多光子么正算符作用于相干态的振幅立方压缩  

AMPLITUDE—CUBED SQUEEZING OF MULTIPHOTON UNITARY OPERATORS ACTING ON COHERENT STATE

作　　者：季德璜[1] 

机构地区：[1]苏州大学物理系

出　　处：《苏州大学学报（自然科学版）》1993年第3期226-229,共4页Journal of Soochow University(Natural Science Edition)

摘　　要：本文研究了多光子非线性光学过程中的振幅立方压缩,证明了n光子么正算符S_n(y)(n≥2)对非真空相干态的作用会产生振幅立方压缩,而S_n(y)(n≥2,n≠6)对真空态的作用不会产生振幅立方压缩。发现6个光子的么正算符S_6(y)对真空态的作用可以产生振幅立方压缩,这表明振幅立方压缩是一种独立于二阶压缩,反聚束以及亚泊松统计分布的新的光场非经典效应。The amplitude—cubed squeeging of multiphoton unitary operators acting on coherent state is studied. It is shown that amplitude—cubed squeeging can be created in the first order approximation by n—photon unitary operators S_n(y) (n≥2) acting on the coherent state |α>(α≠0) and can not be created by S_n(y) (n≥2, n≠6) acting on the vacuum state. It is found that amplitude—cubed squeeging can be created by 6—photon unitary operator S_6(y)acting on the vacuum state, and this shows that the amplitude—cubed squeeging is a new nonclassical effect of light field which is independent of the second order squeeging, antibunching and sub—poisson statistics.

关 键 词：相干态 真空态 多光子 么正算符 

分 类 号：O431[机械工程—光学工程]