Controlling the Ratchet Effect for Cold Atoms

Details Controlling the Ratchet Effect for Cold Atoms Controlling the Ratchet Effect for Cold Atoms

2007-08-22

arxiv.org/abs/0708.3026v4

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.100.044104

Low-order quantum resonances manifested by directed currents have been realized with cold atoms. Here we show that by increasing the strength of an experimentally achievable delta-kicking ratchet potential, quantum resonances of a very high order may naturally emerge and can induce larger ratchet currents than low-order resonances, with the underlying classical limit being fully chaotic. The results offer a means of controlling quantum transport of cold atoms.

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