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Chin. Phys. B, 2008, Vol. 17(3): 771-777    DOI: 10.1088/1674-1056/17/3/006
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Probabilistic teleportation of multi-particle partially entangled state

Chen Xiu-Bo(陈秀波)a)b)†, Du Jian-Zhong(杜建忠)c), Wen Qiao-Yan(温巧燕)a)b), and Zhu Fu-Chen(朱甫臣)d)
a State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China; b School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China; c School of Information Engineering, Beijing University of Science and Technology, Beijing 100083, Chinad National Laboratory for Modern Communications, P O Box 810, Chengdu 610041, China
Abstract  Utilizing the generalized measurement described by positive operator-valued measure, this paper comes up with a protocol for teleportation of an unknown multi-particle entangled (GHZ) state with a certain probability. The feature of the present protocol is to weaken requirement for the quantum channel initially shared by sender and receiver. All unitary transformations performed by receiver are summarized into a formula. On the other hand, this paper explicitly constructs the efficient quantum circuits for implementing the proposed teleportation by means of universal quantum logic operations in quantum computation.
Keywords:  quantum teleportation      quantum circuits      positive operator-valued measure      unitary transformations  
Received:  16 July 2007      Revised:  02 August 2007      Accepted manuscript online: 
PACS:  03.65.Ud (Entanglement and quantum nonlocality)  
  02.50.Cw (Probability theory)  
  03.67.Lx (Quantum computation architectures and implementations)  
  03.67.Mn (Entanglement measures, witnesses, and other characterizations)  
  84.40.Ua (Telecommunications: signal transmission and processing; communication satellites)  
Fund: Project supported by the National High Technology Research and Development Program of China (Grant No 2006AA01Z419), the Major Research Plan of the National Natural Foundation of China (Grant No 90604023), the National Laboratory for Modern Communications Science Foundation of China (Grant No 9140C1101010601), and the Natural Science Foundation of Beijing (Grant No 4072020).

Cite this article: 

Chen Xiu-Bo(陈秀波), Du Jian-Zhong(杜建忠), Wen Qiao-Yan(温巧燕), and Zhu Fu-Chen(朱甫臣) Probabilistic teleportation of multi-particle partially entangled state 2008 Chin. Phys. B 17 771

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