一种新型的多模叠加态光场的N_j次方Y压缩  

The effect of unequal-power N_j-th power Y-squeezing on a new type of multi-mode superimposition state light field with two state superimpositions

作　　者：薛红[1] 杨志勇[1] 侯洵[1] 

机构地区：[1]西北大学光子学与光子技术研究所/光电子技术省级重点开放实验室

出　　处：《西北大学学报（自然科学版）》2002年第3期251-254,共4页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省自然科学基金资助项目 (2 0 0 1SL0 4;2 0 0 0 SL10 );渭南师范学院科研基金资助项目(0 1YKS0 2 0 );西北大学科学基金资助项目 (99NW38)

摘　　要：利用多模压缩态理论 ,详细研究了一种新型的两态叠加多模叠加态光场 |Ψ( 2 )msc〉q的广义非线性不等幂次 Nj次方 Y压缩特性。结果发现 :当各模的压缩次数 Nj=2 p且 p =2 m +1 (m =0 ,1 ,2 ,… )时 ,如果各模的初始相位φj(j=1 ,2 ,3… ,q)、态间的初始相位差与多模相干态光场的总的平均光子数这两者之差 ,即 [(θ( R)np -θ( I)nq ) - ∑qj=1R2j]满足一定的取值条件 ,则态 |Ψ ( 2 )msc〉q 的第一和第二两个正交相位分量均可分别呈现出周期性变化的、偶数次的广义非线性不等幂次 Nj次方 Y压缩效应。By utilizing the theory of multi-mode squeezed states, the property is studied on the generalized nonlinear unequal-order N j -th power Y-squeezing on a new type of multi-mode superimposition state light field | Ψ (2) msc > q with distinguishable two quantum states. It is found that when squeezed orde N j=2p , no matter what p=2m+1(m=0,1,2,...) ,while the initial phases of corresponding mode φ j(j=1,2,3...,q) , the difference of initial phasas of states [θ (R) nq -θ (I) nq -∑[DD(]qj=1R 2 j] and the range of phonton interence term, etc., the first and the second quadrature component of state | Ψ (2) msc > q is a typical multi-mode nonclasical light field. And it can display unequal-order N j -thpower Y-squeezing effects that change periodicall under the other conditions. and the range of phonton interence term, etc., the first and the second quadrature component of state | Ψ (2) msc > q is a typical multi-mode nonclasical light field. And it can display unequal-order N j -thpower Y-squeezing effects that change periodicall under the other conditions.

关 键 词：两态叠加 多模参加态光场 广义非线性不等次幂Nj次方Y压缩 多模压缩态理论 量子光场 

分 类 号：O431.2[机械工程—光学工程]