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arXiv 0904.2679physics.optics
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通过146 km光纤链路实现10^{-19}相对精度的光频率传输

Optical frequency transfer via 146 km fiber link with 10^{-19} relative accuracy

G. Grosche, O. Terra, K. Predehl, R. Holzwarth, B. Lipphardt, F. Vogt, U. Sterr, H. Schnatz

摘要:

我们演示了直接从最先进的光频标中获得的超稳定光频的长距离传输。使用主动稳定系统,我们通过146 km长的地下光纤链路传输频率,1 s时的分数不稳定性为3*10^{-15},这接近我们传输实验的理论极限。在30 000秒后,转移的相对不确定度低于1*10^{-19}。用非常短的光纤进行的测试表明,在我们的稳定系统中的噪声贡献了低两个数量级的波动,即在1 s时为3*10^{-17},在4000 s后达到10^{-20}。

英文摘要:

We demonstrate the long-distance transmission of an ultra-stable optical frequency derived directly from a state-of-the-art optical frequency standard. Using an active stabilization system we deliver the frequency via a 146 km long underground fiber link with a fractional instability of 3*10^{-15} at 1 s, which is close to the theoretical limit for our transfer experiment. The relative uncertainty for the transfer is below 1*10^{-19} after 30 000 seconds. Tests with a very short fiber show that noise in our stabilization system contributes fluctuations which are two orders of magnitude lower, namely 3*10^{-17} at 1 s, reaching 10^{-20} after 4000 s.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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