利用纠缠交换制备最大纠缠态  

Generation of Maximally Entangled States Via Entanglement Swapping

作　　者：林秀[1] 李洪才[1] 杨榕灿[1] 黄志平[1] 

机构地区：[1]福建师范大学物理与光电信息科技学院,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2007年第5期36-39,共4页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(10574022);福建省自然科学基金资助项目(Z0512006)

摘　　要：基于腔QED技术提出利用纠缠交换制备光子-光子和原子-光子最大纠缠态的简便方案.在制备光子-光子最大纠缠态方案中,腔只是被虚拟激发,原子和腔之间没有信息转换,大大降低了对腔品质的要求.在利用双光子共振相互作用制备原子-光子最大纠缠态方案中,只要对单原子的态进行测量,而不需要联合Bell基测量.A relatively simple scheme for generating maximally entangled photon-photon and atom-photon states via entanglement swapping using techniques of cavity QED is proposed. The scheme of preparing the maximally entangled photon-photon state does not require the transfer of quantum information between the atoms and cavity. In the scheme the cavity is only virtually excited and thus the requirement on the quality factor of the cavity is greatly loosened. The scheme of preparing the maximally entangled atom-photon state based on the two-photon Jaynes-Cummings model only requires detecting the state of the single atom rather than a joint-Bell measurement.

关 键 词：量子纠缠态 纠缠交换 腔QED 

分 类 号：O431[机械工程—光学工程]