发表机构
Duke University; University of Maryland（杜克大学; 马里兰大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究首次实验证明，在承载以太网和5G流量的已部署2.8公里光纤上，囚禁离子量子网络与电信信号可共存，从而利用现有经典光纤基础设施实现量子链路。
AI 中文摘要
迄今为止，基于长距离量子存储器的网络研究仅使用暗光纤。这避免了电信（telecom）流量带来的探测器背景噪声，但因此排除了许多现场部署的光纤。如果存储器-光子纠缠与电信信号能在同一光纤上共存，那么整个经典光纤基础设施都可用于量子链路。我们首次实验演示了这种共存。利用锶-88离子发射的1092纳米光子产生的离子-光子纠缠，在一条承载以太网和5G流量的已部署2.8公里光纤环路上进行分发。协调量子发射器和接收器系统所需的所有经典控制信号在同一光纤上共同传播，包括用于偏振稳定的光纤传感。我们的结果表明，基于存储器的量子网络可以在活跃的经典网络基础设施上实现。
英文摘要
Research into long-distance quantum memory-based networking to date has exclusively used dark fibers. This avoids the detector background from telecommunications (telecom) traffic, but as a result excludes many fibers deployed in the field. If memory-photon entanglement and telecom signals coexist on one fiber, the entire classical fiber infrastructure becomes available for quantum links. We present the first experimental demonstration of such coexistence. Ion-photon entanglement using 1092 nm photons emitted by a Strontium-88 ion is distributed over a deployed 2.8 km fiber loop which carries Ethernet and 5G traffic. All classical control signals required to coordinate the quantum transmitter and receiver systems co-propagate on the same fiber. These include fiber sensing for polarization stabilization. Our results demonstrate that memory-based quantum networks can be realized on active classical network infrastructure.
