A strontium lattice clock with $3 \times 10^{-17}$ inaccuracy and its frequency
Atomic Physics
2014-08-18 v2
Abstract
We have measured the absolute frequency of the optical lattice clock based on Sr at PTB with an uncertainty of using two caesium fountain clocks. This is close to the accuracy of today's best realizations of the SI second. The absolute frequency of the 5s S-5s5p P transition in Sr is 429,228,004,229,873.13(17) Hz. Our result is in excellent agreement with recent measurements performed in different laboratories worldwide. We improved the total systematic uncertainty of our Sr frequency standard by a factor of five and reach , opening new prospects for frequency ratio measurements between optical clocks for fundamental research, geodesy, or optical clock evaluation.
Keywords
Cite
@article{arxiv.1312.3419,
title = {A strontium lattice clock with $3 \times 10^{-17}$ inaccuracy and its frequency},
author = {Stephan Falke and Nathan Lemke and Christian Grebing and Burghard Lipphardt and Stefan Weyers and Vladislav Gerginov and Nils Huntemann and Christian Hagemann and Ali Al-Masoudi and Sebastian Häfner and Stefan Vogt and Uwe Sterr and Christian Lisdat},
journal= {arXiv preprint arXiv:1312.3419},
year = {2014}
}
Comments
20 pages, 5 figures