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|Title:||Quantum ratchets for periodically kicked cold atoms and Bose-Einstein condensates|
|Authors:||Casati, G. |
|Source:||Casati, G., Poletti, D. (2007-05-01). Quantum ratchets for periodically kicked cold atoms and Bose-Einstein condensates. Journal of Physics: Conference Series 67 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/1742-6596/67/1/012001|
|Abstract:||We study cold atoms and Bose-Einstein condensates exposed to time-dependent standing waves of light. We first discuss a quantum chaotic dissipative ratchet using the method of quantum trajectories. This system is characterized by directed transport emerging from a quantum strange attractor. We then present a very simple model of directed transport with cold atoms in a pair of periodically flashed optical lattices. Finally 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 show that the many-body atom-atom interactions, treated within the mean-field approximation, can generate directed transport. © 2007 IOP Publishing Ltd.|
|Source Title:||Journal of Physics: Conference Series|
|Appears in Collections:||Staff Publications|
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