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

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