论文标题
放大纤维链路中纠缠辅助通信的缩放
Scaling of Entanglement-Assisted Communication in Amplified Fiber Links
论文作者
论文摘要
量子信息处理技术提供了多种通信策略，这些策略提供了与经典技术相比的能力优势。但是，优势通常仅在非常特殊的通信方案中出现，而这些方案在公共网络中使用的使用有限。最重要的是，迄今为止，仅在系统容量低于商业上有趣的值的情况下才发现了惊人的容量优势。在这项工作中，我们提出了一种新颖的方案，预共享纠缠具有任意高容量优势，并且同时数据速率与未来的网络需求兼容。我们的方法基于这样的观察，即仅通过折射率调整折射率，可以增加多模式纤维中的模式数量，同时保持纤维直径。
Quantum information processing technology offers several communication strategies, which offer capacity advantages over classical technologies. However, advantages typically arise only in very particular communication scenarios which are of limited use in public networks. Most importantly, striking capacity advantages have so far been found only for cases where the system capacity is way below commercially interesting values. In this work we present a novel scenario where pre-shared entanglement offers arbitrarily high capacity advantages, and where at the same time data rates are compatible with future network demand. Our approach rests on the observation that the number of modes in multi-mode fiber can be increased solely by tuning of the refractive index, while maintaining the fiber diameter.
