基于腔QED制备2n-模光子GHZ态(英文)  

Generation of 2n-mode photon GHZ states based on cavity quantum electrodynamics

作　　者：张登玉[1] 汪新文[1] 唐世清[1] 谢利军[1] 詹孝贵[1] 陈银花[1] 

机构地区：[1]衡阳师范学院物理与电子信息科学系,湖南衡阳421008

出　　处：《量子电子学报》2012年第5期591-596,共6页Chinese Journal of Quantum Electronics

基　　金：Project supported by the National Natural Science Foundation of China(11004050);the Science and Technology Research Foundation of Hunan Province,China(2010FJ4120);the Natural Science Foundation of Hunan Province, China(11JJ6063)

摘　　要：提出一种利用一个2n-能级原子与两个n-模腔相互作用制备2n-模光子GHZ态的方案。在此方案中,2n个量子比特编码在2n个腔模的0-和1-光子Fock态中。由于原子与腔场之间相互作用是共振的,因此耦合强度相对较大,这将缩短所需的相互作用时间,从而降低实验中退相干的影响。A simple scheme is presented for generating 2n-mode photon Greenberger-Horne-Zeilinger （GHZ） states with the interaction of a 2n-level atom with two n-mode cavities. In the proposed protocol, the 2n qubits are encoded in zero- and one-photon Fock states of 2n cavity modes. Because the interaction between the atom and cavity fields is resonant, the coupling strength can be relative strong. This will shorten the corresponding interaction time and thus reduce the effect of decoherence in experiment.

关 键 词：量子光学 多能级原子 多模腔 GHZ态 光子比特 

分 类 号：O431.2[机械工程—光学工程]