基于元表面的多用户全光学量子网络
Shengshuai Liu1,2,3, Lin Li1,3, Yujie Wang4
1State Key Laboratory of Precision Spectroscopy, Joint Institute of Advanced Science and Technology, School of Physics and Electronic Science, East China Normal University. Shanghai 200062, China.
Science advances
|October 10, 2025
概括
研究人员使用紧的metalens阵列创建了最大的连续变量量子状态共享网络. 这一突破推动了对多个用户的安全,大规模量子网络的开发.
科学领域:
- 量子信息科学 量子信息科学
- 光学元表面是指光学元表面.
- 量子网络是一个量子网络.
背景情况:
- 建立大型多用户量子网络对于安全的信息传输至关重要.
- 当前的挑战包括需要大规模和紧的爱因斯坦-波多尔斯基-罗森 (EPR) 纠状态.
- 连续变量 (CV) 量子网络为量子通信提供了一个有前途的途径.
研究的目的:
- 通过实验生成一个紧的,大规模的连续变量 (CV) 爱因斯坦-波多尔斯基-罗森 (EPR) 纠阵列.
- 在CV制度中建立最大的全光学量子状态共享 (AOQSS) 网络.
- 展示一种新的基于地表的方法来产生CV EPR纠.
主要方法:
- 使用一个metalens阵列来实验生成一个5x5CV EPR纠阵列.
- 基于生成的紧型EPR纠阵列构建了一个五个用户的AOQSS网络.
- 通过测量其对经典极限的忠实性来评估网络的性能.
主要成果:
- 使用metalens阵列成功生成了一个紧的5x5CV EPR纠阵列.
- 建立了一个五个用户的AOQSS网络,其保真度超过了经典的限制.
- 证明了迄今为止CV制度中最大的AOQSS网络.
结论:
- 基于Metasurface的方法为生成大规模和紧的CV EPR纠状态提供了一个有希望的平台.
- 这项工作为建造大型全光多用户量子网络铺平了道路.
- 使用元表面的紧型CV EPR纠生成为先进的量子网络开发开辟了新的可能性.
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