真空场注入非对称五态叠加多模泛函叠加态的高次振幅压缩(英文)  

Equal-power higher-power amplitude squeezing of vacuum state immiting asymmetrical five-states superposition multimode functional superposition state

作　　者：刘宝盈[1] 杨志勇[2] 白晋涛[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,西安710071

出　　处：《原子与分子物理学报》2006年第5期855-860,共6页Journal of Atomic and Molecular Physics

基　　金：陕西省科技攻关资助项目(2002K05-G9);陕西省教育厅专项科研基金资助项目(03JK212,04JK125)

摘　　要：构造了由多模真空态、多模泛函相干态、多模泛函相干态的相反态、多模复共轭泛函相干态和多模复共轭泛函相干态的相反态这五个宏观上完全可分辩的量子态线性叠加所构成的强度不等的非对称五态叠加多模泛函叠加态光场|Ψ(v5a)s〉q.利用多模压缩态理论,首次研究了态|Ψ(v5a)s〉q的广义非线性等幂奇数次高次振幅压缩特性.结果发现:在一定的条件下,态|Ψ(v5a)s〉q可呈现任意次的广义非线性等幂次高次振幅压缩效应,其压缩程度、压缩深度和压缩幅度与压缩次数、腔模总数、态间叠加几率幅、各模光场的经典强度以及经典初始相位的空间分布函数等强烈地非线性相关联;特别是,在特定条件下,真空场的注入可以提高压缩程度.It is constructed in this paper that the five-states superposition multimode functional superposition state light-field ｜Ψ~^((5))__(vas)〉_q composed of multimode vacuum state,the multimode functional coherent state and its contrary state,the multimode complex conjugate functional coherent state and its contrary state according to the superposition principle of quantum state in quantum mechanics by unequal intensity.The properties of generalized nonlinear equal-power higher-power amplitude squeezing of the state(｜Ψ~^((5))__(vas)〉_q) is studied firstly in detail by utilizing the multimode squeezed state theory.It is shown that under some certain and fixed conditions, the state(｜Ψ~^((5))__(vas)〉_q) can present the effect of generalized nonlinear equal-power higher-power amplitude squeezing;And the squeezed degree,the squeezed depth,and the squeezed amplitude are intensively nonlinear related to the cavity mode number,the squeezed number,the probability among the states,the spatial distribution function of the classical intensity and classical amplitude each mode of the state(｜Ψ~^((5))__(vas)〉_q).Especially,the squeezed degree is increased with the immiting of vacuum state light-field under some special conditions.

关 键 词：多模压缩态 多模叠加态 多模真空态 多模泛函相干态 振幅压缩 

分 类 号：O431.2[机械工程—光学工程]