodowego Centrum BadaD Jdrowych w Zwierku <div class="p"><!----></div> TytuB: <font color="#0000FF">Energetyka jdrowa - nie chcemy, ale musimy?</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Energetyka jdrowa (EJ) budzi wiele kontrowersji, a powszechna wiedza na jej temat zdominowana jest przez mity i nieporozumienia. Seminarium bdzie prb odpowiedzi na pytania: EJ na [wiecie po Fukushimie: regres czy renesans? Dlaczego Niemcy rezygnuj z EJ? Czy EJ jest potrzebna Polsce? Program Polskiej EJ: jakim cudem jest realizowany, skoro nie jest zatwierdzony?</blockquote> <div class="p"><!----></div> </li> <li> /119/ <div class="p"><!----></div> Data: Zroda 2012.12.19 <div class="p"><!----></div> Prelegent: <b>Prof. Marek Wolf</b> <div class="p"><!----></div> Afiliacja: Uniwersytet KardynaBa Stefana WyszyDskiego <div class="p"><!----></div> TytuB: <font color="#0000FF">Hipoteza Riemanna oczami fizyka</font> <div class="p"><!----></div> <blockquote><b>Streszczenie:</b> Hipoteza Riemanna (RH) mwi o poBo|eniu na pBaszczyznie zespolonej nietrywialnych zer funkcji dzeta dzeta(s) Riemanna. Jest ona jednym z najbardziej znanych nierozwizanych problemw w matematyce. Po sformuBowaniu hipotezy Riemanna kilka minut po[wic anatomii dzety Riemanna. Zasadnicza cz[ wykBadu bdzie po[wicona omwieniu zwizkw RH z fizyk: Twierdzenie Woronina i fraktalno[ dzety(s). Elektromechaniczny ukBad van der Pola. Przypuszczenie Polya'i-Hilberta, korelacje zer dzety: praca Montgomerego, macierze losowe, hamiltonian Okubo, Berry: H=xp. Zwizki z chaosem kwantowym. Modele Isinga i RH. Bilardy i RH. Ruchy losowe i RH.</blockquote> <div class="p"><!----></div> </li> <li> /118/ <div class="p"><!----></div> Date: Wednesday 2012.12.12 <div class="p"><!----></div> Speaker: <b>Prof. Kostyantyn Gusliyenko</b> <div class="p"><!----></div> Affiliation: Ikerbasque Research Professor, Departamento de Fsica de Materiales, Universidad del Pas Vasco, UPV/EHU, San Sebastian, SPAIN. <div class="p"><!----></div> Title: <font color="#0000FF">Review of spin dynamics in the vortex state magnetic dots and nanopillars</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Fundamental understanding of spin dynamics and reversal in a system with a reduced dimensionality is essential in the future advancements of nanomagnetism and spintronics. Thus, it becomes important to explore the spin excitations in sub-micron magnetic particles such as dots. For mesoscopic and nanoscale sizes of dots, non-uniform magnetization distributions with zero remanence ("vortex" states) are often observed at equilibrium [1]. The magnetic vortex with the in-plane curling magnetization and the out-of-plane magnetization at the core is the simplest topologically non-trivial ground state in ferromagnetic dots. The vortex states are stable within a wide range of dot sizes from a few tens of nm up to a few tens of microns. Vortex related phenomena offer insight into spin dynamics on a fundamental level, and also govern magnetization reversal. In this talk, I will present a review of calculations and measurements of the spin excitations in the vortex ground state of soft magnetic dots. The spectrum of spin excitations consists of a low-frequency gyrotropic (sub-GHz range) mode describing precessional motion of the vortex core and high-frequency modes describing spin excitations of the vortex planar part. Nontrivial spin dynamic properties, such as magnetic vortex core (VC) polarization reversal driven by small-amplitude, oscillating (pulse) magnetic fields or spin polarized currents, were observed [2]. Special interest in the vortex dynamics is inspired by the possibility of easy and controllable dynamical switching of the VC magnetization direction (polarization). The dynamical origin of the VC polarization reversal will be considered. We derived a phase diagram of the VC reversal and its switching time with respect to both the driving field strength and frequency. The interaction of high frequency azimuthal spin waves with the moving VC [3] and their influence on the VC motion will be discussed. There is a giant frequency splitting of the spin waves having non-zero overlapping with the vortex mode as well as a finite vortex mass of dynamical origin. We calculated also the main dynamic parameters of the spin polarized current induced magnetic vortex oscillations in nanopillars, such as the range of current density, where the vortex steady oscillation state exists, the oscillation frequency and VC orbit radius [4]. <div class="p"><!----></div> <b>References:</b><br /> [1] K.Y. Guslienko, J. Nanosci. Nanotechn. 8, 2745 (2008). <br /> [2] B. Van Waeyenberge et al., Nature 444, 461 (2006); K. Yamada et al., Nature Materials 6, 269 (2007).<br /> [3] K.Y. Guslienko et al., Phys. Rev. Lett. 101, 247203 (2008); Phys. Rev. B 81, 014414 (2010).<br /> [4] K.Y. Guslienko et al., J. Phys.: Conf. Ser. 292, 012006 (2011).</blockquote> <div class="p"><!