Phys. Rev. E 80, 021117 (2009) [5 pages]Switching mechanism in periodically driven quantum systems with dissipationReceived 8 January 2009; revised 9 April 2009; published 21 August 2009 We introduce a switching mechanism in the asymptotic occupations of quantum states induced by the combined effects of a periodic driving and a weak coupling to a heat bath. It exploits one of the ubiquitous avoided crossings in driven systems and works even if both involved Floquet states have small occupations. It is independent of the initial state and the duration of the driving. As a specific example of this general switching mechanism we show how an asymmetric double well potential can be switched between the lower and upper well by a periodic driving that is much weaker than the asymmetry. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.80.021117
DOI:
10.1103/PhysRevE.80.021117
PACS:
05.30.−d, 05.45.Mt, 05.70.Ln
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.