Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 12: Quantengase (Unordnung)

Q 12.6: Vortrag

Montag, 19. März 2007, 17:45–18:00, 6J

Transport of Bose-Einstein condensates through two-dimensional disorder potentials — •Michael Hartung, Klaus Richter, and Peter Schlagheck — Institute for Theoretical Physics, University of Regensburg, D-93040 Regensburg, Germany

The rapid progress in the experimental techniques for Bose-Einstein condensates permits detailed studies of mesoscopic transport dynamics of interacting matter waves with rather high accuracy and high flexibility in the control of parameters. We particularly focus on the transport of a Bose-Einstein condensate through a two-dimensional disorder potential. To this end we developed, in analogy with our previous study on one-dimensional condensate transport [1], a two-dimensional numerical method to simulate the time-dependent propagation process within the mean-field approximation of the condensate. We discuss the influence of the repulsive atom-atom interaction on the transport process of the condensate, and focus here in particular on the phenomena of coherent backscattering and weak localization.
[1] T. Paul, P. Leboeuf, N. Pavloff, K. Richter, and P. Schlagheck Phys. Rev. A 72, 063621 (2005)