中国物理B ›› 2008, Vol. 17 ›› Issue (2): 462-466.doi: 10.1088/1674-1056/17/2/020

• GENERAL • 上一篇    下一篇

Scheme for splitting quantum information via W states in cavity QED systems

于希梅1, 顾永建1, 马丽珍1, 周邦安2   

  1. (1)Department of Physics, Ocean University of China, Qingdao 266100, China; (2)Weifang Education TV, Weifang 261041, China
  • 收稿日期:2007-07-06 修回日期:2007-07-09 出版日期:2008-02-20 发布日期:2008-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60677044) and the Funds for Introduced Talent of Ocean University of China.

Scheme for splitting quantum information via W states in cavity QED systems

Yu Xi-Mei(于希梅)a), Gu Yong-Jian(顾永建)a)†, Ma Li-Zhen(马丽珍)a), and Zhou Bang-An(周邦安)b)   

  1. a Department of Physics, Ocean University of China, Qingdao 266100, China; b Weifang Education TV, Weifang 261041, China
  • Received:2007-07-06 Revised:2007-07-09 Online:2008-02-20 Published:2008-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60677044) and the Funds for Introduced Talent of Ocean University of China.

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摘要： Assisted by multipartite entanglement, Quantum information may be split so that the original qubit can be reconstructed if and only if the recipients cooperate. This paper proposes an experimentally feasible scheme for splitting quantum information via W-type entangled states in cavity QED systems, where three-level Rydberg atoms interact with nonresonant cavities. Since W-type states are used as the quantum channel and the cavities are only virtually excited, the scheme is easy to implement and robust against decoherence, and the dependence on the quality factor of the cavities is greatly reduced.

Abstract: Assisted by multipartite entanglement, Quantum information may be split so that the original qubit can be reconstructed if and only if the recipients cooperate. This paper proposes an experimentally feasible scheme for splitting quantum information via W-type entangled states in cavity QED systems, where three-level Rydberg atoms interact with nonresonant cavities. Since W-type states are used as the quantum channel and the cavities are only virtually excited, the scheme is easy to implement and robust against decoherence, and the dependence on the quality factor of the cavities is greatly reduced.

Key words: splitting quantum information, W-type states, cavity QED

中图分类号:  (Cavity quantum electrodynamics; micromasers)

  • 42.50.Pq
03.65.Ud (Entanglement and quantum nonlocality) 03.67.Mn (Entanglement measures, witnesses, and other characterizations) 03.67.Lx (Quantum computation architectures and implementations)