Optimal Remote Preparation of a Four-Qubit Entangled Cluster-Type State Via Two Non-Maximally Entangled GHZ-Type States

Optimal Remote Preparation of a Four-Qubit Entangled Cluster-Type State Via Two Non-Maximally Entangled GHZ-Type States
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通过两个非最大纠缠 GHZ 型态优化远程制备四量子位纠缠簇型态

DOI:
10.1007/s10773-016-3060-5
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发表时间:
2016-06
影响因子:
1.4
通讯作者:
Lian-fang Han
Lian-fang Han
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Zhang-yin Wang;Dong Wang;Lian-fang Han

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我们设计了一个高效的远程制备四量子比特纠缠团簇类态的协议。在该协议中,发送方Alice和接收方Bob使用两个非最大纠缠的GHZ态连接起来,一般情况下可以以(B1B2)2的概率成功地重构待准备态。然后,为了实现我们所关心的以更高的成功率构造有效的远程制备,我们详细地研究了一些特殊的四比特态系综。结果表明,在这些特殊情况下,RSP协议的总概率可以提高到一般情况下的两倍甚至四倍。
We devise an highly efficient protocol for remotely preparing a four-qubit entangled cluster-type state. In this protocol, two non-maximally entangled GHZ-type states are employed to link the sender Alice and the receiver Bob, and the to-be-prepared state can be reconstructed successfully with the probability of (b1b2)2in general case. Then to achieve our concerns of constructing efficient remote preparation with higher success probability, some special ensembles of four-qubit states are minutely investigated. As a result, it is shown that the total probability of the RSP protocol, in these particular cases, can be improved to twice or even fourfold as that in general case.
DOI: 10.1103/physrevlett.98.050504
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