由奇、偶相干态组成的第Ⅰ种四态叠加多模叠加态光场的等阶N次方Y压缩

Equal—order Nth Power Y—squeezing of the First Four—state Superimposition Multimode Superimposition State Light Field Composed by Odd and Even Coherent States

根据多模辐射场的广义非线性等阶高阶压缩理论 ,对由一个多模奇相干态与一个多模偶相干态光场组成的四态叠加多模叠加态光场 |Ψ (4)o,e, 〉q 的等价 N次方 Y压缩特性进行了详细研究 .结果表明 :1)当压缩阶数 N为偶数时 ,态 |Ψ (4)o,e, 〉q恒处于等阶 N— Y最小测不准态 ;2 )当 N为奇数时 ,态 |Ψ (4)o,e, 〉q 在一定条件下呈现等阶 N次方 Y压缩、“半相干态”、“半相干—半压缩”及“完全等阶 N次方 Y压缩”效应 .

The properties of equal order Nth Power Y—squeezing of four—state superimposition multimode superimposition state light field ｜Ψ (4) o,e ,Ⅰ〉 q composed by a mutimode odd coherent state and a multimode even coherent state light field,by using generalized nonlinear equal order higher order squeezing theory of multimode radiation field.It is found:1)when squeezing order N is an even number,state ｜Ψ (4) o,e ,Ⅰ〉 q always presents equal order N—Y minimum uncertainty state;2)when N is an odd number state ｜Ψ (4) o,e ,Ⅰ〉 q may presents,under certain conditions, equal order Nth power Y—squeezing“half coherent”,“half coherent—squazing”and “complete equal order Nth Power Y—squeezing” effect.