基于原子与腔场谐振相互作用制备原子GHZ态(英文)  

Generation of GHZ State Based on Interaction between Atoms and Cavity Field

作　　者：张登玉[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：《衡阳师范学院学报》2011年第6期41-43,共3页Journal of Hengyang Normal University

基　　金：The Science and Technology Research Foundation of Hunan Province of China(2010FJ4120);Key Scientific Research Fund of Hunan Provincial Education Department of China(09A013);Natural Science Foundation of Hunan Province(11JJ6063)

摘　　要：提出一种利用原子与腔场谐振相互作用制备原子GHZ态的方案。在此方案中,初始时腔场处于真空态,将制备在高能级的三个两能级原子依次注入腔场中发生单光子谐振作用,最后一个制备在低能级的两能级原子注入腔场发生三光子谐振作用。通过对腔场的测量可得到四原子GHZ态。利用该方法原则上可推广得到n个原子GHZ态。A simple scheme is presented for generating n-atom GHZ state with resonant interaction between two-lev- el atoms and a single-mode cavity field. In the proposed protocol, the cavity initially prepared in the vacuum state, it is injected three two-level atoms initially prepared in the excited state, the last two-level atom prepared in the ground state are injected into cavity with 3-photon resonant interaction. The detection of the cavity can collapse the atoms to the desired 4-atom GHZ state. The ideas can also be utilized for realizing n-atom GHZ state.

关 键 词：量子信息 两能级原子 单模腔场 GHZ态 

分 类 号：O431.2[机械工程—光学工程]