Quantum phase dynamics of an initially one-mode amplitude-squeezed field interacting with a two-state molecular system

Abstract

We investigate the quantum phase dynamics of an initially one-mode amplitude-squeezed photon field interacting with a two-state molecular system by using the numerically exact approach developed in a previous paper. As shown in previous studies, the collapses and revivals of Rabi oscillation of the molecular population are observed for the amplitude-squeezed field, while significant differences are detected in the amplitude of oscillation and the revival–collapse period between amplitude-squeezed and coherent fields. These features are found to be closely related to the differences in the dynamical behavior of the Pegg–Barnett phase and the quasiprobability ( Q function) distributions for these two photon fields.