|Instituto de Ciencia de Materiales de Madrid|
|Condensed Matter Theory|
|Sigmund Kohler||home | cv | research | publications|
Underdamped quantum ratchetsSergey Denisov, Sigmund Kohler, and Peter Hänggi
Europhys. 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.
[Condensed Matter Theory]
last modified: 15.10.2018 by Sigmund Kohler