摘要
根据量子力学的线性叠加原理 ,构造了由多模偶相干态与多模虚偶相干态组成的第 种四态叠加多模叠加态光场态 |Ψ(4)e , 〉q的等阶 N次方 Y压缩特性 .结果发现 :1 )当压缩阶数 N=4m,( m=1 ,2 ,3 ,… )时 ,态 |Ψ(4)e , 〉q 恒处于等阶数 N-Y最小测不准态 ;2 )当压缩阶数 N =4m′+2 ,( m′=0 ,1 ,2 ,… )时 ,在 (θ1-θ2 ) ,q,Rj,r1,r2 等取不同的组合定值下 ,态|Ψ(4)e , 〉q可分别呈现出等阶 N次方 Y压缩效应与“半相干态”效应 ;3 )当压缩阶数 N为奇数时 ,在 (θ1-θ2 ) ,q,Rj,r1,r2 等取不同的组合定值下 ,态 |Ψ(4)e , 〉q 可呈现出等阶 N次方
According to the linear superimposition principle in quantum mechanics,the third four state superimposition multimode superimposition light field |Ψ (4) e,Ⅲ> q composed by two different even coherent states |Ψ (2) ,e> q and |Ψ (2) i,e> q.Based on the multimode squeezed state theory,the properties of equal N th power Y Squeezing of the state |Ψ (4) e,Ⅲ> q is studied ,and it is found that:1) When N=4m(m=1,2,3...),the state |Ψ (4) e,Ⅲ> q always stays in equal order N Y minimum uncertainty state;2) When N=4m′+2(m′=0,1,2,...),(θ 1-θ 2),q,R j,r 1,r 2 and φ j take different fixed value,state |Ψ (4) e,Ⅲ> q present the effect:equal order N th Power Y squeezing effect and 'half coherent state' effect.3) When N is odd ,(θ 1 θ 2),q,R j,r 1,r 2and φ j take different fixed value,state |Ψ (4) e,Ⅲ> q presents the equal order N th power Y squeezing effect.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2002年第4期412-420,共9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 )资助项目~~
关键词
多模偶相干态
多模虚偶相干态
四态叠加
多模叠加态
等阶N-Y最小测不准态
等阶N次方Y压缩
半相干态
量子光学
光场
Multimode even coherent stat
Multi mode imaginary even coherent state
Four state superim position
Multimode superimposition state light field
Equal order N Y minimum uncertainty state
Equal order N th power Y squeezing
Half coherent state