一种新的偶奇非线性相干态中测量相位算符的压缩效应  

Squeezing Properties of Measurement Phase Operator in a New Kind of Even and Odd Nonlinear Coherent States

作　　者：于国臣[1] 孙红[1] 张海新[1] 董超[1] 孔丽静[1] 

机构地区：[1]武警北京指挥学院数理教研室,北京100012

出　　处：《量子光学学报》2003年第4期158-161,共4页Journal of Quantum Optics

摘　　要：利用Barnett和pegg提出的测量相位算符讨论了一种新的偶奇非线性相干态的压缩效应。结果表明,在这种偶奇非线性相干态中测量相位算符不存在CN和SN类压缩,只存在CS类压缩。利用数值计算方法研究了CS类压缩效应,结果表明与通常的偶奇相干态的不同的是,偶非线性相干态在大区域内出现压缩效应而奇非线性相干态在小区域内才出现压缩效应。The spueezing properties in a new kind of even and odd nonlinear coherent states are discussed via the measurement phase operators introduced by Barnett S M and Pegg D T. It is found that there are only a kind of CS squeezing but there are not CN and SN squeezing. Using the numerical calculation, we studied the squeezing properties of CS. It is shown that the CS squeezing properties of the even and odd nonlinear coherent states are different from those of usual even and odd coherent states. Squeezing exists for the new even nonlinear coherent states in the wide range, while small range for the new odd nonlinear coherent states.

关 键 词：偶奇非线性相干态 测量相位算符 压缩效应 量子光学 厄密相位算符 湮没算符 

分 类 号：O431.2[机械工程—光学工程]