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Dissipationless Directed Transport in Rocked Single-Band Quantum Dynamics

Jiangbin Gong·Dario Poletti·Peter Hanggi
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Abstract

Using matter waves that are trapped in a deep optical lattice, dissipationless directed transport is demonstrated to occur if the single-band quantum dynamics is periodically tilted on one half of the lattice by a monochromatic field. Most importantly, the directed transport can exist for almost all system parameters, even after averaged over a broad range of single-band initial states. The directed transport is theoretically explained within ac-scattering theory. Total reflection phenomena associated with the matter waves travelling from a tilting-free region to a tilted region are emphasized. The results are of relevance to ultracold physics and solid-state physics, and may lead to powerful means of selective, coherent, and directed transport of cold particles in optical lattices.

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Jiangbin Gong, Dario Poletti, Peter Hanggi. 2007-02-28. Dissipationless Directed Transport in Rocked Single-Band Quantum Dynamics. https://doi.org/10.1103/physreva.75.033602

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