Multi-party quantum state sharing of an arbitrary two-qubit state with Bell states
Multi-party quantum state sharing of an arbitrary two-qubit state with Bell states
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任意两个量子位状态与贝尔态的多方量子状态共享
DOI：
10.1007/s11128-010-0191-0
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发表时间：
2011-04-01
影响因子：
2.5
通讯作者：
Zhong, Hong
中科院分区：
文献类型：
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作者：
Shi, Run-hua;Huang, Liu-sheng;Zhong, Hong
我们提出了一个新的方案，用于与多个代理共享任意两个量子比特的量子态。在我们的方案中，发送者Alice首先在Bell态与nAgents共享Einsein-Podolsky-Rosen(EPR)对。在建立安全量子通道后，爱丽丝首先应用(n−2)可控非(Cnot)门操作，然后执行两个贝尔态测量和(n−2)单粒子测量(n>；2)。此外，所有控制器分别只有一个粒子在手中，因此它们只需要对具有基础的各个粒子执行单个粒子测量。与其他具有Bell态的方案相比，我们的方案需要更少的量子比特作为量子资源，交换更少的经典信息，从而获得更高的总效率。
We present a new scheme for sharing an arbitrary two-qubit quantum state withnagents. In our scheme, the sender Alice first sharesnEinsein-Podolsky-Rosen (EPR) pairs in Bell states withnagents. After setting up the secure quantum channel, Alice first applies (n− 2) Controlled-Not (CNOT) gate operations, and then performs two Bell-state measurements and (n− 2) single-particle measurements (n>2). In addition, all controllers only hold one particle in their hands, respectively, and thus they only need to perform a single-particle measurement on the respective particle with the basis. Compared with other schemes with Bell states, our scheme needs less qubits as the quantum resources and exchanges less classical information, and thus obtains higher total efficiency.