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Canadian Journal of Physics

On atomic squeezing in a generalized multiphoton Jaynes–Cummings model

Rui‐Hua Xie

Published May 1, 1996• 2 citations
Publisher

Abstract

Dynamical evolution of atomic squeezing is studied in a generalized multiphoton Jaynes–Cummings model. The influence of some nonlinear interactions and the counter-rotating wave term on the squeezing is discussed in detail. These nonlinear interactions influence the squeeze duration and its revival period. In a multiphoton transition, switching on the counter-rotating wave term has a much more destructive effect on the squeezing, but this destructive effect is weakened due to the presence of a nonlinear Kerr-like medium.

DOI
10.1139/p96-047

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Dynamical evolution of atomic squeezing is studied in a generalized multiphoton Jaynes–Cummings model. The influence of some nonlinear interactions and the counter-rotating wave term on the squeezing is discussed in detail. These nonlinear interactions influence the squeeze duration and its revival period. In a multiphoton transition, switching on the counter-rotating wave term has a much more destructive effect on the squeezing, but this destructive effect is weakened due to the presence of a nonlinear Kerr-like medium.
We have studied the squeezing properties of a field and atom in a two-level system. The influence of nonlinear interactions (Le. the arbitrary intensity-dependent coupling of a single-mode field to a single two-level atom, the nonlinear interaction of the field with a nonlinear Kerr-like medium) on the squeezing is discussed in detail in the rotating wave approximation (RWA). We show numerically that the effect of the virtual-photon field suppresses dipole squeezing predicted in the RWA and leads to an increased squeeze revival period; the suppressed squeezing can be revived due to the presence of the nonlinear Kerr-like medium.