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《Acta Photonica Sinica》 2010-10
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Quantum Teleportation with Linear Cluster-class States

ZHONG Feng1,YU Li-zhi2,LI Chun-shu1(1 Department of Physics,Hunan University of Science and Engineering,Yongzhou,Hunan 425100,China)(2 Department of Physics and Electrics,Fuyang Teachers College,Fuyang,Anhui 236041,China)  
A scheme for teleportation of an arbitrary two-qubit state using a four-qubit linear cluster-class state is proposed.Quantum teleportation can be successfully realized with a certain probability if the receiver can adopt an appropriate collective unitary transformation after receiving the sender's Bell-state measurement information.The scheme is more practical than previous ones using maximally entangled states as the quantum channel.In addition,an important conclusion is obtained from the above scheme that a maximally four-qubit entangled state(cluster state)is extracted from a single copy of the cluster-class state with the same probability as the teleportation.
【Fund】: Supported by the Youth Talent Foundation of Anhui Province(2010SQRL146);; the Anhui Provincial NaturalScience Research Project of University(KJ2010B106)
【CateGory Index】: O431.2
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