论文标题
量子通信网络的极化补偿方法
Polarization compensation methods for quantum communication networks
论文作者
论文摘要
量子密钥分布提供的信息理论无条件安全性促使了更大的量子通信网络的发展。但是，随着这些网络的增长，降低复杂性和开销的强大需求也是如此。基于极化的纠缠分布网络是一种有希望的方法，因为它们的可伸缩性和缺乏可信赖的节点。然而，仅当网络中所有光学分布纤维的双折射都得到补偿以保留基于极化的量子状态时，它们才可行。即使是中等大小的网络，蛮力方法也需要几百个光纤极化控制器。相反，我们提出并研究了四种不同的极化补偿方法。我们根据复杂性，努力，中断程度与网络操作和性能进行比较。
The information-theoretic unconditional security offered by quantum key distribution has spurred the development of larger quantum communication networks. However, as these networks grow so does the strong need to reduce complexity and overheads. Polarization based entanglement distribution networks are a promising approach due to their scalability and lack of trusted nodes. Nevertheless, they are only viable if the birefringence of all optical distribution fibres in the network is compensated to preserve the polarization based quantum state. The brute force approach would require a few hundred fibre polarization controllers for even a moderately sized network. Instead, we propose and investigate four different methods of polarization compensation. We compare them based on complexity, effort, level of disruption to network operations and performance.
