多模准对称叠加态光场广义电场分量的高次振幅压缩  

Effects of Generalized Nonlinear Higher-power Amplitude Squeezing of Generalized Electric Field Components in the Multimode State Light Fields with Quasi-symmetrical Superposition

作　　者：孙中禹[1] 杨志勇[2] 杨春燕[1] 

机构地区：[1]空军工程大学理学院,陕西西安710015 [2]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《量子光学学报》2013年第3期207-211,共5页Journal of Quantum Optics

基　　金：国家自然科学基金(61203201);陕西省自然科学基金(2012JQ8017)

摘　　要：构造了由多模真空场|{0j}〉q和四个一般多模泛函相干态|{fj(m)(x,y,x)}〉q(m=1,2,3,4)这五个态任意线性叠加而成的五态叠加多模泛函量子叠加态光场|ψ(5)(fj)〉q。利用多模压缩态理论,研究了态|ψ(5)(fj)〉q的广义电场分量在其不等强度准对称叠加条件广义非线性不等幂次Nj次方振幅压缩特性。结果发现:①态|ψ(5)(fj)〉q是一种普遍意义上的五态叠加多模泛函非经典光场;对于态|ψ(5)(fj)〉q的不等强度准对称叠加情形,无论压缩次数Nj取偶数还是取奇数,在一定的条件下,态|ψ(5)(fj)〉q的广义电场分量就可呈现出任意次不等幂次且周期性变化的广义非线性Nj次方振幅压缩效应;②态|ψ(5)(fj)〉q的多模泛函相干态中各模经典振幅和经典相位等的空间任意分布特征以及经典强度和经典振幅的任意非对称空间分布特征将对其不等幂次振幅压缩效应的压缩结果及压缩程度等产生直接的影响。The light field state ｜ψ（5）（fj）〉q,a five states superposition multimode quantum functional superposition,that is formed by linearly superposing the multi-mode vacuum state ｜{0j}〉q and four generalized multimode functional coherent states ｜{f（m）j（x,y,z）}〉q（m=1,2,3,4） and the properties of the GN unequal-power higher-power Nj-power Y-S effects is further studied generally.The results indicate that ① the state ｜ψ（5）（fj）〉q is a general multimode nonclassical light field of five functional coherent states superposition,when the state ｜ψ（5）（fj）〉q is a unequal intensity quasi-symmetrical superposition,while some certain conditions are satisfied,the generalized electric field components of the state ｜ψ（5）（fj）〉q can display any unequal-power GN Nj-power amplitude squeezing effect.② the any quasi-symmetrical spatial distribution of the classical intensity and the classical amplitude,and the spatial arbitrary distribution characterization of the classical amplitude and the classical initial phase of light field in ｜ψ（5）（fj）〉q would have a direct influence upon the squeezing results and squeezing degree of the unequal-power amplitude squeezing effects presented by the state ｜ψ（5）（fj）〉q.

关 键 词：不等幂次振幅压缩 多模纠缠态 五态叠加 准对称叠加 广义电场 

分 类 号：O431[机械工程—光学工程]