双模最小关联混态的纠缠及其量子起伏  

The entanglement degree and quantum variance of two-mode minimum correlation state

作　　者：韩峰[1] 杜少将[2] 

机构地区：[1]曲阜师范大学物理工程学院,山东曲阜233155 [2]济宁学院物理系,山东曲阜273155

出　　处：《长春大学学报》2008年第2期31-35,共5页Journal of Changchun University

摘　　要：研究了最小关联态的纠缠度与相关参数之间的关系。分析了不同参数情况下最小关联态发生纠缠时相关参数的取值范围以及全量子起伏与相关参数的关系;另外进一步分析了最小关联态的W ehrl熵,同时对标准EPR型纠缠态为的纠缠度作了进一步的计算。One of generalized Einstein-Podolsky-Rosen （EPR） type states-the two-mode minimum correlation state is studied. We calculate the degree of entanglement and Wehrl＇s entropy, and analyze the relation of the degree of entanglement and squeezing parameters. In the meantime, we study the minimum values of squeezing parameters in different conditions when minimum-correlation state is entangled. We also testify that the standard EPR-type entanglement state is a maximum entanglement state, and we analyze the relation of Wehrl＇s entropy and related parameters in the meanwhile.

关 键 词：纠缠度 全量子起伏 WEHRL熵 

分 类 号：O431.2[机械工程—光学工程]