Multiuser all-optical quantum network based on metasurfaces

IF 12.5 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Advances Pub Date : 2025-10-10 DOI:10.1126/sciadv.adu8455

Shengshuai Liu, Lin Li, Yujie Wang, Minghao Ning, Yanbo Lou, Yingxuan Chen, Rui Zhang, Jiabin Wang, Qinmiao Chen, Quan Yuan, Shuming Wang, Shumin Xiao, Din Ping Tsai, Ya Cheng, Shining Zhu, Jietai Jing

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Abstract

A crucial aspect of quantum information is the establishment of multiuser quantum networks, ensuring secure transmission of information among separated users. However, establishing a large-scale network remains a substantial challenge, requiring massive and compact Einstein-Podolsky-Rosen (EPR) entangled states. Here, we experimentally generate a 5 by 5 continuous variable (CV) EPR entanglement array using a metalens array. Moreover, on the basis of such a compact EPR entanglement array, we establish a five-user all-optical quantum state sharing (AOQSS) network with fidelity beating the corresponding classical limit, which is currently the largest AOQSS network in the CV regime. These results provide a promising platform for the generation of massive and compact EPR entangled states and the construction of large-scale all-optical multiuser quantum networks. Our compact approach for generating CV EPR entanglement based on metasurface opens up avenues for advanced quantum networks.

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基于超表面的多用户全光量子网络

量子信息的一个关键方面是建立多用户量子网络，确保在分离的用户之间安全传输信息。然而，建立一个大规模的网络仍然是一个巨大的挑战，需要大量和紧凑的爱因斯坦-波多尔斯基-罗森（EPR）纠缠态。在这里，我们通过实验产生了一个5 × 5连续变量（CV） EPR纠缠阵列。在此基础上，建立了保真度超过经典极限的五用户全光量子态共享（AOQSS）网络，是目前CV域内最大的AOQSS网络。这些结果为大规模紧凑EPR纠缠态的产生和大规模全光多用户量子网络的构建提供了一个有希望的平台。我们基于超表面生成CV EPR纠缠的紧凑方法为先进的量子网络开辟了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science Advances 综合性期刊-综合性期刊

CiteScore

21.40

自引率

1.50%

发文量

1937

审稿时长

29 weeks

期刊介绍： Science Advances, an open-access journal by AAAS, publishes impactful research in diverse scientific areas. It aims for fair, fast, and expert peer review, providing freely accessible research to readers. Led by distinguished scientists, the journal supports AAAS's mission by extending Science magazine's capacity to identify and promote significant advances. Evolving digital publishing technologies play a crucial role in advancing AAAS's global mission for science communication and benefitting humankind.