论文标题
量子网络中纠缠分布的自适应带宽管理
Adaptive bandwidth management for entanglement distribution in quantum networks
论文作者
论文摘要
柔性网格波长划分多路复用是Lightwave通信的强大工具，可最大程度地提高光谱效率。在量子网络的新兴领域中，鉴于功率较低，对损失的敏感性较高以及数字误差校正的不适用性，对有效资源提供的需求特别急切。在这封信中，我们利用弹性网格技术来证明在四用户桌网络中量子纠缠的可重构分布。通过使用单个波长选择开关对带宽进行自适应划分，我们成功地取得了两党重合率的均衡，最初在两个数量级以上差异。我们的可扩展方法引入了用户数量固定的损失，为在大量子网络中建立和管理服务质量保证提供了实用的途径。
Flexible-grid wavelength-division multiplexing is a powerful tool in lightwave communications for maximizing spectral efficiency. In the emerging field of quantum networking, the need for effective resource provisioning is particularly acute, given the generally lower power levels, higher sensitivity to loss, and inapplicability of digital error correction. In this Letter, we leverage flex-grid technology to demonstrate reconfigurable distribution of quantum entanglement in a four-user tabletop network. By adaptively partitioning bandwidth with a single wavelength-selective switch, we successfully equalize two-party coincidence rates that initially differ by over two orders of magnitude. Our scalable approach introduces loss that is fixed with the number of users, offering a practical path for the establishment and management of quality-of-service guarantees in large quantum networks.
