中国物理B ›› 2007, Vol. 16 ›› Issue (10): 2880-2887.doi: 10.1088/1009-1963/16/10/009

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Controlled teleportation of multi-qudit quantum information

詹孝贵, 李红梅, 季 花, 曾浩生   

  1. Department of Physics, Hunan Normal University, Changsha { 410081, China
  • 收稿日期:2007-01-27 修回日期:2007-03-06 出版日期:2007-10-08 发布日期:2007-10-08
  • 基金资助:
    Project supported by the Scientific Research Fund of Hunan Provincial Education Bureau (Grant No~05B041), the Foundation for Key Program of Ministry of Education, China (Grant No~206103), the Science Foundation for Post Doctorate Research from the Mini

Controlled teleportation of multi-qudit quantum information

Zhan Xiao-Gui(詹孝贵), Li Hong-Mei(李红梅), Ji Hua(季花), and Zeng Hao-Sheng(曾浩生)†   

  1. Department of Physics, Hunan Normal University, Changsha 410081, China
  • Received:2007-01-27 Revised:2007-03-06 Online:2007-10-08 Published:2007-10-08
  • Supported by:
    Project supported by the Scientific Research Fund of Hunan Provincial Education Bureau (Grant No~05B041), the Foundation for Key Program of Ministry of Education, China (Grant No~206103), the Science Foundation for Post Doctorate Research from the Mini

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摘要： We propose a scheme for realizing a controlled teleportation of random $M$-qudit quantum information under the control of $N$ agents. The resource consumption includes a prearranged $(2M + N + 1)$-qudit entangled quantum channel and $(2M + N + 1)\log _2 d$-bit classical communication. And the quantum operations used in the teleportation process are a series of generalized Bell-state measurements, single-qudit measurements, qudit $H$-gates, qudit-Pauli gates and qudit phase gates. It is shown that the original state can be restored by the receiver only on condition that all the agents work in collaboration with each others. If one agent does not cooperate with the other, the original state cannot be fully recovered.

关键词: qudit, controlled teleportation, agent

Abstract: We propose a scheme for realizing a controlled teleportation of random $M$-qudit quantum information under the control of $N$ agents. The resource consumption includes a prearranged $(2M + N + 1)$-qudit entangled quantum channel and $(2M + N + 1)\log _2 d$-bit classical communication. And the quantum operations used in the teleportation process are a series of generalized Bell-state measurements, single-qudit measurements, qudit $H$-gates, qudit-Pauli gates and qudit phase gates. It is shown that the original state can be restored by the receiver only on condition that all the agents work in collaboration with each others. If one agent does not cooperate with the other, the original state cannot be fully recovered.

Key words: qudit, controlled teleportation, agent

中图分类号:  (Quantum computation architectures and implementations)

  • 03.67.Lx
03.65.Ud (Entanglement and quantum nonlocality) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)