耦合原子与腔场多光子相互作用过程中的量子信息传递  

Quantum Information Transfer in the Process of Coupled Atoms Interacting with Cavity Fields

作　　者：王菊霞[1] 杨志勇[1] 安毓英[1] 

机构地区：[1]西安电子科技大学技术物理学院

出　　处：《高能物理与核物理》2007年第2期204-208,共5页High Energy Physics and Nuclear Physics

基　　金：陕西省自然科学基金项目(2001S104;2004A19);陕西省教育厅中青年培养计划项目(02JK191);渭南师院重点科研基金项目(06YKF012)资助~~

摘　　要：建立了“多耦合原子-腔”系统的多光子相互作用模型．利用腔量子电动力学理论,研究了原子与腔场相互作用过程中量子信息传递的特性,分析了原子间耦合作用对量子信息传递的影响．结果表明：在一定的相互作用时间内,量子信息可以在腔场与原子间可逆传递或保持,原子间的偶极作用导致量子纠缠信息非完全传递和非完全保持．A interaction model of multi-photon process in the ＂multi-coupled-atom-cavity＂ system is constructed. In terms of the cavity quantum electrodynamics, the properties of quantum information transfer in the process of coupled atoms interacting with cavity fields are studied, and the effect of the coupling between atoms on the quantum information transfer is analyzed. It is found that quantum information can be transferred back and forth or be preserved between the cavity fields and atoms in certain time period. The dipole interaction between atoms leads to the quantum entanglement information partially transferred and partially preserved.

关 键 词：腔量子电动力学 耦合原子 多光子相互作用 多原子-腔-场系统 量子信息传递 

分 类 号：O431.2[机械工程—光学工程]