Quantum systems in regular and stochastic fields. Creation and destruction of the coherence |
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Authors: | A V Gorokhov |
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Institution: | (1) Department of General and Theoretical Physics, Samara State University, Samara, Russia |
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Abstract: | The problem of the coherent state generation with definite parameters for multilevel quantum systems is investigated. The
interaction with external environment and stochastic fields can destroy the coherence. The competition of these processes
is considered on the basis of the Fokker-Planck equations approach, derived from the master equation for the density matrix
of the system. Examples of the coherent states dynamics for two-level atoms in an external stochastic field in a nonideal
resonator are considered. Average over the realizations of stochastic fields is performed for the case of the white Gaussian
noise and the Kubo-Anderson process. Explicit formulas for probability and shape of radiation line are obtained.
The text was submitted by the author in English. |
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