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Controlled quantum state sharing of arbitrary two-qubit states with five-qubit cluster states |
Wang Dong(王东)a)b)†, Zha Xin-Wei(查新未)b), Lan Qian(兰倩)b), Li Ning(李宁)a)b), and Wei Jing(卫静)b) |
a School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710061, China; b School of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710061, China |
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Abstract In this paper, we propose a controlled quantum state sharing scheme to share an arbitrary two-qubit state using a five-qubit cluster state and the Bell state measurement. In this scheme, the five-qubit cluster state is shared by a sender (Alice), a controller (Charlie), and a receiver (Bob), and the sender only needs to perform the Bell-state measurements on her particles during the quantum state sharing process, the controller performs a single-qubit projective measurement on his particles, then the receiver can reconstruct the arbitrary two-qubit state by performing some appropriate unitary transformations on his particles after he has known the measured results of the sender and the controller.
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Received: 21 March 2011
Revised: 18 May 2011
Accepted manuscript online:
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PACS:
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03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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Cite this article:
Wang Dong(王东), Zha Xin-Wei(查新未), Lan Qian(兰倩), Li Ning(李宁), and Wei Jing(卫静) Controlled quantum state sharing of arbitrary two-qubit states with five-qubit cluster states 2011 Chin. Phys. B 20 090305
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