Stochastic resonance and nonlinear response in a dissipative quantum two-state system

Pareek, T. P. ; Mahato, Mangal C. ; Jayannavar, A. M. (1997) Stochastic resonance and nonlinear response in a dissipative quantum two-state system Physical Review B, 55 (15). pp. 9318-9321. ISSN 0163-1829

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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.55.9318

Related URL: http://dx.doi.org/10.1103/PhysRevB.55.9318

Abstract

We study the dynamics of a dissipative two-level system, driven by a monochromatic ac field, starting from the usual spin-boson Hamiltonian. The quantum Langevin equations for the spin variables are obtained. The amplitude of the coherent oscillations in the average position of the particle is studied in the high-temperature limit. The system exhibits quantum stochastic resonance in qualitative agreement with earlier numerical results.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:14461
Deposited On:12 Nov 2010 14:14
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