Creation and destruction of the coherence for quantum systems in regular and stochastic fields

Alexander V. Gorokhov

doi:10.1117/12.696856

8 August 2006 Creation and destruction of the coherence for quantum systems in regular and stochastic fields

Alexander V. Gorokhov

Proceedings Volume 6165, Saratov Fall Meeting 2005: Laser Physics and Photonics, Spectroscopy and Molecular Modeling VI; 61650I (2006) https://doi.org/10.1117/12.696856
Event: Saratov Fall Meeting 2005, 2005, Saratov, Russian Federation

Abstract

The problem of the coherent states generation with definite parameters for multilevel quantum systems is investigated. The interaction with external environment and stochastic fields can destroy of the coherence. The competition of these processes is considered on a base of Fokker - Planck Equations approach, deriving from 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 the nonideal resonator are considered. Average over the realizations of stochastic fields is performed for the case of white gaussian noise and Kubo - Anderson process. Explicit formulas for transition probabilities, longitudinal and transversal relaxation times and shape of radiation line are obtained.

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Alexander V. Gorokhov "Creation and destruction of the coherence for quantum systems in regular and stochastic fields", Proc. SPIE 6165, Saratov Fall Meeting 2005: Laser Physics and Photonics, Spectroscopy and Molecular Modeling VI, 61650I (8 August 2006); https://doi.org/10.1117/12.696856

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KEYWORDS

Chemical species

Stochastic processes

Quantum physics

Gaussian pulse

Quantum cryptography

Electromagnetism

Molecular spectroscopy

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