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Anderson Localization of Expanding Bose-Einstein Condensates in Random Potentials
Laurent Sanchez-Palencia, David Clément, Pierre Lugan +3
We show that the expansion of an initially confined interacting 1D Bose-Einstein condensate can exhibit Anderson localization in a weak random potential with correlation length σ_R…
Controllable 3D atomic Brownian motor in optical lattices
Claude M. Dion, Peder Sjolund, Stefan J. H. Petra +4
We study a Brownian motor, based on cold atoms in optical lattices, where atomic motion can be induced in a controlled manner in an arbitrary direction, by rectification of isotrop…
Ultracold Bose Gases in 1D Disorder: From Lifshits Glass to Bose-Einstein Condensate
Pierre Lugan, David Clément, Philippe Bouyer +3
We study an ultracold Bose gas in the presence of 1D disorder for repulsive inter-atomic interactions varying from zero to the Thomas-Fermi regime. We show that for weak interactio…
Smoothing effect and delocalization of interacting Bose-Einstein condensates in random potentials
Laurent Sanchez-Palencia
We theoretically investigate the physics of interacting Bose-Einstein condensates at equilibrium in a weak (possibly random) potential. We develop a perturbation approach to derive…
Disorder versus the Mermin-Wagner-Hohenberg effect: From classical spin systems to ultracold atomic gases
Jan Wehr, Armand Niederberger, Laurent Sanchez-Palencia +1
We propose a general mechanism of random-field-induced order (RFIO), in which long-range order is induced by a random field that breaks the continuous symmetry of the model. We par…