依赖强度耦合的J－C模型中压缩真空初态场位相演化特性

Properties of the Phase Evolution for Initially Squeezed Vacuum State in the Intensity-Dependent Coupling J-C Model

本文应用Ｐｅｇｇ－Ｂａｒｎｅｔｔ位相理论，研究了依赖强度耦合的Ｊａｙｎｅｓ－Ｃｕｍｍｉｎｇｓ模型中压缩真空初态场位相演化特性，具体计算了场的厄米位相算符的期望值，位相概率分布及位相涨落，讨论了原子与压缩真空态场相互作用对场的位相性质的影响．

The properties of the phase evolution for an initially squeezed vacuum state in the intensity-dependent coupling Jaynes-Cummings model are studied by using the PeggBarnett phase theory. The expectation values of the Hermitic phase operator, the phase probability distribution and the fluctuation are calculated. The influenses of an atom interacting with squeezed vacuum on the phase properties are discused.