由奇、偶相干态组成的第Ⅱ种四态叠加多模叠加态光场的等阶N次方H压缩特性  

THE PROPERTIES OF THE EQUAL-ORDER Nth POWER H-SQUEEZING OF THE SECOND FOUR-STATE SUPERIMPOSITION MULTI-MODE SUPERIMPOSITION STATE LIGHT FIELD COMPOSED BY ODD AND EVEN-COHERENT STATE

作　　者：薛琳娜[1] 许定国[2] 杨志勇[3,4] 刘生春[1] 

机构地区：[1]延安大学物理系,延安716000 [2]商洛师专量子光学与量子信息研究所,商洛师专物理系,商州726000 [3]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,西安710069 [4]西北大学现代物理研究所

出　　处：《光子学报》2001年第10期1188-1193,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 (0 0 JK1 1 5 );商洛师范专科学校科学基金资助项目

摘　　要：利用多模压缩态理论 ,详细研究了由奇、偶相干态组成的第 种四态叠加多模叠加态光场 |ψ(4 )o,e 〉q的等阶 N次方 H压缩特性 .结果发现 :1 )当腔模 (纵模 )总数 q与压缩阶数 N之积 q N为偶数时 ,态 |ψ(4 )o,e 〉q恒处于等阶 N -H最小测不准态 ;2 )当 q N为奇数时 ,在其它参量的不同组合取定值的条件下 ,态 |ψ(4 )o,e 〉q可分别呈现以下几种效应 :1某一正交分量呈现等阶 N次方 H压缩效应 ,另一正交分量则既不呈现出等阶 N次方 H压缩效应也不处于等阶 N-H最小测不准态 ;2呈现出“半相干态”效应 ;3处于等阶 N-H最小测不准态 ;3 )经与文献 1 7比较发现本文论及的态 |ψ(4 )o,e 〉q与态 |ψ(4 )o,e 〉q之间存在着“压缩简并”现象 .With the application of the theory of multimode squeezing,the properties of the equal order Nth power H squeezing of the second four state superimposition multimode superimposition state light field composed by odd and even coherent state are studied in detail.It is found:1)when the multiplication of cavity mode (vertical) sum q and squeezing order N,qN is an even number,state |ψ (4) o,e Ⅱ> q always stays in equal order N H minimum uncertainty state;2)when qN is an odd mumber,and the combination of other parameter is constant value,state |ψ (4) o,e ,Ⅱ> q may appear as the following:①One quadrature component appears as equal order Nth power H squeezing action,the other appears neither as equal order Nth power H squeezing action nor as equal order minimum state;②Appear as 'half coherent' action;③Appear as equal order N H minimum uncertainty state;3)Compared with Reference 17,it is found that there exists 'squeezing degenerate' between the state |ψ (4) o,e ,Ⅱ> q discussed in this paper and state |ψ (4) o,e ,Ⅰ> q

关 键 词：半相干态 压缩简并 等阶N次方H压缩 等阶N-H最小测不准态 四态叠加 多模叠加态光场 多模压缩态 量子光学 量子力学 

分 类 号：O431.2[机械工程—光学工程]