$^{171}$Yb$^+$ optical clock with $2.2\times 10^{-18}$ systematic uncertainty and absolute frequency measurements
Atomic Physics
2024-11-14 v1
Abstract
A full evaluation of the uncertainty budget for the ytterbium ion optical clock at the National Physical Laboratory (NPL) was performed on the electric octupole (E3) transition. The total systematic frequency shift was measured with a fractional standard systematic uncertainty of . Furthermore, the absolute frequency of the E3 transition of the Yb ion was measured between 2019 and 2023 via a link to International Atomic Time (TAI) and against the local caesium fountain NPL-CsF2. The absolute frequencies were measured with fractional standard uncertainties between and , and all were in agreement with the 2021 BIPM recommended frequency.
Keywords
Cite
@article{arxiv.2403.14423,
title = {$^{171}$Yb$^+$ optical clock with $2.2\times 10^{-18}$ systematic uncertainty and absolute frequency measurements},
author = {Alexandra Tofful and Charles F. A. Baynham and E. Anne Curtis and Adam O. Parsons and Billy I. Robertson and Marco Schioppo and Jacob Tunesi and Helen S. Margolis and Richard J. Hendricks and Josh Whale and Richard C. Thompson and Rachel M. Godun},
journal= {arXiv preprint arXiv:2403.14423},
year = {2024}
}
Comments
16 pages, 8 figures, submitted to Metrologia