非对称多模泛函叠加态光场的等幂高次Y压缩——广义电场分量的等幂高次Y压缩效应  

Effect of equal-power higher-power Y-squeezing of asymmetrical multimode functional superposition state light-field: Properties of equal-power higher-power Y-squeezing of generalized electric-field component

作　　者：白少民[1] 杨志勇[2] 胡晓云[3] 樊延虎[1] 

机构地区：[1]延安大学物理与电子信息学院,陕西延安716000 [2]西安电子科技大学技术物理学院,陕西西安710071 [3]西北大学物理学系,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2004年第4期404-408,共5页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省自然科学基金资助项目(2001SL04);陕西省科技攻关课题资助项目(2002K05 G9)

摘　　要：目的　研究非对称三态叠加多模复共轭泛函叠加态光场的广义电场分量(即第二正交相位分量)的等幂次高次Y压缩特性,为量子光通信等的实验研究提供理论依据。方法　利用量子力学中的态叠加原理构造了非对称三态叠加多模复共轭泛函叠加态光场;利用多模压缩态理论研究其广义电场分量的等幂次Y压缩特性。结果　按照多模辐射光场的广义非线性等幂次N次方Y压缩的定义,经过计算得到了在3种情况下非对称三态叠加多模复共轭泛函叠加态光场的广义电场分量存在任意奇数次和任意偶数次的广义非线性等幂次高次Y压缩效应的压缩条件和压缩结果。结论　①在一定的条件下,所构造的非对称三态叠加多模复共轭泛函叠加态光场的广义电场分量可呈现出周期性变化的等幂次高次Y压缩效应;②光场经典强度和经典振幅的任意非对称空间分布特征和光场经典初始相位的任意空间分布特征等对上述光场的等幂次高次Y压缩效应的压缩程度和压缩深度将产生直接的影响。Aim Research properties of equal-power higher-power Y-squeezing of generalized electric-field component (or the second perpendicular phase component) of asymmetrical multimode functional superposition state light-field with superposition of three macroscopically distinct quantum states,proffer theory reference for experiment research of quantum optical communication.Methods It is constructed that the three-states superposition multimode functional superposition state light-field according to the superposition principle of quantum state in quantum mechanics, the properties of equal-power higher-power Y-squeezing of generalized electric field component of the state are studied firstly by utilizing the multimode squeezed state theory.Results Formula (11),(13) and (17) give the effect of generalized nonlinear at will odd numbers and even number equal-power Y-squeezing of generalized electric-field component of asymmetrical multimode functional superposition state light-field with superposition of three macroscopically distinct quantum states under the three kinds situation by course of define of generalized nonlinear equal-power N-power Y-squeezing multimode.Conclusion ① Under a series of fixed conditions, the generalized electric-field component of the asymmetrical multimode complex conjugate functional superposition state light-field can display the effect of generalized nonlinear equal-power higher-power Y-squeezing which changes periodically and alternatively.② The any asymmetrical spatial distribution of the classical intensity and the classical amplitude, and the any spatial distribution features of the initial classical phase of light-field in the state would have a direct influence upon the squeezed degree and squeezed depth of equal-power higher-power Y-squeezing present by the generalized electric-field component in the state.

关 键 词：多模复共轭泛函相干态 多模真空态 三态叠加 多模压缩态 广义电场分量 高次Y压缩 

分 类 号：O432.1[机械工程—光学工程]