基于六方氮化硼单光子源的混合自由空间光量子通信网络方案
A proposal for a hybrid free-space optical quantum communication network with hexagonal boron nitride-based single photon sources
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中文总结 AI 辅助
本文提出基于六方氮化硼单光子源的混合自由空间光量子通信网络方案，可实现日间运行、光纤对接“最后一公里”，为量子互联网发展提供重要支撑。
中文摘要 AI 辅助
六方氮化硼（hBN）是极具潜力的固态平台，可在室温下产生高纯度单光子量子发射器。该类明亮且光谱可调的hBN发射器具备空间适配性，适合在大气背景自然被抑制的波长下，开展基于卫星的自由空间光（FSO）量子密钥分发（QKD）。本文提出开发工作于Ca-II夫琅禾费线（854 nm）附近的hBN发射器，以实现日间FSO运行；同时，因该波长与第一电信窗口（850 nm）兼容，可与光纤对接，在多终端用户通过单个光学地面站连接QKD卫星的场景中，解决“最后一公里”问题。本文引入的方案结合了量子网络连续运行能力、最小化部署成本的混合链路，以及采用实际单光子源带来的高数据速率，其实现将是量子互联网发展的重要里程碑。
英文摘要
Hexagonal boron nitride (hBN) is known as a promising solid-state platform to host room temperature quantum emitters that produce high purity single photons. The bright and spectrally adaptable hBN emitters are space-compatible, making hBN well-suited for satellite-based free-space optical (FSO) quantum key distribution (QKD) at wavelengths where the atmospheric background is naturally suppressed. This paper presents a pathway to develop hBN emitters operating near the Ca-II Fraunhofer line (at 854 nm), enabling daylight FSO operation. Moreover, due to its compatibility with the first telecommunication window at 850 nm, it is possible to interface with optical fibers to bridge the `last mile' in a scenario where multiple end-users connect through a single optical ground station to a QKD satellite. We therefore introduce a concept that combines continuous operation of a quantum network, hybrid links to minimize deployment costs, and high data rates due to the use of realistic single photon sources. The realization would be an important milestone for the development of the quantum internet.
发表机构
- Munich Center for Quantum Science and Technology (MCQST)（慕尼黑量子科学与技术中心）
机构由 AI 辅助整理，请以论文原文为准。
