Underdamped quantum ratchets

被引：15

作者：

Denisov, S. ^{[1
]}

Kohler, S. ^{[1
]}

Haenggi, P. ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

来源：

EPL | 2009年 / 85卷 / 04期

关键词：

BROWNIAN MOTORS; TRANSPORT; DRIVEN; RECTIFICATION; RECTIFIERS; SYMMETRY;

D O I：

10.1209/0295-5075/85/40003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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. Copyright (C) EPLA, 2009

引用

页数：5

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