论文标题
C+L波段弹性网格量子网络的宽带极化源
Broadband polarization-entangled source for C+L-band flex-grid quantum networks
论文作者
论文摘要
光网络中对传输能力的不断增长激发了人们对标准C波段（1530-1565 nm）超出相邻L波段（1565-1625 nm）的稳定兴趣，以使单一中风的容量大约增加。但是，在量子网络的背景下，利用L波段的能力将需要高级工具来表征和管理迄今为止落后的纠缠资源。在这项工作中，我们演示了一个超级生产的两光源源，该源集成了C-和L波长选择性开关，以完全控制单个设置中7.5 THz的光谱路由和分配。所有150对25 GHz范围的通道的极化状态层析成像显示，平均富达度为0.98，总可蒸馏纠缠大于181烤肉饼/s。该来源是针对弹性网络光网络的明确设计的，可以促进整个C+L波段范围内的最佳利用。
The rising demand for transmission capacity in optical networks has motivated steady interest in expansion beyond the standard C-band (1530-1565 nm) into the adjacent L-band (1565-1625 nm), for an approximate doubling of capacity in a single stroke. However, in the context of quantum networking, the ability to leverage the L-band will require advanced tools for characterization and management of entanglement resources which have so far been lagging. In this work, we demonstrate an ultrabroadband two-photon source integrating both C- and L-band wavelength-selective switches for complete control of spectral routing and allocation across 7.5 THz in a single setup. Polarization state tomography of all 150 pairs of 25 GHz-wide channels reveals an average fidelity of 0.98 and total distillable entanglement greater than 181 kebits/s. This source is explicitly designed for flex-grid optical networks and can facilitate optimal utilization of entanglement resources across the full C+L-band.
