T-C模型中纠缠原子与相干态光场相互作用的场熵演化特性  

Field Entropy Evolution of Entangled Atoms Interacting with Coherent State Light-field in T-C Model

作　　者：张多[1] 

机构地区：[1]武汉工业学院数理科学系,湖北武汉430023

出　　处：《河北师范大学学报（自然科学版）》2008年第5期616-619,共4页Journal of Hebei Normal University：Natural Science

基　　金：武汉工业学院校立科研项目(07Q23)

摘　　要：利用全量子理论,研究了一对纠缠原子与相干态光场相互作用中场熵的演化特性.讨论了原子间偶极-偶极相互作用、光场强度与2原子纠缠度对场熵演化特性的影响.结果表明:原子间偶极-偶极相互作用强度增加使场熵的演化周期增大;初始光场强度增加,场熵平均值先增大后减小,振荡周期变大;场熵平均值随初始纠缠度增大反而减小,但振荡幅度随初始纠缠度增大而增大.The field entropy evolution of two entangled-atoms interacting with coherent state light-filed is studied by means of quantum theory. The influence of the dipole-dipole interaction, the intensity of field and the two-atom＇s entanglement on the field entropy properties are studied. The results show that the increasing of the atomic dipole-dipole interaction will increase evolution period of field entropy. The mean-value of entropy will increase at first and then decrease with the intensity of field increasing. The oscillation period of field entropy increases with the increase of the intensity of field. The mean-value of field entropy will decrease with the increasing of atoms＇ entanglement, but the oscillation of field entropy will increase with the increasing of the entanglement of atoms.

关 键 词：纠缠原子 相干态 场熵 偶极-偶极相互作用 

分 类 号：O431.2[机械工程—光学工程]