二能级原子玻色-爱因斯坦凝聚体与双模光场相互作用系统中原子激光的压缩性质  

Squeezing properties of atom laser from two-level atomic Bose-Einstein condensate interacting with two-mode light field

作　　者：李明[1] 陈翠玲[2] 

机构地区：[1]桂林理工大学理学院,桂林541004 [2]广西师范大学数学与统计学院,桂林541004

出　　处：《物理学报》2014年第4期99-104,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11364010);广西教育厅科研基金(批准号:200103YB058);桂林理工大学博士科研基金资助的课题~~

摘　　要：利用格子液体方法对二能级原子玻色-爱因斯坦凝聚体与双模光场相互作用系统的哈密顿量进行了改进,并且研究了系统中原子激光的压缩性质.结果表明:原子激光的两个正交分量均可被周期性压缩,其最大压缩深度主要依赖于光场初始压缩因子,而崩塌-回复振荡频率和量子Rabi振荡频率主要分别由光场与原子间的相互作用强度和光场圆频率决定.The Hamiltonian operator of a system of two-level atomic Bose-Einstein condensate interacting with two-mode squeezed coherent light field is improved in terms of the lattice-liquid model. The squeezing properties of atom laser in this system are studied. Results show that the two quadrature components of the atom laser can be squeezed periodically, and the maximum depth depends greatly on the initial squeezing factor of the light field. The collapse-revival oscillatory frequency of the atom laser and the quantum Rabi frequency are largely determined by the interaction intensity between the light field and the atoms and by the circle frequency of the light field, respectively.

关 键 词：玻色-爱因斯坦凝聚 二能级原子 双模压缩相干态光场 原子激光 

分 类 号：O431.2[机械工程—光学工程]