Generalized Einstein B coefficients for coherently driven three-level systems
Mompart Penina, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Corbalán, Ramón (Universitat Autònoma de Barcelona. Departament de Física)
American Physical Society

Date:	2001
Abstract:	Generalized Einstein B coefficients for coherently driven closed three-level systems are introduced by means of the quantum-jump technique. The nonreciprocity between stimulated emission and absorption for both one-photon and two-photon gain and loss processes has been studied and quantified in terms of the rates of the particular incoherent processes present in each three-level system. Some general properties of these generalized Einstein B coefficients have been found. In particular, whenever the generalized Einstein B coefficient for one-photon gain overcomes that for one-photon loss then the generalized Einstein B coefficient for two-photon loss overcomes that for two-photon gain, and vice versa. Finally, we have obtained simple analytical expressions indicating the way to maximize the asymmetry between stimulated emission and absorption coefficients either for one-photon or for two-photon processes.
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Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Physical review. A, Vol. 63, Issue 6 (May 2001) , p. 063810-1-063810-12, ISSN 1050-2947

DOI: 10.1103/PhysRevA.63.063810

12 p, 179.9 KB

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