双模光场光子数叠加态的压缩性质及量子统计性质  

Squeezing and Quantum Statistical Property in Two-mode Superposition States

作　　者：穆轶[1] 侯邦品[2] 余万伦[2] 

机构地区：[1]四川师范大学物理系,四川成都610066 [2]成都信息工程学院,四川成都610041

出　　处：《四川师范大学学报（自然科学版）》2003年第5期501-504,共4页Journal of Sichuan Normal University（Natural Science）

摘　　要：在单模光子数叠加态的研究基础上,进一步考虑了双模光子数叠加态情况.研究了双模光子数叠加态的压缩性质和量子统计性质,讨论了叠加态中粒子数、粒子数差、叠加态系数及叠加相位差对压缩性质及量子统计性质的影响,并将其结果与单模叠加态进行了比较.研究表明:双模单光子叠加态和双模双光子叠加态均存在和压缩,但只有双模单光子叠加态存在一般压缩.On the basis of singlemode superposition states, we study further the twomode superposition stats. The squeezing and quantum statistical properties in different twomode superposition states have been studied. The influences of the number photon, number difference, coefficients in the states and their relative phase on these nonclassical properties have been discussed. Finally, the squeezing in the twomode superposition states is compared with that in the singlemode ones. The results indicate that both in twomode singlephoton and twomode twophoton superposition states exists sum squeezing, however, only twomode singlephoton superposition states have normal squeezing.

关 键 词：双模光场 双模叠加态 一般压缩 和压缩 CAUCHY-SCHWARTZ不等式 

分 类 号：O431.2[机械工程—光学工程]