中国物理B ›› 2004, Vol. 13 ›› Issue (2): 173-177.doi: 10.1088/1009-1963/13/2/009

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Memory-based quantum repeater in quantum information communication

伍祥生   

  1. Department of Information Technology, Hunan Normal University, Changsha 410081, China
  • 收稿日期:2003-07-16 修回日期:2003-08-18 出版日期:2004-02-06 发布日期:2005-07-06
  • 基金资助:
    Project supported by the China Scholarship Council (Grant No 2001-3048).

Memory-based quantum repeater in quantum information communication

Wu Xiang-Sheng (伍祥生)   

  1. Department of Information Technology, Hunan Normal University, Changsha 410081, China
  • Received:2003-07-16 Revised:2003-08-18 Online:2004-02-06 Published:2005-07-06
  • Supported by:
    Project supported by the China Scholarship Council (Grant No 2001-3048).

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摘要： This paper studies the quantum repeater in quantum information communication. We propose to introduce the photon buffer mechanism for storing photons, which uses fibre delay loops as photon memories and a programmable 1×N switcher for distributing photon delay time. Meanwhile, we also consider entanglement purification and entanglement swapping restoration at an entanglement purification or entanglement swapping failure and introduce a protection link mechanism that allows the photonic quantum repeater of a broken connection to initiate a connection restoration process.

关键词: quantum repeater, photon buffer, quantum information communication

Abstract: This paper studies the quantum repeater in quantum information communication. We propose to introduce the photon buffer mechanism for storing photons, which uses fibre delay loops as photon memories and a programmable 1×N switcher for distributing photon delay time. Meanwhile, we also consider entanglement purification and entanglement swapping restoration at an entanglement purification or entanglement swapping failure and introduce a protection link mechanism that allows the photonic quantum repeater of a broken connection to initiate a connection restoration process.

Key words: quantum repeater, photon buffer, quantum information communication

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
42.79.Sz (Optical communication systems, multiplexers, and demultiplexers?) 03.67.Hk (Quantum communication) 03.67.Lx (Quantum computation architectures and implementations)