Long-distance chronometric leveling with a portable optical clock
Atomic Physics
2024-12-02 v3 Quantum Physics
Abstract
We have measured the geopotential difference between two locations separated by by comparison of two optical lattice clocks via an interferometric fiber link, utilizing the gravitational redshift of the clock transition frequency. The Sr clocks have been compared side-by-side before and after one of the clocks was moved to the remote location. The chronometrically measured geopotential difference of agrees with an independent geodetic determination of . The uncertainty of the chronometric geopotential difference is equivalent to an uncertainty of in height.
Cite
@article{arxiv.2309.14953,
title = {Long-distance chronometric leveling with a portable optical clock},
author = {J. Grotti and I. Nosske and S. B. Koller and S. Herbers and H. Denker and L. Timmen and G. Vishnyakova and G. Grosche and T. Waterholter and A. Kuhl and S. Koke and E. Benkler and M. Giunta and L. Maisenbacher and A. Matveev and S. Dörscher and R. Schwarz and A. Al-Masoudi and T. W. Hänsch and Th. Udem and R. Holzwarth and C. Lisdat},
journal= {arXiv preprint arXiv:2309.14953},
year = {2024}
}