非对称三态叠加多模泛函叠加态光场的高次压缩——广义电场分量的不等幂次和压缩效应研究  

Higher-power squeezing in the macroscopically distinct three quantum states superposition multimode functional superposition state light field——On effect of non-equal-power sum-squeezing of generalized electric field component

作　　者：白少民[1] 杨志勇[2] 张玉强[1] 邵思飞[1] 

机构地区：[1]延安大学物理与电子信息学院,延安716000 [2]西安电子科技大学技术物理学院,西安710071

出　　处：《原子与分子物理学报》2006年第4期659-663,共5页Journal of Atomic and Molecular Physics

基　　金：陕西省自然科学基金(2001SL04);陕西省科技攻关课题(2002K05-G9);延安大学科研课题(YD2003-103)

摘　　要：多模真空态|{0j}〉q与两个空间强度分布特征不同的多模复共轭泛函相干态|{f(j a)*(x,y,z)}〉q和|{f(j b)*(x,y,z)}〉q的线性叠加组成的三态叠加多模泛函叠加态光场|ψ(f3)〉q,利用多模压缩态理论,研究了态|ψ(f3)〉q中广义电场分量的不等幂次高次和(H)压缩特性.结果表明:在一定的条件下,态|ψ(f3)〉q的广义电场分量可呈现出周期性变化的任意奇数次和任意偶数次的不等幂次高次H压缩效应;光场的经典振幅和经典初始相位的任意非对称空间分布特征对其压缩程度和压缩深度等压缩特性将产生直接的影响.It is constructed that the three-states superposition multimode functional superposition state light field ｜Ψf^（3）〉q is made up of the multimode vacuum state ｜{0j}〉q,and the two different multimode complex functional coherent states ｜{fj^（a）＊（x,y,z）}〉q and ｜{fj^（b）＊（x ,y, z）｜〉q which have rather different spatial intensity distribution characteristic according to the superposition principle of quantum state in quantum mechanics, the properties of non-equal-power any odd-numbers-power and any even-numbers-power higher-power sum-squeezing （H-squeezing） of generalized electric field component of the state [{Ψf^（3）〉q is studied firstly by utilizing the multimode squeezed state theory. It is shown that under a series of fixed conditions, the generalized electric-field component of the state ｜Ψf^（3）〉q can display the effect of generalized nonlinear non-equal-power higher-power H-squeezing which changes periodically and alternatively; and the any asymmetrical spatial distribution of the classical amplitude and classical phase of light-field in the state ｜Ψf^（3）〉q would have a direct influence upon the squeezed degree and squeezed depth of non-equal-power higher-power H-squeezing present by the generalized electric-field component in the state ｜Ψf^（3）〉q.

关 键 词：量子光学 多模复共轭泛函相干态 广义电场分量 不等幂次高次H压缩 

分 类 号：O431.2[机械工程—光学工程]