----></div> </li> <li> /117/ <div class="p"><!----></div> Date: Wednesday 2012.11.28 <div class="p"><!----></div> Speaker: <b>M.Sc. T. Kendziorczyk</b> <div class="p"><!----></div> Coauthor: T. Kuhn <div class="p"><!----></div> Affiliation: Institut f&#252;r Festk&#246;rpertheorie, Universit&#228;t M&#252;nster, 48149 M&#252;nster, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Micromagnetic simulation of spin torque nano-oscillators</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> It has been predicted theoretically and observed experimentally that a direct current traversing a magnetic multilayer exerts a spin torque on the magnetic system which can compensate the natural damping and lead to self-sustaining magnetic oscillations in the GHz range. Due to the easy frequency tunability of the spin torque nano-oscillators (STNOs) this effect has great potential for the construction of nanosized microwave gen- erators. The main problem which has to be solved for future applications is the low output power of a single STNO. Some experiments have already been performed which show that it is possible to synchronize two STNOs. The output power for N synchronized STNOs could in principle scale with N<sup>2</sup>. However, in order to construct larger arrays of STNOs a good knowledge about the interaction mechanism between them is indispensable, which can be obtained by means of micromagnetic simulations. This talk will give a general overview of the magnetization dynamics of an extended thin magnetic film excited by a direct current through a point contact. The oscillation below the point contact can excite propagating spin waves which provide an important mechanism for the interaction between STNOs. We will present micromagnetic simulation results concerning the synchronization of two STNOs which show that there can exist several different synchronized states, whose dynamics are determined by the characteristics of the involved spin waves.</blockquote> <div class="p"><!----></div> </li> <li> /116/ <div class="p"><!----></div> Date: Wednesday 2012.11.28 <div class="p"><!----></div> Speaker: <b>M.Sc. J. H&#252;ser</b> <div class="p"><!----></div> Coauthors: T. Kendziorczyk and T. Kuhn <div class="p"><!----></div> Affiliation: Institut f&#252;r Festk&#246;rpertheorie, Universit&#228;t M&#252;nster, 48149 M&#252;nster, Germany <div class="p"><!----></div> Title: <font color="#0000FF">Effects of the lattice discreteness on the spin wave dispersion in ferromagnetic thin films</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Spin wave dispersion relations in ferromagnetic thin films are often calculated within a continuum model based on the Landau-Lifshitz equation thereby neglecting the underlying lattice structure in real materials. In this talk we present and analyze some differences between the spin wave modes obtained in a lattice model and the well known results of the continuum model. For this purpose we calculate the spin wave dispersion with a discrete model consisting of classical spins which are stacked on a cubic lattice and interact via exchange and dipolar forces. In the case of magnetostatic modes, the discrete model yields new qualitative features in comparison with the results of Damon and Eshbach. We observe several surface modes and the degeneracy of the spin waves which propagate perpendicularly to the applied magnetic field is lifted. We also show that the dipolar-exchange modes are strongly influenced by the boundary conditions in ultra-thin films and undergo a frequency upshift. Finally, we compare the 2d-limit of the continuum model with the case of a single layer in the discrete model.</blockquote> <div class="p"><!----></div> </li> <li> /115/ <div class="p"><!----></div> Date: Wednesday 2012.11.7 <div class="p"><!----></div> Speaker: <b>Prof. Henryk Drozdowski</b> <div class="p"><!----></div> Affiliation: Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">New outlook on molecular liquids by X-ray diffraction</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Knowledge of the structure, molecular correlations and mechanisms of structural processes taking place in liquids are of fundamental importance for understanding of their physical and chemical properties. X-Ray diffraction studies of liquids open a possibility of finding relations between their structures and properties. Liquids have been divided into certain classes (homologue series) according to certain properties. The lecture is concerned with presentation of application of X-Ray diffraction method to investigation of intra- and intermolecular interactions and close-range structure in selected complex liquids. X-ray structural study brings information on the types of molecular associations contributing to determination of the liquid nature and mechanisms of processes taking place in it. The close-range ordering is related to the mode of packing of molecules in the liquid. According to molecules in liquid have at their disposal 35% of free space. Structure of liquid can be described by the radial distribution function (RDF). This function permits determination of such parameters as the sphere radii, coordination numbers and degree of ordering. The close-ordering range determined in the liquids studied by the WAXS method is about 2 nm.