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|Title:||Interaction-induced quantum ratchet in a Bose-Einstein condensate|
|Source:||Poletti, D., Benenti, G., Casati, G., Li, B. (2007-08-24). Interaction-induced quantum ratchet in a Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical Physics 76 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.76.023421|
|Abstract:||We study the dynamics of a dilute Bose-Einstein condensate confined in a toroidal trap and exposed to a pair of periodically flashed optical lattices. We first prove that in the noninteracting case this system can present a quantum symmetry which forbids the ratchet effect classically expected. We then show how many-body atom-atom interactions, treated within the mean-field approximation, can break this quantum symmetry, thus generating directed transport. © 2007 The American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
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