Underdamped quantum ratchets
S. Denisov, S. Kohler, and P. Hanggi

TL;DR
This paper explores how weak dissipation can induce a quantum ratchet current through symmetry violations and bath-induced superpositions, revealing a novel mechanism for directed quantum transport.
Contribution
It introduces a Floquet-Markov master equation approach to analyze dissipation effects, predicting a dissipation-induced quantum ratchet current under time-reversal symmetric driving.
Findings
Dissipation can generate quantum ratchet currents even with symmetric driving.
Quantum ratchet current arises from bath-induced superpositions of Floquet states.
The study provides a new understanding of quantum transport mechanisms under weak dissipation.
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.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