</blockquote> <div class="p"><!----></div> </li> <li> /114/ <div class="p"><!----></div> Date: Wednesday 2012.10.31 <div class="p"><!----></div> Speaker: Dr hab. <b>Genowefa Zlsarek</b> <div class="p"><!----></div> Affiliation: Molecular Biophysics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">WspBczesna rewolucja naukowa na pograniczu fizyki i biologii</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Koniec XX wieku przynisB wielkie zmiany w paradygmatach fizyki molekularnej i biologii. DoszBo do powstania nowych dziedzin nauki - nanotechnologii i biologii systemowej. S to zupeBnie rozdzielne dziedziny badaD. W konsekwencji trudno jest obecnie jednoznacznie okre[li interdyscyplinarny kierunek badaD, jakim byBa biofizyka.</blockquote> <div class="p"><!----></div> </li> <li> /113/ <div class="p"><!----></div> Date: Wednesday 2012.10.24 <div class="p"><!----></div> Speaker: Dr <b>Marcin ZiBek</b> <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Fotoogniwa barwnikowe badane metodami spektroskopii laserowej</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Fotoogniwa barwnikowe (DSSC: Dye-Sensitized Solar Cells), nale| do nowej, obiecujcej generacji ogniw sBonecznych, w ktrych podstaw funkcjonowania jest oddziaBywanie barwnikw organicznych z warstwami nanoczstek tlenkw metali (najcz[ciej tlenku tytanu). Fotogniwa barwnikowe zostaBy po raz pierwszy zaproponowane stosunkowo niedawno, w pionierskiej pracy w Nature w 1991 r. Ich obecna sprawno[ mo|e przekracza 12%, a znacznie mniejsze koszty produkcji oraz lepsza wydajno[ w warunkach umiarkowanego i sBabego o[wietlenia (wewntrz pomieszczeD i w strefie klimatycznej, w ktrej le|y nasz kraj) powoduj, |e staBy si one potencjaln alternatyw dla dotychczasowej generacji fotoogniw krzemowych. O wysokim i realnym znaczeniu fotoogniw barwnikowych [wiadczy lawinowo wzrastajca liczba publikacji i patentw na ich temat oraz wiele presti|owych nagrd naukowych przyznanych w ostatnich latach ich gBwnemu twrcy, Michealowi Grtzelowi. Separacja Badunku w fotoogniwach barwnikowych decyduje o oglnej sprawno[ci ogniwa i odbywa si w kilku procesach (wstrzykiwanie elektronu z barwnika do nanoczstki, regeneracja barwnika, transport Badunku przez nanoczstki), ktrych skala czasowa rozciga si od dziesitek femtosekund do setek milisekund. Poznanie czstkowych wydajno[ci poszczeglnych procesw jest mo|liwe za pomoc technik czasowo-rozdzielczej absorpcyjnej i emisyjnej spektroskopii laserowej w [wietle widzialnym i podczerwieni. Podczas seminarium omwione zostan najnowsze modele opisujce wspomniane procesy i zaprezentowane bd wyniki badaD fotoogniw barwnikowych metodami spektroskopii laserowej, w ktrych w ostatnich kilku miesicach autor braB udziaB. Znaczna cz[ badaD zostaBa przeprowadzona na Wydziale Fizyki UAM.</blockquote> <div class="p"><!----></div> </li> <li> /112/ <div class="p"><!----></div> Date: Thursday 2012.10.18 <div class="p"><!----></div> Speaker: Dr <b>Antonn ernoch</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Single photon detection in Olomouc</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk presents several devices capable of detection of ultra-weak light signals. The main technological aspects and limitations of these devices are discussed with emphasis on possible usage in quantum optical experiments.</blockquote> <div class="p"><!----></div> </li> <li> /111/ <div class="p"><!----></div> Date: Thursday 2012.10.18 <div class="p"><!----></div> Speaker: Dr <b>Karel Lemr</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Optimal linear-optical tunable controlled phase gate and related research</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Controlled phase gate is one of the fundamental building blocks of quantum information devices. This talk presents our experimental implementation of such device and related research.</blockquote> <div class="p"><!----></div> </li> <li> /110/ <div class="p"><!----></div> Date: Thursday 2012.10.18 <div class="p"><!----></div> Speaker: <b>Prof. Konrad Banaszek</b> <div class="p"><!