【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.更多还原

【Abstract】 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.更多还原