基于cluster态任意单粒子态可控量子信息共享

发布时间：2018-02-28 03:41

本文关键词： 量子通信团簇态 Bell基测量幺正变换可控量子隐性传态　出处：《光子学报》2014年09期 　论文类型：期刊论文

【摘要】：基于cluster态具有较强的纠缠顽固性,提出两个利用四粒子cluster态传送任意单粒子态的量子信息共享方案.第一个方案中发送者Alice、控制者Charlie和接收者Bob共享一个四粒子纠缠态,首先Alice对自己拥有的粒子执行一个三粒子Von-Neumann联合测量,然后Charlie对其拥有粒子执行Z基测量,最后Bob根据发送者和控制者的测量结果,对所拥有的粒子做适当的幺正变换,就能重建共享的单粒子任意态.第二个方案利用一个辅助粒子,发送者Alice、控制者Charlie只需做Bell基测量,Bob通过比特位翻转和幺正变换即可得到Alice传送的量子态.与已有方案相比,两方案信息共享的成功概率为100%,且只需四粒子cluster态为载体,可在目前实验室技术条件下实现.
[Abstract]:Based on the strong entanglement obstinacy of cluster state, two quantum information sharing schemes using four-particle cluster state to transmit arbitrary single-particle state are proposed. In the first scheme, the senders, the controller Charlie and the receiver Bob share a four-particle entangled state. First, Alice performs a three-particle Von-Neumann joint measurement of the particles owned by himself, then Charlie performs Z-base measurements on the particles owned by them. Finally, according to the measurement results of the sender and the controller, the Bob performs an appropriate unitary transformation of the particles in possession. The second scheme uses an auxiliary particle, the sender Alice, and the controller Charlie to get the quantum state transmitted by Alice through bit inversion and unitary transformation. The probability of information sharing between the two schemes is 100%, and only four particle cluster state is used as the carrier, which can be realized under the present conditions of laboratory technology.
【作者单位】：陕西师范大学数学与信息科学学院;洛阳师范学院数学科学学院;陕西师范大学物理技术信息学院;
【基金】：国家自然科学基金(Nos.61202317,61373150,61272436) 陕西省自然科学基础研究计划项目(No.2012JQ8023) 中央高校基金项目(No.GK201002041) 河南省高校科技创新人才项目(No.13HASTIT042)资助
【分类号】：TN918;O413

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