光场诱导的原子激光的量子相干性  

Quantum Coherence Properties of Atom Laser Induced by Light Field

作　　者：孔凡志[1] 周明[1] 黄春佳[1] 

机构地区：[1]长沙理工大学物理与电子科学学院,湖南长沙410076

出　　处：《光学学报》2008年第7期1395-1399,共5页Acta Optica Sinica

摘　　要：基于全量子理论,分别研究了几种重要的光场作用下,从原子玻色-爱因斯坦凝聚(BEC)体耦合输出的原子激光的量子相干特性。结果表明,粒子数态光场诱导的原子激光总是反聚束的,相干态光场诱导的原子激光是任意阶相干的,而压缩相干态光场诱导的原子激光总是聚束的。表明用光场诱导产生的原子激光具有与初始光场完全相同的量子相干性质。The quantum coherence properties of atom laser induced from atomic Bose-Einstein condensation （BEC） interacting with several sorts of important light fields are studied by quantum theory. The results show that the atom lasers induced by light field in Fock state, coherent state, and squeezing coherent state are always anti-bunching, the nth-order coherent, and bunching, respectively. These results indicate that the quantum coherence properties of atom laser are completely identical to that of the initial light field interacting with the atomic BEC.

关 键 词：量子光学 原子激光 玻色-爱因斯坦凝聚 相干度 

分 类 号：O431.2[机械工程—光学工程]