第19位小数不稳定度下的113公里自由空间时频传递
仪器与探测器
2023-04-05 v1 光学
摘要
光钟网络在精确导航、'秒'单位重新定义和引力测试等多个领域发挥重要作用。为建立全球尺度光钟网络,必需在长距离自由空间链路上以的稳定度传递时间和频率。然而,此类尝试在折叠反射镜配置中仅限于数十公里。在此,我们朝未来的星基时频传递迈出了关键一步。通过开发关键技术,包括高功率频率梳、高稳定高效率光收发系统以及高效线性光学采样,我们展示了在两条独立链路上的自由空间时频传递,其飞秒级时间偏差、10,000秒时残余不稳定度为、偏移为。该稳定度水平在信道损耗增加至89 dB时依然保持。我们的工作不仅可直接用于地基应用,也为未来的卫星时频传递奠定了坚实基础。
引用
@article{arxiv.2203.11272,
title = {113 km Free-Space Time-Frequency Dissemination at the 19th Decimal Instability},
author = {Qi Shen and Jian-Yu Guan and Ji-Gang Ren and Ting Zeng and Lei Hou and Min Li and Yuan Cao and Jin-Jian Han and Meng-Zhe Lian and Yan-Wei Chen and Xin-Xin Peng and Shao-Mao Wang and Dan-Yang Zhu and Xi-Ping Shi and Zheng-Guo Wang and Ye Li and Wei-Yue Liu and Ge-Sheng Pan and Yong Wang and Zhao-Hui Li and Jin-Cai Wu and Yan-Yan Zhang and Fa-Xi Chen and Chao-Yang Lu and Sheng-Kai Liao and Juan Yin and Jian-Jun Jia and Cheng-Zhi Peng and Hai-Feng Jiang and Qiang Zhang and Jian-Wei Pan},
journal= {arXiv preprint arXiv:2203.11272},
year = {2023}
}
备注
27 pages, 13 figures, 2 tables