基于腔QED制备2n-光子GHZ态

J4 ›› 2012, Vol. 29 ›› Issue (5): 591-596.

基于腔QED制备2n-光子GHZ态

张登玉, 汪新文, 唐世清, 谢利军, 詹孝贵, 陈银花

衡阳师范学院物理与电子信息科学系, 湖南衡阳 421008

收稿日期:2011-10-24 修回日期:2012-09-02 出版日期:2012-09-28 发布日期:2012-09-02
通讯作者: 张登玉（1962-），湖南祁阳人，博士，教授，主要研究方向是量子光学和量子信息。 E-mail:dyzhang672@163.com
基金资助:
National Natural Science Foundation of China (Grant No. 11004050), the Scientific Research Fund of Hunan Provincial Education Department, China (09A013 and 10B013), the Natural Science Foudation of Hunan Province, China(11JJ6063), the Science and Technology of Hunan Province, China (2010FJ4120).

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

ZHANG Deng-yu, WANG Xin-wen, TANG Shi-qing, XIE Li-jun, ZHAN Xiao-gui, CHEN Yin-hua

Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang 421008, China

Received:2011-10-24 Revised:2012-09-02 Published:2012-09-28 Online:2012-09-02

摘要/Abstract

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。

关键词: 量子光学, 多能级原子, 多模腔, GHZ态, 光子比特

Abstract:

A simple scheme is presented for generating - mode photon Greenberger- Horne-Zeilinger (GHZ) states with the interaction of a -level atom with two - 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 which will shorten the corresponding interaction time and thus reduce the effect of decoherence in experiment.

Key words: quantum optics, multi-level atom, multi-mode cavity, GHZ state, photonic qubit

中图分类号:

O431.2

张登玉, 汪新文, 唐世清, 谢利军, 詹孝贵, 陈银花. 基于腔QED制备2n-光子GHZ态[J]. J4, 2012, 29(5): 591-596.

ZHANG Deng-yu, WANG Xin-wen, TANG Shi-qing, XIE Li-jun, ZHAN Xiao-gui, CHEN Yin-hua. Generation of 2n-photon GHZ states based on cavity quantum electrodynamics[J]. J4, 2012, 29(5): 591-596.

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