中国物理B ›› 2007, Vol. 16 ›› Issue (5): 1209-1214.doi: 10.1088/1009-1963/16/5/006

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Remote preparation of a Greenberger--Horne--Zeilinger state via a two-particle entangled state

林秀, 李洪才, 林秀敏, 李兴华, 杨榕灿   

  1. School of Physics and Optoelectronics, Fujian Normal University, Fuzhou 350007, China
  • 收稿日期:2005-11-22 修回日期:2006-11-17 出版日期:2007-05-20 发布日期:2007-05-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10574022), and the Fund of the Natural Science of Fujian Province, China (Grant No Z0512006).

Remote preparation of a Greenberger--Horne--Zeilinger state via a two-particle entangled state

Lin Xiu(林秀)†, Li Hong-Cai(李洪才), Lin Xiu-Min (林秀敏), Li Xing-Hua(李兴华), and Yang Rong-Can(杨榕灿)   

  1. School of Physics and Optoelectronics, Fujian Normal University, Fuzhou 350007, China
  • Received:2005-11-22 Revised:2006-11-17 Online:2007-05-20 Published:2007-05-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10574022), and the Fund of the Natural Science of Fujian Province, China (Grant No Z0512006).

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摘要： We present two schemes for realizing the remote preparation of a Greenberger--Horne--Zeilinger (GHZ) state. The first scheme is to remotely prepare a general N-particle GHZ state with two steps. One is to prepare a qubit state by using finite classical bits from sender to receiver via a two-particle entangled state, and the other is that the receiver introduces N - 1 additional particles and performs N - 1 controlled-not (C-Not) operations. The second scheme is to remotely prepare an N-atom GHZ state via a two-atom entangled state in cavity quantum electrodynamics (QED). The two schemes require only a two-particle entangled state used as a quantum channel, so we reduce the requirement for entanglement.

关键词: remote state preparation, two-particle entangled state, Greenberger--Horne--Zeilinger\\ \hspace*{1.9cm} (GHZ) state, controlled-not operation, cavity quantum electrodynamics (QED)

Abstract: We present two schemes for realizing the remote preparation of a Greenberger--Horne--Zeilinger (GHZ) state. The first scheme is to remotely prepare a general N-particle GHZ state with two steps. One is to prepare a qubit state by using finite classical bits from sender to receiver via a two-particle entangled state, and the other is that the receiver introduces N - 1 additional particles and performs N - 1 controlled-not (C-Not) operations. The second scheme is to remotely prepare an N-atom GHZ state via a two-atom entangled state in cavity quantum electrodynamics (QED). The two schemes require only a two-particle entangled state used as a quantum channel, so we reduce the requirement for entanglement.

Key words: remote state preparation, two-particle entangled state, Greenberger--Horne--Zeilinger (GHZ) state, controlled-not operation, cavity quantum electrodynamics (QED)

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.Mn (Entanglement measures, witnesses, and other characterizations) 42.50.Dv (Quantum state engineering and measurements) 42.50.Pq (Cavity quantum electrodynamics; micromasers)