摘要
文章研究与玻色 -爱因斯坦凝聚体相互作用的量子光场的非经典特性。表明当光场初始处于相干态 ,原子初始处于数态时 ,量子光场在时间演化过程中表现出亚泊松光子统计。发现对任意的初始原子数态和初始光强度 ,量子光场的动力学都有不具有光场正交分量的二阶压缩 ,但在一定条件下 ,可以表现出高阶压缩。我们详细研究了量子光场的四阶压缩特性 ,给出了四阶压缩的条件。
In this paper,nonclassical effects of quantum lightfield interacting with Bose- Einstien condensate (BEC) are investigated when the quantum lightfield is initially in a coherentstate and the atomic field of the BEC is initially in a number state.It is shown that the quantum light field exhibits sub- Poinssonian photon statistics in the time evolution butthere is no second- order squeezing of the quadrture components of the light field in the wholedynamic evolution.Itisfound thatundersuitable conditions,thehight- ordersqueezing of the lightfield can occur.Concretely ,the fourth order squeezing of the lightfield iis studied in detail.
出处
《量子光学学报》
CSCD
2000年第1期29-35,共7页
Journal of Quantum Optics
基金
国家九五"攀登计划"预选项目课题
国家自然科学基金资助!(编号 :196 740 13)
