Comparing a mercury optical lattice clock with microwave and optical frequency standards
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In this paper we report the evaluation of an optical lattice clock based on neutral mercury with a relative uncertainty of . Comparing this characterized frequency standard to a 133 Cs atomic fountain we determine the absolute frequency of the transition of 199 Hg as (systematic), limited solely by the realization of the SI second. Furthermore, by comparing the mercury optical lattice clock to a 87 Rb atomic fountain, we determine for the first time to our knowledge the ratio between the 199 Hg clock transition and the 87 Rb ground state hyperfine transition. Finally we present a direct optical to optical measurement of the 199 Hg/ 87 Sr frequency ratio. The obtained value of 2.629 314 209 898 909 15 with a fractional uncertainty of is in excellent agreement with a similar measurement obtained by Yamanaka et al (2015 Phys. Rev. Lett. 114 230801 ). This makes this frequency ratio one of the few physical quantities agreed upon by different laboratories to this level of uncertainty. Frequency ratio measurements of the kind reported in this paper have a strong impact for frequency metrology and fundamental physics as they can be used to monitor putative variations of fundamental constants.
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Several optical frequency ratio measurements and independent absolute frequency measurements of optical lattice clocks have been made locally at INRIM, LNE-SYRTE, NPL, and PTB, all of which operate one or more optical clocks and Cs primary frequency standards.
“Several optical frequency ratio measurements as well as independent absolute frequency measurements of optical lattice clocks have been made locally at the following NMIs”
From Chronometric Geodesy: Methods and Applications (2019) · cites this paper as [106]
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- Authors
- Tyumenev, R., Favier, M., Bilicki, S., Bookjans, E., Targat, R. L., Lodewyck, J., Nicolodi, D., Coq, Y. L., Abgrall, M., Guéna, J., Sarlo, L. D., & Bize, S.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Corresponding author
- Sarlo, L De
- Venue
- New Journal of Physics
- Publisher
- IOP Publishing
- Published
- 2016-11-02
- Volume
- 18
- Issue
- 11
- Pages
- 113002
- ISSN
- 1367-2630 (ISSN-L)
- OpenAlex
- W2295139653
- Cited by
- 85
- References
- 40
- Citations by year
- 2026: 3 · 2025: 10 · 2024: 7 · 2023: 7 · 2022: 8 · 2021: 2 · 2020: 12 · 2019: 11 · 2018: 7 · 2017: 16 · 2016: 2
- FWCI
- 5.68
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- New Journal of Physics (publishedVersion, cc-by)
- arXiv (Cornell University) (submittedVersion)
- HAL (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Région Ile de France (DIM Nano K)
- EMRP (JRP ITOC)
- European Research Council (AdOC)
- Centre National d’Études Spatiales
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Frequency and Time Standards
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Scientific Measurement and Uncertainty Evaluation
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Electrical Measurement Techniques
- Keywords
- frequency ratio measurement, frequency standard comparison, hyperfine transitions, frequency metrology, variation of fundamental constants
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