----></div> Affiliation: Institute of Theoretical Physics, Department of Quantum Optics and Atomic Physics, Faculty of Physics, University of Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Entanglement-based effects in two-photon propagation</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Radiation generated in spontaneous parametric down-conversion exhibits a number of interesting features. One of them is the phenomenon of non-local dispersion cancellation, in which strong temporal correlations between photon pairs are preserved despite propagation through dispersive media with group velocity dispersion coefficients of equal strength and opposite signs. An intriguing question is whether such features can be reproduced with classical radiation. In the case of non-local dispersion cancellation, an analogous effect can be shown to occur also for Gaussian mixtures of coherent states, but at the cost of introducing a uniform background of coincidence counts with a comparable magnitude. We present here a simple variance-based criterion identifying a feature of non-local dispersion cancellation that critically depends on the presence of entanglement in the propagating light. Analogous analysis can be applied also to directional correlations in free-space propagation.</blockquote> <div class="p"><!----></div> </li> <li> /109/ <div class="p"><!----></div> Date: Thursday 2012.10.18 <div class="p"><!----></div> Speaker: Dr <b>Karol Bartkiewicz</b> <div class="p"><!----></div> Affiliation: Joint Laboratory of Optics of Palack&#253; University and Institute of Physics of Academy of Sciences of the Czech Republic, Faculty of Science, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Experimental quantum cloning for hacking quantum-key distribution protocols</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We describe a proof-of-principle experiment which shows that quantum cloning can be used for hacking quantum key distribution protocols. We analyze the conditions under which the cloning attack is successful and obtain the corresponding error rates.</blockquote> <div class="p"><!----></div> </li> <li> /108/ <div class="p"><!----></div> Date: Thursday 2012.10.18 <div class="p"><!----></div> Speaker: Dr <b>Monika Bartkowiak</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Amplification of Kerr nonlinearity and its application for deterministic entangling gates at the single-photon level</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> An alternative approach to implement quantum entangling gates to the well-known linear-optical one is using nonlinear materials for deterministic nonlinear photon interactions. However only small conditional phase shift induced by a few photons in the Kerr nonlinearity was successfully measured. We show how to improve the phase-shift obtained for two single-photon states in the cross-Kerr interaction.</blockquote> <div class="p"><!----></div> </li> <li> /107/ <div class="p"><!----></div> Date: Thursday 2012.10.18 <div class="p"><!----></div> Speaker: Dr <b>Anna Kowalewska-KudBaszyk</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Kerr couplers as nonlinear quantum scissors - entanglement creation and decay</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Various types of decay for entanglement obtained within nonlinear quantum scissors systems are discussed. Conditions for observing entanglement death or its revival are presented.</blockquote> <div class="p"><!----></div> </li> <li> /106/ <div class="p"><!----></div> Date: Thursday 2012.10.18 <div class="p"><!----></div> Speaker: <b>Prof. WiesBaw LeoDski</b> <div class="p"><!----></div> Affiliation: Quantum Optics and Engineering Division, Institute of Physics, University of Zielona Gra <div class="p"><!----></div> Title: <font color="#0000FF">Quantum states engineering - nonlinear quantum scissors</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Several models involving nonlinear quantum Kerr-like oscillators are presented. Such models referred to as <em>nonlinear quantum scissors</em> can lead to finite-dimensional states generation, including maximally entangled ones.</blockquote> <div class="p"><!----></div> </li> <li> /105/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: Dr <b>MichaB Berent</b> <div class="p"><!----></div> Coauthors: Andon A. Rangelov and Nikolay V. Vitanov <div class="p"><!----></div> Affiliation: Quantum Electronics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Broadband Faraday isolator</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Drawing on an analogy with the powerful technique of composite pulses in quantum optics and polarization optics we present a broadband optical diode (optical isolator) made of a sequence of ordinary 45 Faraday rotators sandwiched with quarter-wave plates rotated at the specific angles with respect to their fast polarization axes.</blockquote> <div class="p"><!----></div> </li> <li> /104/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: Dr <b>Piotr Trocha</b> <div class="p"><!