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, China; dNational 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.
Received: 16 July 2007
Revised: 02 August 2007
Accepted manuscript online:
(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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