An underdamped quantum ratchet

Ghosh, Pulak Kumar ; Ray, Deb Shankar (2007) An underdamped quantum ratchet Journal of Statistical Mechanics: Theory and Experiment, 2007 (3). 03003-03003. ISSN 1742-5468

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We consider the underdamped Brownian dynamics of particles in a symmetric periodic potential by taking into account systematic quantum corrections order by order and show that a very slow asymmetric and periodic modulation with zero temporal average can induce directed quantum transport in the limit , where ωs≫γ≫1/τ, ωs,γ and t are the system frequency, the dissipation constant and the time period of the modulation, respectively.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics.
ID Code:59126
Deposited On:03 Sep 2011 12:03
Last Modified:03 Sep 2011 12:03

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