量子网络的灵活量子数据总线

Julia Freund, Alexander Pirker, Wolfgang Dür
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引用次数: 0

摘要

我们考虑了量子网络中贝尔态的多路径生成问题,在这种网络中,一个预先准备好的多方纠缠二维簇态可作为一种资源,按需执行不同的任务。我们展示了如何通过在二维簇态上沿对角线、阶梯形路径执行适当的局部测量,在多个自由选择的当事人组之间实现并行连接。值得注意的是,我们的测量方案保留了簇状态的纠缠结构,因此剩余状态也是二维簇状态。我们展示了沿着二维簇态生成交叉、转向和合并多条测量线的策略。这些结果既适用于局域网络,也适用于长距离网络。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Flexible quantum data bus for quantum networks

Flexible quantum data bus for quantum networks
We consider multipath generation of Bell states in quantum networks, where a preprepared multipartite entangled two-dimensional cluster state serves as a resource to perform different tasks on demand. We show how to achieve parallel connections between multiple, freely chosen groups of parties by performing appropriate local measurements along a diagonal, staircase-shaped path on a two-dimensional cluster state. Remarkably, our measurement scheme preserves the entanglement structure of the cluster state such that the remaining state is again a two-dimensional cluster state. We demonstrate strategies for generating crossing, turning, and merging of multiple measurement lines along the two-dimensional cluster state. The results apply to local area as well as to long-distance networks.
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CiteScore
8.60
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