中国物理B ›› 2011, Vol. 20 ›› Issue (5): 50308-050308.doi: 10.1088/1674-1056/20/5/050308

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Deterministic generation of Greenberger–Horne–Zeilinger and W states for three distant atoms via adiabatic passage

宋佩君1, 司留刚1, 杨晓雪1, 吕新友2   

  1. (1)School of Physics and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China; (2)School of Physics, Ludong University, Yantai 264025, Chinavs-2mm vs-1mm
  • 收稿日期:2010-06-08 修回日期:2011-01-10 出版日期:2011-05-15 发布日期:2011-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 90503010, 10874050, 10975054, 91021011 and 11005057), the National Basic Research Program of China (Grant No. 2005CB724508), and the Foundation from the Ministry of Educatio

Deterministic generation of Greenberger–Horne–Zeilinger and W states for three distant atoms via adiabatic passage

Song Pei-Jun (宋佩君)a, Lü Xin-You (吕新友)b, Si Liu-Gang (司留刚)a, Yang Xiao-Xue (杨晓雪)a   

  1. a School of Physics and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China; b School of Physics, Ludong University, Yantai 264025, China
  • Received:2010-06-08 Revised:2011-01-10 Online:2011-05-15 Published:2011-05-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 90503010, 10874050, 10975054, 91021011 and 11005057), the National Basic Research Program of China (Grant No. 2005CB724508), and the Foundation from the Ministry of Educatio of China (Grant No. 200804870051).

摘要: We propose two schemes for generating Greenberger–Horne–Zeilinger and W states of three distant atoms. In the present schemes, the atoms are individually trapped in three spatially separated optical cavities coupled by two optical fibres. Performing an adiabatic passage along dark states, the population of cavities and fibres excited is negligible under certain conditions. In addition, the spontaneous decay of atoms is also efficiently suppressed based on our proposals. Furthermore, the discussion about the entanglement fidelity is given and we point out that our schemes work robustly with small fluctuations of experimental parameters.

关键词: Greenberger–Horne–Zeilinger state, W state, adiabatic passage

Abstract: We propose two schemes for generating Greenberger–Horne–Zeilinger and W states of three distant atoms. In the present schemes, the atoms are individually trapped in three spatially separated optical cavities coupled by two optical fibres. Performing an adiabatic passage along dark states, the population of cavities and fibres excited is negligible under certain conditions. In addition, the spontaneous decay of atoms is also efficiently suppressed based on our proposals. Furthermore, the discussion about the entanglement fidelity is given and we point out that our schemes work robustly with small fluctuations of experimental parameters.

Key words: Greenberger–Horne–Zeilinger state, W state, adiabatic passage

中图分类号:  (Entanglement production and manipulation)

  • 03.67.Bg
42.50.Ex (Optical implementations of quantum information processing and transfer)