中国物理B ›› 2006, Vol. 15 ›› Issue (5): 915-918.doi: 10.1088/1009-1963/15/5/007

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Teleportation of an unknown bipartite state via non-maximally entangled two-particle state

曹海静, 郭彦青, 宋鹤山   

  1. Department of Physics, Dalian University of Technology,Dalian 116024, China
  • 收稿日期:2005-10-31 修回日期:2006-01-06 出版日期:2006-05-20 发布日期:2006-05-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 60472017 and 10575017).

Teleportation of an unknown bipartite state via non-maximally entangled two-particle state

Cao Hai-Jing (曹海静), Guo Yan-Qing (郭彦青), Song He-Shan (宋鹤山)   

  1. Department of Physics, Dalian University of Technology,Dalian 116024, China
  • Received:2005-10-31 Revised:2006-01-06 Online:2006-05-20 Published:2006-05-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 60472017 and 10575017).

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摘要： In this paper a new scheme for teleporting an unknown entangled state of two particles is proposed. To weaken the requirement for the quantum channel, without loss of generality, two communicators only share a non-maximally entangled two-particle state. Teleportation can be probabilistically realized if sender performs Bell-state measurements and Hadamard transformation and receiver introduces two auxiliary particles, operates C-not operation, single-qubit measurements and appropriate unitary transformations. The probability of successful teleportation is determined by the smaller one among the coefficients' absolute values of the quantum channel.

关键词: teleportation, Bell-state measurements, Hadamard transformation, $C$-not operation

Abstract: In this paper a new scheme for teleporting an unknown entangled state of two particles is proposed. To weaken the requirement for the quantum channel, without loss of generality, two communicators only share a non-maximally entangled two-particle state. Teleportation can be probabilistically realized if sender performs Bell-state measurements and Hadamard transformation and receiver introduces two auxiliary particles, operates C-not operation, single-qubit measurements and appropriate unitary transformations. The probability of successful teleportation is determined by the smaller one among the coefficients' absolute values of the quantum channel.

Key words: teleportation, Bell-state measurements, Hadamard transformation, $C$-not operation

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.65.Db (Functional analytical methods) 03.65.Ta (Foundations of quantum mechanics; measurement theory)