----></div> Affiliation: Mesoscopic Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Spin and charge thermoelectric effects in a double quantum dot system</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Thermoelectric effects in a double quantum dot system coupled to external magnetic/nonmagneticleads are investigated theoretically. The basic thermoelectric transport characteristics, like thermopower, electronic contribution to heat conductance, and the corresponding figure of merit, have been calculated in terms of the linear response theory and Green function formalism in the Hartree-Fock approximation for Coulomb interactions. An enhancement of the thermal efficiency (figure of merit ZT) due to Coulomb blockade has been found. The magnitude of ZT is further considerably enhanced by quantum interference effects. The influence of spin-dependent transport on the thermoelectric effects (especially on Seebeck and spin Seebeck effects) is also analyzed.</blockquote> <div class="p"><!----></div> </li> <li> /103/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Piotr Tomczak</b> <div class="p"><!----></div> Affiliation: Quantum Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Entanglement in Quantum Spin Systems: RVB Approach</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Recently proposed estimators for entanglement entropy in quantum spin systems in resonating valence bond (RVB) basis are reviewed. Some of them may be effectively calculated by using Monte Carlo techniques. Additionally properties of entanglement spectrum of small systems are presented in position and momentum space and their relation to topologically ordered states is discussed. An attempt to calculate such a spectrum of small spin systems in RVB basis is reported. A possibility of finding the topological order in quantum spin systems using RVB basis is discussed.</blockquote> <div class="p"><!----></div> </li> <li> /102/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: B.Sc. <b>Marcin Karczewski</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">An algorithm for characterizing SLOCC classes of multiparticle entanglement</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> A primer on how geometric invariant theory and momentum map geometry could be used to effectively find all stochastic local operations and classical communication (SLOCC) classes of pure states.</blockquote> <div class="p"><!----></div> </li> <li> /101/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: <b>M.Sc. Jan Tuziemski</b> <div class="p"><!----></div> Affiliation: Faculty of Applied Physics and Mathematics, Technical University of GdaDsk <div class="p"><!----></div> Title: <font color="#0000FF">Novel property of private states and its application</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Quantum bipartite states with the direct accessible, ideal cryptographic key are known as private states. In this talk we will present a novel property, namely the invariance of distillable key under rotations around private axis in Devetak-Winter protocol, for general private states. Its application to the problem of searching optimal measurement basis for a given private state will be demonstrated. We will also provide results concerning error estimation of the proposed procedure.</blockquote> <div class="p"><!----></div> </li> <li> /100/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: <b>M.Sc. Joanna Pietraszewicz</b> <div class="p"><!----></div> Affiliation: Institute of Physics, Polish Academy of Sciences (PAN), Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Anharmonicity vs. higher orbital states in the optical lattices</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> It is known that dipolar interactions in the presence of a resonant magnetic field can transfer atoms to higher excited states with non zero angular momentum (Einstein-de Haase effect). We investigate how this effect is modified by the lattice potential. In particular we explain in details the role of anharmonicity and anisotropy of a single lattice site.</blockquote> <div class="p"><!----></div> </li> <li> /99/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: Dr <b>Grzegorz Chimczak</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Improving fidelity in atomic-state teleportation via non-maximally-entangled states</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk shows that non-maximally entangled states can be better for atomic state teleportation performed via cavity decay. The destructive influence of cavity decay on the fidelity can be minimized by using in the teleportation the non-maximally entangled states instead of the maximally entangled state.</blockquote> <div class="p"><!----></div> </li> <li> /98/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: B.Sc. <b>Karol Nowacki</b> <div class="p"><!----></div> Affiliation: Nonlinear Optics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Statistical testing of random number generators</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Review of statistical randomness tests and their software implementations used to verify quality of random number generators.</blockquote> <div class="p"><!----></div> </li> <li> /97/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: Dr <b>Marek Sawerwain</b> <div class="p"><!