真空态与相干态的叠加态的熵压缩  

Entropic Squeezing and Quadrature Squeezing for the Superposition State of the Vacuum and the Coherent State

作　　者：李淑芬[1] 李洪才[1] 

机构地区：[1]福建师范大学物理与光电信息科技学院,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2004年第3期27-30,共4页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(A0210014);福建省教育厅基金资助项目(JA02168)

摘　　要：研究真空态与相干态|α〉叠加态的熵压缩性质,并比较熵压缩与方差压缩的关系.研究表明:当权重b及相干态的振幅R取不同值时,叠加态的熵压缩和方差压缩分别满足熵测不准关系和海森堡测不准关系,且熵压缩比方差压缩能更灵敏地量度光场的压缩性质.The entropic squeezing and quadrature squeezing for the superposition state of the vacuum and the coherent state ｜α〉 is studied, and their relations is discussed. The results show that: if the parameter b and the coherent state's swing R are given different values, the entropic squeezing is content with the entropic uncertainty relation and the quadrature squeezing satisfies the Hersenberg uncertainty relation, what's more, both of them, the entropic squeezing is a more sensitive measure for the squeezing effect of the field.

关 键 词：叠加态 位置熵 动量熵 熵压缩 方差压缩 

分 类 号：O431[机械工程—光学工程]