中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2194-2199.doi: 10.1088/1009-1963/16/8/007

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A controlled quantum teleportation scheme of an N-particle unknown state via three-particle W1 states

修晓明, 董莉, 高亚军, 迟锋   

  1. Department of Physics, Bohai University, Jinzhou 121000, China
  • 收稿日期:2006-10-13 修回日期:2006-11-23 出版日期:2007-08-20 发布日期:2007-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10647101).

A controlled quantum teleportation scheme of an N-particle unknown state via three-particle W1 states

Xiu Xiao-Ming(修晓明)†, Dong Li(董莉), Gao Ya-Jun(高亚军), and Chi Feng(迟锋)   

  1. Department of Physics, Bohai University, Jinzhou 121000, China
  • Received:2006-10-13 Revised:2006-11-23 Online:2007-08-20 Published:2007-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10647101).

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摘要： In this paper a controlled quantum teleportation scheme of an N-particle unknown state is proposed when N groups of three-particle W1 states are utilized as quantum channels. The quantum information of N-particle unknown state is transmitted from the sender to the recipient under the control of all supervisors. It can be realized with a certain probability. After the sender makes Bell-state measurements and the supervisors perform the computational basis measurements, the recipient will introduce auxiliary particles and carry out unitary transformations depending on classical information from the sender and the supervisors. Finally, the computational basis measurement will be performed by the recipient to confirm whether the teleportation succeeds or not. The successful completion of the scheme relies on all supervisors' cooperation. In addition, the fidelity and security of the scheme are discussed.

关键词: quantum information, controlled quantum teleportation, W1 state

Abstract: In this paper a controlled quantum teleportation scheme of an N-particle unknown state is proposed when N groups of three-particle W1 states are utilized as quantum channels. The quantum information of N-particle unknown state is transmitted from the sender to the recipient under the control of all supervisors. It can be realized with a certain probability. After the sender makes Bell-state measurements and the supervisors perform the computational basis measurements, the recipient will introduce auxiliary particles and carry out unitary transformations depending on classical information from the sender and the supervisors. Finally, the computational basis measurement will be performed by the recipient to confirm whether the teleportation succeeds or not. The successful completion of the scheme relies on all supervisors' cooperation. In addition, the fidelity and security of the scheme are discussed.

Key words: quantum information, controlled quantum teleportation, W1 state

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.65.Ta (Foundations of quantum mechanics; measurement theory) 03.67.Hk (Quantum communication) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)