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Spectrochimica Acta Part A Molecular Spectroscopy

Influence of phonon squeezing on the transient spectrum

József Janszky, Петер Адам, Aleksandr V Vinogradov, T. Kobayashi

Published Jan 1, 1992• 14 citations
Publisher
DOI
10.1016/0584-8539(92)80195-3

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The present study investigates the transient spectrum (TS) of a two-level system that interacts with a generalized squeezed state without using the rotating wave approximation (RWA). We consider the purity of the optical field, which is developed in a generalized squeezed state, utilizing the linear entropy. The analytic expressions of the TS and field purity (FP) of the bipartite system are evaluated. Moreover, the study exhibits the influence of the squeezed parameter and some photons transition on the TS and FP. We obtain that the control of the FP may be generated based on an adequate choice of the photons transition and squeezed parameter. Such results can be utilized in the understanding and development of various tasks of quantum physics and optics.
Abstract The influence of the linear electron‐phonon coupling on the resonance fluorescence light of an impurity atom in solids is studied in the limits of low temperature and resonant excitation of the zero‐phonon transition. It is shown that with respect to the total intensity the electron‐phonon coupling gives rise only to a Debye‐Waller factor. The transient spectrum is studied taking into account the effect of the spectral apparatus. Further, it is shown that the intensity correlation can be modified substantially provided that the electron is coupled to a pseudolocal phonon mode of very narrow bandwidth.