Eliade Stefanescu - New optical equations for the interaction of a two-level atom with a single mode of the electromagnetic field

Version 1

      Publication Details (including relevant citation   information):

      Physica A: Statistical and Theoretical Physics 161 (1989)   525-538.

      Abstract:

      Based on the theory of open quantum systems we derive new   optical  equations, more general than the conventional   optical Bloch equations:  new terms describing couplings of   the observables through the  environment and an asymmetry of   the dephasing rates for the two  polarization observables   are obtained. We show that, due to the new  coupling of the   population with the polarization through the  environment,   negative values of the absorption coefficient are possible.    We find experimental evidence of this new coupling by comparing   the  bistability characteristic obtained from the new   equations, for a  nonlinear Fabry-Perot resonator, with the   experimental data of Sandle  and Gallagher.

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