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Dr James Anglin Dr. Immanuel Bloch LMU Muenchen/MPQ for Quantum Optics Sektion Physik/LS Haensch Schellingstr. 4/III 80799 Munich, Germany imb@mpq.mpg.de Prof Michael S. Chapman School of Physics Georgia Institute of Technology 837 State Street Atlanta, GA 30332-0430 michael.chapman@physics.gatech.edu Prof Ike Chuang Massachusetts Institute of Technology Department of Physics Cambridge, MA 02138 ichuang@media.mit.edu Prof Eugene Demler Harvard University Physics Department Cambridge, MA 02138 demler@physics.harvard.edu Prof Ivan Deutsch Dept. of Physics and Astronomy University of New Mexico Albuquerque, NM 87131 ideutsch@tangelo.phys.unm.edu Prof Marvin D. Girardeau University of Arizona Optical Sciences Center Meinel Building 1630 E. University Blvd. Tucson, AZ 85721 girardeau@optics.arizona.edu Prof Mike Gunn School of Physics and Astronomy University of Birmingham Edgbaston, Birmingham, B15 2TT, United Kingdom jmfg@thsun7.ph.bham.ac.uk Prof Tin-Lun Ho Department of Physics 4188 Smith Lab Ohio State University Columbus, OH 43210-1106 ho@mps.ohio-state.edu Prof. Murray Holland JILA University of Colorado, Boulder, 440 Boulder, CO 80309-0440 murray.holland@colorado.edu Prof. Randy Hulet Rice University Dept. of Physics and Astronomy, MS61 Houston, TX 77251 randy@atomcool.rice.edu Prof Mark Kasevich Department of Physics Yale University New Haven, CT 06520-8120 kasevich@amo.physics.yale.edu Dr. Lev Khaykovich Laboratoire Kastler Brossel de l'ENS, 24 rue Lhomond, 75231, Paris Cedex 05 Lev.Khaykovich@lkb.ens.fr Dr Kate Kirby ITAMP 60 Garden Street, MS 14 Cambridge, MA 02138 Kkirby@cfa.harvard.edu Prof Wolfgang Ketterle Massachusetts Institute of Technology Department of Physics, 26-243 Cambridge, MA 02139 ketterle@mit.edu Prof Daniel Kleppner Massachusetts Institute of Technology Department of Physics, 26-237 Cambridge, MA 02138 kleppner@mit.edu Prof Mikhail Lukin Harvard University Physics Department Cambridge, MA 02138 mlukin@cfa.harvard.edu Prof Klaus Moelmer Institute of Physics and Astronomy University of Aarhus DK 8000 Aarhus C., Denmark moelmer@ifa.au.dk Prof Maxim Olshanii Dept. of Physics and Astronomy University of Southern California Los Angeles, CA 90089-0484 olshanii@physics.usc.edu Prof Chris J. Pethick NORDITA Blegdamsvej 17 DK-2100 Copenhagen Oe Denmark pethick@nordita.dk Prof. Mara Prentiss Harvard University Physics Department Cambridge, MA 02138 Mara@atomsun Prof. David E. Pritchard Massachusetts Institute of Technology Department of Physics 26-241 Cambridge, MA 02139 dpritch@MIT.EDU Prof Subir Sachdev Yale University Department of Physics New Haven CT 06520-8120 subir.sachdev@yale.edu Prof Joerg Schmiedmayer Physikalisches Institut Universität Heidelberg D-69117 Heidelberg,Germany joerg.schmiedmayer@physik.uni-heidelberg.de Prof Georgy V. Shlyapnikov FOM Institute AMOLF Kruislaan 407 1098 SJ, Amsterdam, The Netherlands shlyapnikov@amolf.nl Prof Sandro Stringari Dipartimento di Fisica, Universita' di Trento 38050 Povo, Italy stringar@science.unitn.it Prof John E. Thomas Department of Physics Box 90305 Duke University Durham, NC 27708-0305 jet@phy.duke.edu Dr. Joseph H. Thywissen Groupe Optique Atomique Institut d'Optique Bat 503, BP 147 91403 ORSAY, France joseph.thywissen@iota.u-psud.fr Dr Eddy Timmermans T-4, MS B-268 Los Alamos National Laboratory Los Alamos, NM 87545 eddy@t4.lanl.gov Prof Päivi Törmä Department of Physics University of Jyväskylä P.O.Box 35 FIN-40351 Jyväskylä, Finland paivi.torma@hut.fi Prof Peter Zoller Institute for Theoretical Physics University of Innsbruck 6020 Innsbruck, Austria peter.zoller@uibk.ac.at |
Friday, Nov. 2, 2001 |
Saturday, Nov. 3, 2001 |
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Georgy V. Shlyapnikov FOM Institute AMOLF I will discuss regimes of quasicondensates in (finite-temperature) 2D and 1D trapped gases. It will be shown that in the 2D case the regime of quasicondensation requires a very large gaseous sample. I will then discuss possibilities for the experimental realization of this regime. The discussion of the 1D case, will make a (very) brief overview of our theoretical results on quasiBEC in finite-temperature 1D trapped gases and Hannover experimental results on phase-fluctuating condensates in 3D elongated traps. I will then focus attention on vacuum (quantum) fluctuations of the phase. In most cases, at zero temperature one expects the (long) size of the sample to be much smaller than the Haldein phase coherence length. Therefore, the equilibrium state should be a true condensate. I will address the question of what really is "zero temperature"(?), under which conditions the vacuum fluctuations dominate over the thermal fluctuations of the phase(?), and whether one can observe the "Haldein quasicondensate" in experiments with 1D trapped gases(?). |
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Sandro Stringari Dipartimento di Fisica, In the talk I will first briefly review some exact results of statistical mechanics (Hohenberg-Mermin-Wagner theorem and its extension to zero temperature). I will then address the question of the behaviour of elementary excitations in the presence of harmonic traps with tight radial confinement, including the 3D cigar and the Tonks gas. I will then discuss the behaviour of 1D arrays of condensates generated by optical lattices. Special emphasis will be given to interference effects during the expansion, the behaviour of the critical temperature and of the axial oscillations which exhibit important Josephson features. General considerations on the signature of long-range order in the momentum distribution and its measurability in trapped condensates via Bragg spectroscopy will be finally addressed, introducing some of the topics discussed in the other presentations of the session. |
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Institute for Theoretical Physics This tutorial will focus on implementation of quantum information with quantum optical systems. Starting from the general requirements of quantum computing, quantum communications and precision measurement we will discuss specific systems and mechanism to engineer entanglement. Our focus will be on cold atoms as a tool in this program. This will include a discussion of both single atoms as information carriers and atomic ensembles. Specific questions to be addressed are various schemes for two-qubit gates (either as a dynamical gate or via geometric phases) and quantum communication with atomic ensembles (quantum repeater and teleportation). |