相位损耗腔中大失谐Jaynes-Cummings模型中熵的演化  

Entropy Evolution in the Jaynes-Cummings Model with Large Detuning inside a Phase Damping Cavity

作　　者：张立辉[1,2] 李高翔[1] 彭金生 

机构地区：[1]华中师范大学物理系 [2]武汉教育学院物理系武汉430010

出　　处：《光学学报》2002年第8期907-911,共5页Acta Optica Sinica

基　　金：国家自然科学基金 (6 0 0 780 16 );湖北省自然科学基金资助课题

摘　　要：研究了一位于相位损耗腔中大失谐下二能级原子与相干态场相互作用系统中 ,光场线性熵、原子线性熵以及光场原子系统线性熵的演化 ,讨论了原子初始状态和光场的平均光子数对各线性熵的影响。结果表明 ,光场线性熵和原子线性熵的演化都较强地依赖于原子初始状态 ,而系统线性熵的演化与原子初始状态无关。由于光场平均光子数的增加 ,光场、原子和系统的线性熵都会增加。The evolution of the linear entropies of field, atom and field atom coupling system in the system of a two level atom inside a phase damping cavity interacting with a coherent field under large detuning are investigated. The effects of atomic initial state and the mean photon number of the field on the above linear entropies are discussed. The results show that the linear entropies of both the field and the atom are strongly dependent on atomic initial state, but the evolution of the linear entropy of the field atom coupling system is independent of the atomic initial preparation. With the increasing of the mean photon number, the linear entropies of field, atom and field atom increase.

关 键 词：相位损耗腔 大失谐 JAYNES-CUMMINGS模型 相干态 线性熵 二能级原子 光场 量子光学 相互作用 演化特性 

分 类 号：O431.2[机械工程—光学工程]