----></div> Affiliation: Institute of Physics, University of Zielona Gra <div class="p"><!----></div> Title: <font color="#0000FF">Perfect state transfers in finite Hilbert space (for qubits and qudits)</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk presents the perfect state transfer (PST) protocols performed in 1D qubit or qudit chains. Dynamics of transfer is determined by the XY-like Hamiltonian which will be described by special unitary group operators SU(d).</blockquote> <div class="p"><!----></div> </li> <li> /96/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: <b>Prof. Andrea Lehmann-Szweykowska</b> <div class="p"><!----></div> Coauthors: Ryszard Wojciechowski, MichaB KurzyDski <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Correlated cluster mean field theory in the hcp compressible Ising model</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We derive an hcp compressible Ising Hamiltonian with a spin-phonon interaction and compute the influence of spin correlations on the empirically observed Brillouin shift. The spin correlations are found by an Oguchi-like method which is newly tailored variation of the Bethe-Peierls-Weiss (BPW) approximation. In the direct space, we consider a cluster consisting of a central spin and its 12 nearest neighbours. Each of the 12 nn pairs, consisting of the central spin and, in turn, all the neighbours , is treated exactly (Oguchi method) while the influence of the remaining spins is replaced by an effective field. In the present approach, the latter is not calculated self-consistently, but substituted by that found in the conventional MFA. In the reciprocal lattice, after the Fourier transformation, we finally arrive at the spin correlation which is temperature and wave-vector dependant. The result remains valid both in the ordered and disordered phases. In the ordered phase, the molecular-field approximation is extended to the static soliton theory.</blockquote> <div class="p"><!----></div> </li> <li> /95/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: Dr hab. <b>Jan Soubusta</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Spatial and spectral properties of the pulsed second-harmonic generation in a PP-KTP waveguide</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Spatial and spectral properties of the pulsed second harmonic generation in a periodically-poled KTP waveguide are analyzed. Experimental results are interpreted using a model based on finite elements method.</blockquote> <div class="p"><!----></div> </li> <li> /94/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: Dr hab. <b>Krzysztof Gibasiewicz</b> <div class="p"><!----></div> Affiliation: Molecular Biophysics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Influence of protein dynamics on intraprotein electron transfer in photosynthetic reaction centers</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Photosynthetic reaction centers are pigment-protein complexes containing a chain of electron transfer carriers. A linear electron transfer between these carriers occurs on a wide time-scale spanning from picoseconds to microseconds depending on particular step of the transfer. In the talk, results of experimental studies of one particular step of this electron transfer will be shown. Multiphasic kinetics of this reaction is interpreted in terms of a model in which protein dynamically modulates the rate of the electron transfer with characteristic lifetimes of &#160;&#8764;&#160;1 and &#160;&#8764;&#160;10 ns.</blockquote> <div class="p"><!----></div> </li> <li> /93/ <div class="p"><!----></div> Date: Wednesday 2012.10.17 <div class="p"><!----></div> Speaker: Dr <b>Barbora Lemrov</b> <div class="p"><!----></div> Affiliation: Department of Organic Chemistry, Palack&#253; University, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Solid phase synthesis of potentially biologically active compounds</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The talk presents the technique of the so-called solid phase synthesis of organic molecules. Its application on synthesis of compounds with potential biological activity is discussed with emphasis on current research at the Department of Organic Chemistry of Palack University in Olomouc.</blockquote> <div class="p"><!----></div> </li> <li> /92/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: Dr <b>Jan Milewski</b> <div class="p"><!----></div> Affiliation: Institute of Mathematics, PoznaD University of Technology, PoznaD <div class="p"><!----></div> Title: <font color="#0000FF">Anyonic harmonics and their Hodge structure deformation</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> The space of anyonic harmonic function on a plane admits a deformed Hodge structure. The deformation of the Hodge structure is connected with the fractional statistics. The parameters of the structure are quantum numbers of the system.