耦合SU（1，1）相干态双模Jaynes－Cummings模型中的场熵  

Evolution of Field Entropy of a Two-Mode Jaynes-Cummings Model Interacting with Correlated SU(1,1) Coherent State

作　　者：刘翔[1] 方卯发[1] 

机构地区：[1]湖南师范大学物理系

出　　处：《量子电子学》1996年第1期13-18,共6页

摘　　要：本文研究了初始处于耦合ＳＵ（１，１）相干态的双模双光子Ｊ－Ｃ模型中场熵的特性，具体讨论了场态参数以及原子叠加态与场态之间的相对位相对场熵演化的影响．结果表明，当原子处于相干陷阱态（相对位相为零），场态参数｜ξ｜→１时，原子与场将退耦处于纯态。In this paper, the evolution of the field entropy of a two-mode J-C model interacting with correlated SU(1,1) coherent state is investigated. The influences of theparameter of the field state and the relative phases between the atomic superpositionstate and the field state on the evolution of the field entropy is discussed. It is shown thatwhen the relative phase equals zero and the field state parameter |ξ|→1, the atom andthe field are in a disentangled pure state.

关 键 词：相干态 场熵 原子相干陷阱态 光学 双模J-C模型 

分 类 号：O431[机械工程—光学工程]