Abstract
The entanglement between a two-level atom and single-mode quantized field in a squeezed state inside a phase-damped cavity is investigated. The time evolution of the scaled atomic phase space entropy and atomic population inversion of a system is presented. Analytical results under certain parametric conditions are obtained, by means of which we analyze the influence of decoherence and squeeze parameter on the evolution of the atomic phase space entropy, atomic inversion and atomic Q-function. An interesting monotonic relation between the scaled atomic phase space entropy and nonlocal correlation behavior is observed during the time evolution.