摘要
引入正交偶相干态的概念，将计算过程转换成相干态的基本计算，得出光子湮灭算符ｍ次幂ａｍ的实部算符Ｘｍ和虚部算符Ｙｍ在正交偶相干态下的不确定关系和量子起伏规律。对ｍ取值按ｍ＝４ｋ（ｋ＝１，２，３，…），ｍ＝４ｋ＋１（ｋ＝０，１，２，…），ｍ＝４ｋ＋２（ｋ＝０，１，２，…）和ｍ＝４ｋ＋３（ｋ＝０，１，２，…）等４种情况进行了较为详细的计算和讨论，分别得出了在这４种情况下正交偶相干态的ｍ阶压缩特性。结果表明，正交偶相干态仅存在ｍ＝４ｋ＋２阶压缩。
In this paper, the concept of orthogonal-even coherent states is introduced, and through transforming its calculation to that of coherent state, the uncertain relation and quantum fluctuation law of the real part operator X m and the imaginalry part Y m of the mth-power of photon annihilation operator in this states are obtained. For every possible value of m, mth-order squeezing properties in orthogonal-even coherent states are discussed in detail, and general result was gained at last that there is only mth-order squeezing of orthogonal component X m or Y m when m=4k+2 in this states.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1998年第6期53-56,共4页
Journal of Northeast Forestry University
基金
黑龙江省自然科学基金
关键词
正交偶相干态
m阶压缩特性
量子起伏
Orthogonal coherent states
mth-order squeezing properties
Quantum fluctuation
