强度不等的非对称叠加态的等幂次和压缩  

The Property of Generalized Nonlinear Equal-power Sum in Unequalled-intensity Unsymmetrical Superposition State

作　　者：王菊霞[1] 

机构地区：[1]渭南师范学院量子光学与光子学研究室

出　　处：《苏州科技学院学报（自然科学版）》2003年第2期39-45,共7页Journal of Suzhou University of Science and Technology （Natural Science Edition）

基　　金：陕西省自然科学基金(2001SL04);陕西省教育厅专项科研基金(02JK191);渭南师范学院重点科研基金(02YKF006)。

摘　　要：文章构造了由多模虚共轭相干态│iZj(a) 〉q与多模虚共轭相干态的相反态│-iZj(b) 〉q线性叠加所组成的一种强度不等的非对称两态叠加多模叠加态光场│Ψ(ab)〉q。利用多模压缩态理论,研究了态│Ψ(ab)〉q的等幂次N次方H压缩特性。结果表明:(1)在Zj(a)≠Zj(b)的情况下,无论腔模总数q与压缩幂次N这两者之积q·N取奇还是取偶,态│Ψ(ab)〉q在一定条件下总可呈现出周期性变化的等幂次N次方H压缩效应。(2)在Zj(a)=Zj(b)且q·N取奇数的条件下,态│Ψ(ab)〉q将呈现出等幂次N次方H压缩简并现象。In this paper it is constructed a new type of unequalled-intensity unsymmetric multi-mode superposition state light field│Ψ (ab) 〉 q ,which is made of the linear superposition of macro scopically distinct two quantum states named the multi-mode imaginary conjugate coherent state│iZ j(a)  〉 q and the contrary state of multi -mode imaginary conjugate coherent state│iZ j(a)  〉 q respectively.By using the general theory of multi-mode squeezed state,the property of generalized nonlinear equal-power N-th power H-squeezing of the state│Ψ (ab) 〉 q mentioned above is studied firstly in detail.It is found that:(1).In the case of if Z j(a) ≠Z j(b) ,whether the q·N,the products of the cavity-mode number q and the squeezed power number N,is an even or odd number,the state│Ψ (ab) 〉 q can always presents equal-power N-th power H-squeezing effect.(2).When Z j(a) =Z j(b) and q·N is an odd number,the state│Ψ (ab) 〉 q can present the phenomenon of equal-power N-th power H-squeezing degenerate.

关 键 词：非对称两态叠加 多模叠加态光场 等幂次N次方H压缩 等幂次N次方H压缩简并 等幂次N-H最小测不准态 

分 类 号：O431[机械工程—光学工程]