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arXiv · 0807.0196

Underdamped quantum ratchets

S. Denisov·S. Kohler·P. Hanggi
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Abstract

We investigate the quantum ratchet effect under the influence of weak dissipation which we treat within a Floquet-Markov master equation approach. A ratchet current emerges when all relevant symmetries are violated. Using time-reversal symmetric driving we predict a purely dissipation-induced quantum ratchet current. This directed quantum transport results from bath-induced superpositions of non-transporting Floquet states.

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S. Denisov, S. Kohler, P. Hanggi. 2009-02-24. Underdamped quantum ratchets. https://doi.org/10.1209/0295-5075/85/40003

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