单模辐射场作用过程中二能级原子的Wigner-Yanase偏态信息  

Wigner-Yanase skew information in two-level atoms interacting with single mode field

作　　者：刘万芳[1] 李敏[2] 

机构地区：[1]安庆师范学院物理与电气工程学院,安庆246011 [2]集美大学诚毅学院,厦门351100

出　　处：《四川大学学报（自然科学版）》2014年第6期1244-1248,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：安徽省高校优秀青年基金(2010SQRL107);安徽省自然科学基金(1408085QA15)

摘　　要：研究了与单模辐射场作用过程中二能级原子的Wigner-Yanase信息.原子与真空场作用时,总的Wigner-Yanase偏态信息呈现出周期性的丢失与恢复现象;原子与相干光场作用时,随着时间的演化,总的Wigner-Yanase偏态信息会完全丢失掉,但合适的原子初态及强的相干场,对偏态信息的丢失有延缓作用.We investigate the changes of the Winger-Yanase information of a two-level atom interacting with single mode field. The results show that the total Winger-Yanase information of atom interacting with vacuum field periodically loses and revives. As the time increases, the total Winger-Yanase infor- mation of atom interacting with the coherent state loses completely. An appropriate initial state of atom and a strong coherent state can delay loss of the total Winger-Yanase information.

关 键 词：二能级原子 Wigner-Yanase偏态信息 单模辐射场 

分 类 号：O431.2[机械工程—光学工程]