双模压缩真空态与玻色-爱因斯坦凝聚相互作用系统中的量子纠缠

Quantum entanglement in system of two-mode squeezed vacuum state interacting with Bose-Einstein condensate

研究的系统为双模压缩真空态和玻色-爱因斯坦凝聚体相互作用体系,在双光子跃迁过程中,分别用量子约化熵和量子相对熵研究了该系统中的双模压缩真空态与凝聚体间的纠缠以及双模压缩真空态的模间纠缠,分析了光场初始压缩因子、原子间相互作用对场-凝聚体间纠缠和模间纠缠的影响。

The entanglement in the system which consists of two-mode squeezed vacuum state and Bose- Einstein condensate in two-photon process is investigated. The entanglement of field-atom and the entanglemeat between the two-mode field are investigated using the quantum reduced entropy and quantum relative entropy, respectively. The influences of the initial squeezed parameter of field and the interaction between atoms on the evolution of the entanglement of field-atom and one of two modes of field are discussed.