期刊论文

Huang, C.(hcjcsust@126.com)

中文

光学学报

0253-2239

2009

29

4

1096-1100

10.3788/AOS20092904.1096

本校为第一且通讯机构

运用全量子理论, 研究了单模压缩相干态光场与Ξ型三能级原子玻色-爱因斯坦凝聚体(BEC)相互作用系统中光场的压缩特性。结果表明：光场在与原子BEC相互作用过程中呈现周期性压缩, BEC原子能级的初始占据率对光场的压缩特性具有重要影响, 光场压缩的振荡周期与光场圆频率有关。当初始时刻原子全部处于基态时, 光场压缩呈现规则的周期性振荡。而当初始时刻激发态上有原子占据时, 光场压缩的时间演化曲线产生明显的畸变, 且这种畸变随初始时刻激发态原子占据率的增大而增大。激发态原子占据率还对光场的最大压缩深度有一定的影响, 激发态原子占据率较大时, 光场的最大压缩深度也较大。

The squeezing properties of the single-mode squeezing coherent light interacting with a three-level Ξ-scheme atomic Bose-Einstein condensate (BEC) are studied by means of quantum theory. The results show that the fluctuation of the light field can be squeezed periodically. The initial occupancy of the BEC atomic levels has great influence on the squeezing properties of light and the period of oscillation of the squeezing is relating to the circle frequency of the light. If all the BEC atoms are in the ground state at the initial moment, the sq...