基于腔QED的原子纠缠态的制备过程  

Preparation of Atom Entangled States Based on Cavity QED

作　　者：苏晓琴[1] 肖云峰[2] 聂合贤[1] 王金来[1] 辛俊丽[1] 

机构地区：[1]运城学院物理与电子工程系,山西运城044000 [2]北京大学物理学院,北京100871

出　　处：《湘潭大学自然科学学报》2009年第3期38-42,共5页Natural Science Journal of Xiangtan University

基　　金：山西省高校科技研究开发项目(200613044)

摘　　要：为了制备量子纠缠态这种有用的量子信息"资源",在共振相互作用的腔量子电动力学技术方案的基础上,讨论了一种原子纠缠态的制备过程.提出了制备最大的纠缠态——GHZ态及非最大纠缠态——W态的方案.两种态的最大区别是:GHZ态的任意两粒子是可分态,多粒子才是纠缠态;而W态的任意两个粒子都是纠缠态,则对于W态的多粒子来说,即使丢失其中一个或多个粒子,剩余的两粒子仍然保持纠缠.该过程有望用现在的腔量子电动力学实验技术实现.For the sake of making this kind of useful quantum information ＂resource＂ of quantum entanglement. Here we propose a new prepare process on the foundation of the cavity quantum elecrrodynamics technique project of the resonance interaction, put forward a kind of making process that atom entangled state. Made to prepare two typical quantum entangled states in cavity QED： GHZ and W states of atoms, which belong to inequivalent classes of entangled states. GHZ state is maximally entangled state, while W states are non-maximally entangled states. They hold many interesting applications in quantum information processing and high-precision measurements. Therefore it is expected to be implemented with the current cavity QED experimental technology.

关 键 词：量子信息 腔QED 纠缠态 GHZ态 W态 

分 类 号：O431.2[机械工程—光学工程]