</blockquote> <div class="p"><!----></div> </li> <li> /91/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: Dr <b>Tomasz Polak</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Dirac like physics in optical lattices</font> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> <blockquote><b>Abstract:</b> This talk presents an elegant concept of the effective mass theory applied to the neutral bosons confined in two-dimensional square lattice under synthetic magnetic field. Analytically calculated band structure allows to predict the existence of the massless particles with neutrino like dispersion relation located in the particular points of the momentum space. It will be shown that the Dirac cones contain massless particles whose positions and velocities can be tuned by the external magnetic field giving rise to the exotic properties. The presence of the Hofstadter spectrum in the strongly interacting system of bosons reveals some unexpected behavior of the local effective mass dependence.</blockquote> <div class="p"><!----></div> </li> <li> /90/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: Dr <b>PrzemysBaw Grzybowski</b> <div class="p"><!----></div> Affiliation: Solid State Theory Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Hubbard-I approach to the Mott transition</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We analyse the Hubbard model with correlated hopping, at the double occupancy conservation symmetry point, using Hubbard-I approach which describes fractionalised electrons quasiparticles. We obtain description of Mott transitions and the surrounding extremely correlated quantum liquids. The calculations may be relevant for future experiments on optical lattices.</blockquote> <div class="p"><!----></div> </li> <li> /89/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: Dr <b>Tomasz SowiDski</b> <div class="p"><!----></div> Affiliation: Institute of Physics, Polish Academy of Sciences (PAN), Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Dipolar molecules in optical lattices</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> We study the extended Bose-Hubbard model describing an ultracold gas of dipolar molecules in an optical lattice, taking into account all on-site and nearest-neighbor interactions, including occupation-dependent tunneling and pair tunneling terms. We show that these terms can destroy insulating phases and lead to novel quantum phases.</blockquote> <div class="p"><!----></div> </li> <li> /88/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: Dr <b>Antonn ernoch</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Experimental implementations of quantum cloners</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Review of several experimental implementations of qubit cloners implemented in the Joint Laboratory of Optics in Olomouc is presented. Quality of various implementations is discussed based on obtained clones fidelity.</blockquote> <div class="p"><!----></div> </li> <li> /87/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: Dr hab. <b>Jan Soubusta</b> <div class="p"><!----></div> Affiliation: Institute of Physics of Academy of Science of the Czech Republic, Joint Laboratory of Optics of PU and IP AS CR, Olomouc, Czech Republic <div class="p"><!----></div> Title: <font color="#0000FF">Experimental implementations of linear-optical quantum devices</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> This review talk presents several linear-optical quantum devices suitable for discrete variables quantum information processing. The devices make use of single and bi-photon interference in both bulk and fibre optical setups.</blockquote> <div class="p"><!----></div> </li> <li> /86/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: Dr <b>Piotr Deuar</b> <div class="p"><!----></div> Affiliation: Institute of Physics, Polish Academy of Sciences (PAN), Warsaw <div class="p"><!----></div> Title: <font color="#0000FF">Nonclassical atom pairs obtained from supersonic collisions of Bose-Einstein condensates</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Correlated atom pairs are scattered from colliding Bose-Einstein condensates by a process akin to parametric down conversion. I will describe an experiment and its numerical simulation that have shown number-difference squeezing and a violation of the Cauchy-Schwartz inequality. The long term goal is to test Bell inequalities with spatially separated massive particles.</blockquote> <div class="p"><!----></div> </li> <li> /85/ <div class="p"><!----></div> Date: Tuesday 2012.10.16 <div class="p"><!----></div> Speaker: <b>Prof. Tadeusz Lulek</b> <div class="p"><!----></div> Affiliation: Mathematical Physics Division, Physics Faculty, AMU <div class="p"><!----></div> Title: <font color="#0000FF">Galois qubits and Bethe Ansatz</font> <div class="p"><!----></div> <blockquote><b>Abstract:</b> Implementation of an ari