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Sigmund Kohler |
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Underdamped quantum ratchetsSergey Denisov, Sigmund Kohler, and Peter HänggiEurophys. Lett. 85, 40003 (2009) 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. arXiv:0807.0196 [cond-mat] |
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last modified: 2.5.2026 by
Sigmund Kohler