摘要
在低Q值腔内 ,原子相干态在一些特定时刻可以演化为原子薛定谔猫态 .讨论了在这种原子薛定谔猫态中原子角动量的涨落和高阶涨落 .根据不确定性原理 ,进一步研究了原子角动量的压缩和高阶压缩性质及其演化 .研究表明 ,原子薛定谔猫态可以被压缩到二阶和六阶 ,但不能被压缩到四阶 .当原子薛定谔猫态中被叠加的原子相干态数为无限多项时 ,其压缩特性与原子相干态相同 .
The atomic coherent states will evolve to the atomic Schrdinger cat states at some special times in a low Q acvity. The fluctuations and higher order fluctuations of angular momentum in these atomic Schrdinger cat states are discussed. According to the uncertainty principle, the squeezing and higher order squeezing for atomic angular momentum are investigated. It shows that the atomic Schrdinger cat states can be squeezed to second and sixth order, but cannot be squeezed to fourth order. The properties of squeezing of atomic Schrdinger cat states formed by superposing infinite terms of atomic coherent states are identical with those of atomic coherent states.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第2期337-344,共8页
Acta Physica Sinica
