论文标题
基于稳定的极化纠缠基于大都市纤维网络的量子键分布
Stable Polarization Entanglement based Quantum Key Distribution over Metropolitan Fibre Network
论文作者
论文摘要
我们证明了对部署的深色电信纤维的量子密钥分布实现，其在O波段中产生了极化的诱导光子。成对中的一个光子通过10公里的部署纤维传播，而其他光纤被局部检测到。通过纤维传播的光子经历的极化漂移与液晶变性延迟器补偿。这样可以确保连续稳定的QKD操作，平均QBER为6.4％，最终关键率为109位/s。
We demonstrate a quantum key distribution implementation over deployed dark telecom fibers with polarisation-entangled photons generated at the O-band. One of the photons in the pairs are propagated through 10km of deployed fiber while the others are detected locally. Polarisation drifts experienced by the photons propagating through the fibers are compensated with liquid crystal variable retarders. This ensures continuous and stable QKD operation with an average QBER of 6.4% and a final key rate of 109 bits/s.
