Atomic N00N state generation in distant cavities by virtual excitations

doi:10.1088/1674-1056/20/6/060302

中国物理B ›› 2011, Vol. 20 ›› Issue (6): 60302-060302.doi: 10.1088/1674-1056/20/6/060302

Atomic N00N state generation in distant cavities by virtual excitations

李刚¹, 李杰¹, 张天才¹, 杨榕灿²

(1)State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China; (2)State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China;School of Physics and Opto-Electronics Technology, Fujian Normal University, Fuzhou 350007, China

收稿日期:2010-10-26 修回日期:2011-01-06 出版日期:2011-06-15 发布日期:2011-06-15
基金资助:
Project supported in part by the National Natural Science Foundation of China (Grant Nos. 10974125 and 60821004), the State Basic Key Research Program of China (Grant No. 2006CB921102), and the Science Foundation of the Educational Committee of Fujian Province, China (Grant No. JA09041).

Atomic N00N state generation in distant cavities by virtual excitations

Yang Rong-Can (杨榕灿)^ab, Li Gang (李刚)^a, Li Jie (李杰)^a, Zhang Tian-Cai (张天才)^a

^a State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan 030006, China; ^b School of Physics and Opto-Electronics Technology, Fujian Normal University, Fuzhou 350007, China

Received:2010-10-26 Revised:2011-01-06 Online:2011-06-15 Published:2011-06-15
Supported by:
Project supported in part by the National Natural Science Foundation of China (Grant Nos. 10974125 and 60821004), the State Basic Key Research Program of China (Grant No. 2006CB921102), and the Science Foundation of the Educational Committee of Fujian Province, China (Grant No. JA09041).

摘要/Abstract

摘要： A general scheme of generating N00N states of virtually-excited 2N atoms is proposed. The two cavities are fibre-connected with N atoms in each cavity. Although we focus on the case of N=2, the system can be extended to a few atoms with N>2. It is found that all 2N atoms can be entangled in the form of N00N states if the atoms in the first cavity are initially in the excited states and atoms in the second cavity are all in the ground states. The feasibility of the scheme is carefully discussed, it shows that the N00N state with a few atoms can be generated with good fidelity and the scheme is feasible in experiment.

关键词: N00N states, optical cavity, optical fibre, virtual excitations

Abstract: A general scheme of generating N00N states of virtually-excited 2N atoms is proposed. The two cavities are fibre-connected with N atoms in each cavity. Although we focus on the case of N=2, the system can be extended to a few atoms with N>2. It is found that all 2N atoms can be entangled in the form of N00N states if the atoms in the first cavity are initially in the excited states and atoms in the second cavity are all in the ground states. The feasibility of the scheme is carefully discussed, it shows that the N00N state with a few atoms can be generated with good fidelity and the scheme is feasible in experiment.

Key words: N00N states, optical cavity, optical fibre, virtual excitations

中图分类号: (Entanglement and quantum nonlocality)

03.65.Ud

03.67.Mn (Entanglement measures, witnesses, and other characterizations)

杨榕灿, 李刚, 李杰, 张天才. Atomic N00N state generation in distant cavities by virtual excitations[J]. 中国物理B, 2011, 20(6): 60302-060302.

Yang Rong-Can (杨榕灿), Li Gang (李刚), Li Jie (李杰), Zhang Tian-Cai (张天才). Atomic N00N state generation in distant cavities by virtual excitations[J]. Chin. Phys. B, 2011, 20(6): 60302-060302.

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Atomic N00N state generation in distant cavities by virtual excitations

Atomic N00N state generation in distant cavities by virtual excitations

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