第Ⅰ种非对称两态叠加多模叠加态光场的偶数阶等阶N次方Y压缩  

THE PROPERTIES OF EVEN NUMBER ORDER EQUAL-ORDER N-TH POWER Y-SQUEEZING IN THE FIRST KIND OF ASYMMETRICAL MULTIMODE SUPERPOSITION STATE LIGHT FIELD WITH THE SUPERPOSITION OF TWO QUANTUM STATES

作　　者：韩小卫[1,2] 杨志勇[1,3] 侯洵[1,4] 孙秀泉[5] 王菊霞[2] 薛红[1,2] 

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]渭南师范学院量子光学与光子学研究室 [3]西北大学现代物理研究所,西安710069 [4]中国科学院西安光学精密机械研究所,瞬态光学技术国家重点实验室,西安710068 [5]西北大学物理学系,西安710069

出　　处：《光子学报》2002年第2期135-140,共6页Acta Photonica Sinica

基　　金：陕西省自然科学基金 ( 2 0 0 0 SL1 0 );陕西省教育厅专项科研基金 (批准号 :99JK0 91 );西北大学科学基金( 99NW38)资助项目~~

摘　　要：本文利用多模压缩态理论 ,研究了第 种非对称两态叠加多模叠加态光场 |Ψ(ab) 〉q的偶数阶等阶 N次方 Y压缩特性 .结果发现 :在压缩阶数 N取偶数情况下 ,只要构成态 |Ψ(ab) 〉q的两个量子光场态的强度 (即平均光子数 )不相等 ,则当各模的初始相位φ(a)j 、φ(b)j ( j=1 ,2 ,3 ,… ,q)、态间的初始相位差 ( θ(b I)pq -θ(a R)nq )以及与上述的两个量子光场态相对应的各单模相干态光场的光子干涉项之和 qj =1[R(a)j R(b)j cos( φ(a)j -φ(b)j ) ]等满足一定条件时 ,态 |Ψ(ab) 〉q 可呈现出周期性变化的、任意偶数阶的等阶 N次方 Y压缩效应 .In the paper ,the properties of even-number equal-order N-th power Y-squeezing in the first kind of asymmetrical multimode superposition state light field |Ψ (ab) I> q with the superposition of two quantum states is studied in detail ,by utilizing the theory of multimode squeezed states .It is found that if the squeezed order number is an even number,and if the intensity (the average photon numbers)of the two quantum light field states which compose of the state |Ψ (ab) I> q are unequal,and if some certain conditions are satisfied respectively by the initial phase φ (a) j?φ (b) j of all mode,and by the initial phase difference(θ (bI) pq-θ (aR) nq) between the two components of the state |Ψ (ab) I> q ,and by the photon intervene term sum ∑qj=1[R (a) jR (b) jcos(φ (a) j-φ (b) j)[WTBZ] of each-mode coherent state light field,which is corresponding to the above-mentioned two quantum light field states ,the state|Ψ (ab) I> q display the effects of any even-number-order equal-order N-th power Y-squeezing,that changes periodcally .This result is entirely different from the result reported in current references .

关 键 词：非对称两态叠加 多模叠加态光场 偶数阶等阶N次方Y压缩 压缩简并 量子光学 

分 类 号：O431.2[机械工程—光学工程]