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Cited by 63Advanced Frequency and Time StandardsScientific Measurement and Uncertainty EvaluationAdvanced Electrical Measurement Techniques

Absolute frequency measurement of the 1S0–3P0 transition of 171Yb with a link to international atomic time

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Pizzocaro, Marco, Bregolin, Filippo, Barbieri, Piero, Rauf, Benjamin, Levi, Filippo, Calonico, Davide·2020·Metrologia
DOI 10.1088/1681-7575/ab50e8
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Abstract

We report the absolute frequency measurement of the unperturbed optical clock transition 1 S 0–3 P 0 in 171 Yb performed with an optical lattice frequency standard. Traceability to the International System of Units is provided by a link to International Atomic Time. The measurement result is 518 295 836 590 863.61(13) Hz with a relative standard uncertainty of , obtained operating our 171 Yb optical frequency standard intermittently for 5 months. The 171 Yb optical frequency standard contributes with a systematic uncertainty of .

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  • The gravitational redshift induced by the different gravitational potential at the position of the optical clocks has been accounted for in the clock systematic shifts, bringing a relative correction of -1.765(2) × 10^-14 to the frequency ratio.

    “The gravitational redshift induced by the different gravitational potential at the position of the optical clocks 34,35 has been accounted for in the clock systematic shifts, bringing a relative correction of -1.765(2) × 10 -14 to the frequency ratio.”

    From Intercontinental comparison of optical atomic clocks through very long baseline interferometry (2021) · cites this paper as [34]

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    Experimental — accuracy not yet measured

  • They used the VLBI frequency link to compare two optical clocks: IT-Yb1 at INRIM in Torino and NICT-Sr1 in Koganei.

    “We used this VLBI frequency link to compare two optical clocks: the ytterbium-171 optical lattice clock 34 IT-Yb1 at INRIM in Torino (Italy) and the strontium-87 optical lattice clock 35,36 NICT-Sr1 in Koganei.”

    From Intercontinental comparison of optical atomic clocks through very long baseline interferometry (2021) · cites this paper as [34]

  • The four frequency ratios in Eq. 5 were not measured simultaneously and need to be extrapolated to common intervals using the hydrogen masers as flywheel oscillators.

    “The four frequency ratios in Eq. 5 were not measured simultaneously and need to be extrapolated to common intervals using the hydrogen masers as flywheel oscillators 34,35,85 .”

    From Intercontinental comparison of optical atomic clocks through very long baseline interferometry (2021) · cites this paper as [34]

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References 73 · Cited by 63

Research works printed but not linked: 66

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Authors
Pizzocaro, M., Bregolin, F., Barbieri, P., Rauf, B., Levi, F., & Calonico, D.
Affiliations
  • Istituto Nazionale di Ricerca Metrologica (IT)
  • Politecnico di Torino (IT)
Corresponding author
Pizzocaro, Marco
ORCID
Venue
Metrologia
Publisher
IOP Publishing
Published
2020-05-14
Volume
57
Issue
3
Pages
035007
ISSN
  • 0026-1394 (ISSN-L)
  • 1681-7575
DOI
10.1088/1681-7575/ab50e8
OpenAlex
W2982223298
Cited by
63
References
73
Citations by year
2026: 3 · 2025: 6 · 2024: 7 · 2023: 15 · 2022: 15 · 2021: 7 · 2020: 10
FWCI
3.52
Type
journal article
Language
en
Open access
Licence
Locations
  • Metrologia (publishedVersion, cc-by)
  • CINECA IRIS Institutional Research Information System (IRIS Istituto Nazionale di Ricerca Metrologica) (submittedVersion, cc-by)
  • PORTO@Iris (submittedVersion, cc-by)
Funders
  • Agenzia Spaziale Italiana (DTF-Matera)
  • European Metrology Programme for Innovation and Research (15SIB03 OC18)
  • H2020 Marie Skłodowska-Curie Actions (691156)
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
171Yb, ytterbium, 1S0-3P0 transition, optical clock transition, absolute frequency measurement, International Atomic Time, systematic uncertainties

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