高斯型耦合Tavis-Cummings模型的场熵演化特性  

Entropy Properties of Atoms in Tavis-Cummings Model with Gaussian Coupling

作　　者：邹艳[1] 

机构地区：[1]德州学院物理系

出　　处：《德州学院学报》2007年第6期33-36,共4页Journal of Dezhou University

摘　　要：利用全量子理论研究了高斯型耦合Tavis-Cummings模型的量子纠缠特性,运用数值计算方法讨论了原子垂直于腔轴的运动速度和系统的初态对场-两原子纠缠的影响.结果表明,原子的运动速度对纠缠具有明显的调制作用;光场的初始光子数越大,熵的Rabi振荡频率越大,振幅越小;而改变原子的初态时,熵的时间演化规律是相似的.We investigate the entanglement time evolution of Tavis--Cummings model with Gausslan coupling by means of quantum theory. Using the numerical method, the influences of the atomic motion perpendicularity to the axes of resonant cavity and initial states of the system on the entanglement between the field and two identical atoms are discussed. The results of the studies indicate that the motion affects the entanglement. When the mean photon number increases,the Rabi frequency increases while the vibration amplitude decreases. When the atomic initial state changes,the entanglement appears the similar time evolution.

关 键 词：量子光学 Tavis—Cummings模型 高斯型耦合系数 量子纠缠 

分 类 号：O431.2[机械工程—光学工程]