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Several teleportation schemes of an arbitrary unknown multi-particle state via different quantum channels |
| Peng Jia-Yin (彭家寅)a b, Mo Zhi-Wen (莫智文)a |
a School of Mathematics and Software Science, Sichuan Normal University, Chengdu 610066, China;
b School of Mathematics and Information Science, Neijiang Normal University, Neijiang 641100, China |
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Abstract We first provide four new schemes for two-party quantum teleportation of an arbitrary unknown multi-particle state by using three-, four- and five-particle states as the quantum channel, respectively. The successful probability and fidelity of the four schemes reach 1. In the first two schemes, the receiver can only apply one of the unitary transformations to reconstruct the original state, making it easier for these two schemes to be directly realized. In the third and fourth schemes, the sender can preform Bell-state measurements instead of multipartite entanglement measurements of the existing similar schemes, which makes real experiments more suitable. It is found that the last three schemes may become tripartite controlled teleportation schemes of teleporting an arbitrary multi-particle state after a simple modification. Finally, we present a new scheme for three-party sharing an arbitrary unknown multi-particle state. In this scheme, the sender first shares three three-particle GHZ states with two agents. After setting up the secure quantum channel, an arbitrary unknown multi-particle state can be perfectly teleported if the sender performs three Bell-state measurements, and either of two receivers operates an appropriate unitary transformation to obtain the original state with the help of other receiver's three single-particle measurements. The successful probability and fidelity of this scheme also reach 1. It is demonstrated that this scheme can be generalized easily to the case of sharing an arbitrary unknown multi-particle state among several agents.
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Received: 22 August 2012
Revised: 02 November 2012
Accepted manuscript online:
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PACS:
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03.67.Hk
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(Quantum communication)
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03.67.Dd
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(Quantum cryptography and communication security)
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03.65.Ud
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(Entanglement and quantum nonlocality)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11071178). |
Corresponding Authors:
Peng Jia-Yin
E-mail: pengjiayin62226@yahoo.com.cn
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Cite this article:
Peng Jia-Yin (彭家寅), Mo Zhi-Wen (莫智文) Several teleportation schemes of an arbitrary unknown multi-particle state via different quantum channels 2013 Chin. Phys. B 22 050310
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