摘要
根据Ｈｏｎｇ等人的高阶压缩定义，研究了ａｋ本征态（ｋ≥２）的高阶压缩特性。结果表明，当ｋ为偶数时，不存在低于ｋ阶的压缩，但可以存在ｋ阶以上的压缩（包括ｋ阶压缩），特别是当ｋ为４的整数倍时，两个正交分量总是同时出现ｋ阶以上的压缩；当ｋ为奇数时，至少可以肯定不存在６ｋ阶以下的压缩。
? We study higherorder squeezing properties of orthogonal eigenstates of the operator k where k is the annihilation operator of quantum radiation field, and k is a positive integer. It shows that for the orthogonal eigenstates of operator k there is no less than korder squeezing when k is an even number, but exist larger than kth order ( including kth order ) higher order squeezing with repect to the quadrature components of quantum radiation field. Especially, we find that the two quadrature components can simultaneously exhibit larger than kth order squeezing when k is an integer times of 4. When k is an odd number we can at least conclude that there is no less than 6k order squeezing.
出处
《量子光学学报》
CSCD
1998年第2期69-77,共9页
Journal of Quantum Optics
基金
国家自然科学基金
湖南省自然科学基金
