171Yb+ optical clock with 2.2×10−18 systematic uncertainty and absolute frequency measurements

IF 2.1 3区工程技术 Q2 INSTRUMENTS & INSTRUMENTATION

Metrologia Pub Date : 2024-06-16 DOI:10.1088/1681-7575/ad53cd

A Tofful, C F A Baynham, E A Curtis, A O Parsons, B I Robertson, M Schioppo, J Tunesi, H S Margolis, R J Hendricks, J Whale, R C Thompson and R M Godun

引用次数: 0

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 171Yb+ 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.

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具有 2.2×10-18 系统不确定性的 171Yb+ 光学时钟和绝对频率测量结果

对美国国家物理实验室（NPL）镱离子光学时钟的电八极子（E3）转变的不确定性预算进行了全面评估。此外，2019 年至 2023 年期间，通过与国际原子时（TAI）的链接，并根据本地铯泉 NPL-CsF2 测量了 171Yb+ 离子 E3 转变的绝对频率。测量到的绝对频率的分数标准不确定性介于和之间，均与 2021 年国际计量局建议的频率一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Metrologia 工程技术-物理：应用

CiteScore

2.80

自引率

25.00%

发文量

137

审稿时长

12 months

期刊介绍： Published 6 times per year, Metrologia covers the fundamentals of measurements, particularly those dealing with the seven base units of the International System of Units (metre, kilogram, second, ampere, kelvin, candela, mole) or proposals to replace them. The journal also publishes papers that contribute to the solution of difficult measurement problems and improve the accuracy of derived units and constants that are of fundamental importance to physics. In addition to regular papers, the journal publishes review articles, issues devoted to single topics of timely interest and occasional conference proceedings. Letters to the Editor and Short Communications (generally three pages or less) are also considered.