Noise-induced quantum transport

Ghosh, Pulak Kumar ; Barik, Debashis ; Ray, Deb Shankar (2005) Noise-induced quantum transport Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 71 (4). 041107_1-041107_10. ISSN 1539-3755

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We analyze the problem of directed quantum transport induced by external exponentially correlated telegraphic noise. In addition to quantum nature of the heat bath, nonlinearity of the periodic system potential brings in quantum contribution. We observe that quantization, in general, enhances classical current at low temperature, while the differences become insignificant at higher temperature. Interplay of quantum diffusion and quantum correction to system potential is analyzed for various ranges of temperature, correlation time and strength of external noise and asymmetry parameters. A possible experimental realization of the observed quantum effects in a superionic conductor placed in a random asymmetric dichotomous electric field has been suggested.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:59118
Deposited On:03 Sep 2011 12:01
Last Modified:18 May 2016 09:48

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