通过相位一致光纤实现频率漂移校正的超稳激光——用于量子信道
量子物理
2026-02-05 v1
摘要
相位一致光纤(PCF)是分配近似单色光子、其频率和相位极为稳定的关键技术，对 state-of-the-art 网络化实验尤其是量子实验以及高速通信具有严苛要求。我们报道了一种新型系统，用于生产 PCF 链路，并主动校正源激光不可避免的慢速频率漂移。PCF 遵循受白相位噪声限制的 稳定性行为，其 值分别为 和 ，对应 3.3 km 现场部署和 71 km 纱线光纤，相位噪声抑制最高可达 47.5 dB。此外，系统还能将源激光的 33.8 mHz/s 频率漂移校正至约 mHz/s。因此，本方案为生产量子链路可实现 nearly 73 倍降低因非稳定光纤链路引起的 QBER，从而放宽激光频率漂移校正约束。
引用
@article{arxiv.2509.08419,
title = {Frequency drift corrected ultra-stable laser through phase-coherent fiber producing a quantum channel},
author = {Stanley Johnson and Sandeep Mishra and Anirban Pathak and Subhadeep De},
journal= {arXiv preprint arXiv:2509.08419},
year = {2026}
}
备注
We demonstrate the generation of a phase stabilized coherent optical fiber link using the in-house developed optical and electronic hardware. The developed system can simultaneously compensate the slow frequency drift of an ultra-stable source laser to 6.2 mHz/s using optical self-referencing and as low as 0.05 mHz/s using absolute optical frequency referencing techniques