4个多模泛函相干态叠加态的等幂偶次Y压缩  

Effect of Equal-power Even-number-power Y-squeezing of Multimode Superposition State Light-Field Made up of Four Different Multimode Functional Coherent States

作　　者：刘宝盈[1] 杨志勇[2] 石康杰[1] 雷小丽[1] 

机构地区：[1]西北大学光子学与光子技术研究所西北大学光电子技术省级重点开放实验室 [2]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《光电子．激光》2004年第9期1108-1112,共5页Journal of Optoelectronics·Laser

基　　金：陕西省自然科学基金资助项目(2001SL04);陕西省科技攻关项目(2002K05 G9);陕西省教育厅专项科研基金资助项目(01JK062)

摘　　要：构造了由多模泛函相干态|{fj(xj,yj,zj)}〉q、多模泛函相干态的相反态|{-fj(xj,yj,zj)}〉q、多模复共轭泛函相干态|{f j(xj,yj,zj)}〉q四态线性叠j(xj,yj,zj)}〉q和多模复共轭泛函相干态的相反态|{-f 加组成的四态叠加多模泛函叠加态光场|Ψ(4)(fj)〉q。利用多模压缩态理论,研究了态|Ψ(4)(fj)〉q的广义非线性等幂偶次Y压缩特性。结果表明:在一定条件下,态|Ψ(4)(fj)〉q可呈现出任意偶数次的广义非线性等幂次2p(p=1,2,…)次方Y压缩效应;光场经典强度的空间分布函数|fj(xj,yj,zj)|2(j=1,2,…,q),对态|Ψ(4)(fj)〉q的等幂偶次Y压缩效应的压缩程度、压缩深度和压缩幅度等产生直接影响。It is constructed that the four-states superposition multimode functional superposition state light-field｜Ψ(4)(f_j)〉_q composed of the multimode functional coherent state｜｛f_j(x_j,y_j,z_j)｝〉_q,the contrary state｜｛-f_j(x_j,y_j,z_j)｝〉_q of the multimode functional coherent state motioned above,the multimode complex conjugate functional coherent state｜｛f_j(x_j,y_j,z_j)｝〉_q,and the contrary state ｜｛-f_j(x_j,y_j,z_j)｝〉_q of the multimode complex conjugate functional coherent state according to the superposition principle of quantum state in quantum mechanics.The characteristics of generalized nonlinear equal-power even-number-power Y-squeezing of the state ｜Ψ(4)(f_j)〉_q is studied first ly in detail by utilizing the multimode squeezed state theory established by YANG Zhi-yong and HOU Xun in recent years.It is shown that under some certain and fixed conditions,the state ｜Ψ(4)(f_j)〉_qcan present the effect of any even-number-power generalized nonlinear equal-power 2p-th-power Y-squeezing(here,p=1,2,…): And the spatial distribution function ｜f_j(x_j,y_j,z_j)｜2 (here,j=1,2,…,q;and q stand for the sum-number of the cavity-modes) of the classical intensity of the light-field has a direct influence upon the squeezed degree,the squeezed depth,and the squeezed amplitude of generalized nonlinear equal-power 2 p-th-power Y-squeezing of the state ｜Ψ(4)(f_j)〉_q.

关 键 词：泛函 相干态 叠加态 压缩效应 光场 共轭 多模压缩态理论 幅度 非线性 广义 

分 类 号：TN929.53[电子电信—通信与信息系统] O431.2[电子电信—信息与通信工程]