高斯型耦合多光子Tavis-Cummings模型中场与原子的纠缠特性  

The Entangled Properties of Field and Two Atoms in Tavis-Cummings Model with Multi-Photon Gaussian Coupling

作　　者：张学光[1] 萨楚尔夫[1,2] 冯川[1] 李红星[1] 

机构地区：[1]内蒙古师范大学物理与电子信息学院,内蒙古呼和浩特010022 [2]内蒙古师范大学图书馆,内蒙古呼和浩特010022

出　　处：《量子光学学报》2012年第3期256-261,共6页Journal of Quantum Optics

基　　金：内蒙古自然科学基金(2009MS0112);内蒙古师范大学研究生科研创新基金(CXJJS10036)

摘　　要：利用全量子理论,研究了多光子跃迁过程高斯型耦合Tavis-Cummings模型中场与原子的纠缠特性。讨论了多光子原子运动速度、光场初态的平均光子数及跃迁光子数对场与原子之间纠缠特性的影响。结果表明:原子运动速度的变化改变了场熵演化曲线的振荡时域;光场初态影响场熵演化曲线的周期性;跃迁光子数的增加使场熵演化曲线的振荡频率和场与原子之间的平均纠缠度变大。The properties of entanglement evolution between field and two atoms in Gaussian coupling Tavis-Cummings model in the multi-photon transition process are studied on the quantum theory.The influence on the properties of entanglement evolution between field and two atoms from atomic motion,the mean photon number in initial states of the light field,number of transition photons in the multi-photon transition process are discussed.The results show that the variation of atomic motion changes the time for the effective action to the evolution of field entropy.Initial states of the light field affect the evolution period to field entropy.With the increasing of the number of transition photons,the oscillation frequency and the mean degree of entanglement between field and atoms become larger.

关 键 词：量子光学 多光子Tavis-Cummings模型 高斯型耦合 量子纠缠 

分 类 号：O43[机械工程—光学工程]