Controlled quantum state sharing of arbitrary two-qubit states with five-qubit cluster states

doi:10.1088/1674-1056/20/9/090305

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.

Keywords: controlled quantum state sharing five-qubit cluster state Bell-state measurements

Received: 21 March 2011
Revised: 18 May 2011
Accepted manuscript online:

PACS:	03.67.Dd	(Quantum cryptography and communication security)
	03.67.Hk	(Quantum communication)
	03.65.Ud	(Entanglement and quantum nonlocality)

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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