Non-Maximally Entangled Controlled Teleportation Using Four Particles Cluster States |
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Authors: | Yi-You Nie Zhi-Hui Hong Yi-Bin Huang Xiao-Jie Yi Song-Song Li |
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Affiliation: | (1) Department of Physics, Jiangxi Normal University, Nanchang, Jiangxi, 330022, China;(2) Key Laboratory of Optoelectronic & Telecommunication of Jiangxi Province, Nanchang, Jiangxi, 330022, China |
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Abstract: | A new scheme for controlled teleportation with the help of a four-qubit cluster state is proposed. In this scheme, a four-particle cluster state is shared by a sender, a controller and a receiver. The sender first performs a Bell-basis measurement on the qubits at hand, and the controller performs measurements under a non-maximally entangled Bell-basis after he knows the sender’s measurement result. Then the receiver introduces an auxiliary qubit and performs some appropriate unitary transformations on his qubits. Quantum teleportation is realized after the receiver performs a local measurement on the auxiliary qubit and an appropriate unitary transformation on his qubit. |
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Keywords: | Controlled teleportation Cluster state Non-maximally entangled state |
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