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Non-Markovian thermalisation of a two-level atom

Salo, J and Barnett, S M and Stenhohn, S (2006) Non-Markovian thermalisation of a two-level atom. Optics Communications, 259 (2). pp. 772-780. ISSN 0030-4018

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Abstract

We consider thermalisation and spontaneous decay of a two-level atom beyond the Markovian approximation. While the standard elimination of the continuum of radiation modes results in exponential decay represented by a Lindblad equation of motion, we use a simple toy model that takes into account the finite relaxation rate of the environment and present an exact non-Markovian master equation of the Nakajima-Zwanzig form. Because the exact derivation of non-Markovian equations has proved very difficult for all more realistic (and hence much more complicated) models, we analyze the master equation obtained and also discuss difficulties that are likely to arise with non-Markovian evolution operators. (C) 2005 Elsevier B.V. All rights reserved.

Item type: Article
ID code: 31071
Keywords: open quantum systems, non-markovian master equations, dynamical semigroups, quantum physics, diffusion, cavity model, Optics. Light
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 22 Jun 2011 15:22
    Last modified: 07 Dec 2013 01:04
    URI: http://strathprints.strath.ac.uk/id/eprint/31071

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