<?xml version="1.0" encoding="UTF-8" ?><rss version="2.0"><channel><title>Talks &amp; Seminars at IQOQI</title><link>http://iqoqi.at/rss/events</link><description>IQOQI RSS</description><lastBuildDate>Sun, 05 Feb 2012 04:00:52 +0100</lastBuildDate><generator>APM RSS GEN</generator><managingEditor>christian.flatz@uibk.ac.at (Christian Flatz)</managingEditor><webMaster>valentin.staubmann@oeaw.ac.at (Valentin Staubmann)</webMaster><item><title><![CDATA[One-Dimensional Quantum Liquids: Beyond the Luttinger Liquid Paradigm]]></title><link><![CDATA[http://iqoqi.at/events]]></link><description><![CDATA[For many years, the Luttinger liquid theory has served as a useful paradigm for the description of one-dimensional (1D) quantum fluids in the limit of low energies. This theory is based on a linearization of the dispersion relation of the particles constituting the fluid. I will review the recent progress in understanding 1D quantum fluids beyond the low-energy limit, where the nonlinearity of the dispersion relation becomes essential. 

References:
[1]Universal theory of nonlinear Luttinger liquids, A. Imambekov and  L. Glazman, Science 323, 228 (2009) 
[2]One-Dimensional Quantum Liquids: Beyond the Luttinger Liquid Paradigm , A. Imambekov, T. Schmidt and  L. Glazman,  arXiv:1110.1374 (submitted to Rev. Mod. Phys.).<br />Start Date: Fri, 10 Feb 2012 16:30:00 +0100]]></description><pubDate>Fri, 10 Feb 2012 16:30:00 +0100</pubDate><guid isPermaLink="false">iqoqi_event_842</guid></item><item><title><![CDATA[Two-photon spatial coherence in a two-photon temporal coherence experiment]]></title><link><![CDATA[http://iqoqi.at/events]]></link><description><![CDATA[Two-photon interference is a fundamental phenomenon in quantum mechanics and stands at the base of numerous experimental observations. Here another manifestation of this phenomenon is described, taking place at the beam splitter in photon counting experiments. A way of measuring this new manifestation is discussed. Specifically it is shown how the $r^2+t^2$ term which is behind previous observations of two-photon interference, may be observed also in photon counting experiments. This serves to emphasize the fundamental similarity between all two-photon experiments. Finally, two-photon states impinging on a Y junction are shown to exhibit two-particle quantum amplification. 

ref: http://arxiv.org/abs/1201.3111<br />Start Date: Thu, 09 Feb 2012 09:15:00 +0100]]></description><pubDate>Thu, 09 Feb 2012 09:15:00 +0100</pubDate><guid isPermaLink="false">iqoqi_event_848</guid></item><item><title><![CDATA[Effective range effects on resonance physics]]></title><link><![CDATA[http://iqoqi.at/events]]></link><description><![CDATA[Previous studies of strongly interacting Fermi gases have been mostly focused on wide resonance, where the effective range is negligible small. In this talk, two different type of resonances will be considered and in both cases the physics of effective range will be important. One is narrow Feshbach resonance where the effective range is large but negative; the other is dipolar interaction induced resonance where the effective range is positive, and can be very large for strong dipole interactions. We will illustrate the significant effects of the effective range, using high-temperature regime and single impurity problem as examples. I shall also discuss the effects with repulsive interaction and in low-dimensions. These results are closely related to experiments in Innsbruck on Li-K mixture and polar molecules.<br />Start Date: Wed, 08 Feb 2012 11:15:00 +0100]]></description><pubDate>Wed, 08 Feb 2012 11:15:00 +0100</pubDate><guid isPermaLink="false">iqoqi_event_853</guid></item><item><title><![CDATA[Transient Dynamics of Coherent Population Trapping in Thermal 87Rb Vapor]]></title><link><![CDATA[http://iqoqi.at/events]]></link><description><![CDATA[The study of coherent population trapping (CPT) resonances is of major interest for an all optical path to 
continuous generation of low temperature trapped atom samples using the proposed EIT-cooling scheme [1,2].
A magnetic-field insensitive high contrast CPT resonance, which has recently been demonstrated [3] on the D1 line of 87Rb,
appears paramount to success. For the example of this transition we analyze the experimental parameters that 
control the transient response of electromagnetically induced transparency. Using a pair of independent but phase-locked
diode lasers we observe quantum coherent free-induction decay on time scales exceeding several milliseconds in a 
buffer-gas vapor cell. We offer an intuitive model that explains creation and decay of the coherent dark state and 
point out the role of ground-state dephasing. The model is confirmed by numerical and approximate analytic solutions
of the quantum master equation whose predictions are tested quantitatively on experimental results [4].
[1] C. Morigi, Phys. Rev. A. 67  033402 (2003) (2011)
[2] M. Roghani et al., Phys. Rev. A 81  033418 (2010)
[3] Zibrov et al., Phys. Rev. A 81  013833 (2010)
[4] Meinert et al. Phys. Rev. A, accepted Dec 21, (2011)<br />Start Date: Fri, 03 Feb 2012 14:00:00 +0100]]></description><pubDate>Fri, 03 Feb 2012 14:00:00 +0100</pubDate><guid isPermaLink="false">iqoqi_event_847</guid></item><item><title><![CDATA[Topological Qubits with Majorana Fermions in Trapped Ions]]></title><link><![CDATA[http://iqoqi.at/events]]></link><description><![CDATA[We propose a method of encoding a topologically-protected qubit using Majorana fermions in a trapped-ion chain. This qubit is protected against major sources of decoherence, while local operations and measurements can be easily realized.
Furthermore, we show that an efficient quantum interface and memory for arbitrary multiqubit photonic states can be built, encoding them into a set of entangled Majorana-fermion (MF) qubits inside cavities.
Ref: arXiv:1111.5603<br />Start Date: Thu, 02 Feb 2012 13:30:00 +0100]]></description><pubDate>Thu, 02 Feb 2012 13:30:00 +0100</pubDate><guid isPermaLink="false">iqoqi_event_852</guid></item><item><title><![CDATA[Females in Science: Statistics and possible ways of understanding gender segregation]]></title><link><![CDATA[http://iqoqi.at/events]]></link><description><![CDATA[Some time ago I wanted to understand how the questions: "Why are there so few female scientists in Europe?" and "How can one increase the number of female scientists?" can be profoundly answered. 
I started doing some research on this topic and found certain interesting possible explanations and reasons. I thought that this might also be interesting for some of you and I am happy to give a talk about this topic.
I will start by presenting some statistics about scientists in the European Union ("She figures 2009" by the European commission). Then I will present some studies about physicists (UPEGM: Understanding Puzzles 
in the Gendered European map, financed by EU). The aim of UPGEM was not to present answers in the form of recipes of how to solve the problems of the lack of women in academia, but to present possible 
explanations by investigating the motivation of both, males and females for studying physics, staying in or leaving research.<br />Start Date: Wed, 01 Feb 2012 17:00:00 +0100]]></description><pubDate>Wed, 01 Feb 2012 17:00:00 +0100</pubDate><guid isPermaLink="false">iqoqi_event_850</guid></item></channel></rss>
