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Instituto de Ciencia de Materiales de Madrid |
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| Condensed Matter Theory | |||||
| Sigmund Kohler | home | cv | research | publications | ||||
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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[Condensed Matter Theory]
last modified: 18.11.2024 by
Sigmund Kohler