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Dissipative quantum systems in strong incoherent laser fields: Stochastic master equation and Floquet theory. (English) Zbl 0977.81187

Govaerts, Jan (ed.) et al., Contemporary problems in mathematical physics. Proceedings of the 1st international workshop, Cotonou, Republic of Benin, October 31-November 5, 1999. Singapore: World Scientific. 164-178 (2000).
Summary: A generalization of the stochastic master equation method applied to open quantum systems under the influence of strong incoherent laser fields is derived. Random telegraph models describing the laser noise and the Markovian approximation dealing with the system-bath couplings, as well as Floquet theory and time-dependent perturbation methods are used to facilitate both analytical and numerical solutions. We show that the two-level system relaxes to a steady state from the effect of the laser phase noise and the kinetic energy of this relaxation increases with the addition of dissipative terms, introduced by the coupling to the reservoir. A dynamical regime results: (i) localization; (ii) destruction of coherence; (iii) relaxation to equilibrium; (iv) damping effects. The four regimes are reached one after the other as a function of irradiation time.
For the entire collection see [Zbl 0958.00041].

MSC:

81V80 Quantum optics
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