两个不同多模奇相干态光场可分辨性分析  

Analyzing of the separability problem between two different multi-mode odd coherent state light fields

作　　者：高荣发[1] 李英[1] 张继良[1] 陈永庄[1] 刘宝盈[1] 

机构地区：[1]商洛师范专科学校量子光学与量子信息研究所,陕西商州726000

出　　处：《西北大学学报（自然科学版）》2005年第4期397-400,共4页Journal of Northwest University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(60278010);陕西省教育厅专项科研基金资助项目(03JK212)

摘　　要：目的讨论两个不同多模奇相干态的可分辨性与其内禀参数之间的关系。方法采用两个不同态的密度算符距离函数方法,从理论上研究两个不同多模奇相干态光场之间的距离。结果得到了两个不同多模奇相干态之间的距离函数Do(rj,rj′)。结论结构相同的两个多模奇相干态光场之间不可分辨;模数相同且相互平行的两个多模奇相干态光场具有相似性,只能部分地分辨;模数相同且相互正交的两个多模奇相干态光场在一定条件下完全可分辨。Aim To discuss the dependent relationship between separability and inner parameters of two different multi-mode odd coherent state light fields. Methods The distance between two different multi-mode odd coherent state light fields was analyzed theoretically by the method of distance functions of density operator. Results The distance functions Do（rj,rj＇） which is between two different multi-mode odd coherent state light fields is obtained. Conclusion Two different multi-mode odd coherent state light fields with same configuration can＇t be separated from each other. Two parallel multi-mode odd coherent state light fields with same modulus can but partly be separated. Two orthogonal multi-mode odd coherent state light fields with same modulus can be separated completely at certain conditions.

关 键 词：量子光学 密度算符 距离函数 多模奇相干态 可分辨性 

分 类 号：O431[机械工程—光学工程]