Absolute frequency measurement of the optical clock transition in with an uncertainty of using a frequency link to international atomic time

Charles F.A. Baynham; Rachel M. Godun; Jonathan M. Jones; Steven A. King; Peter B.R. Nisbet-Jones; Fred Baynes; Antoine Rolland; Patrick E.G. Baird; Kai Bongs; Patrick Gill; Helen S. Margolis

doi:10.1080/09500340.2017.1384514

Absolute frequency measurement of the optical clock transition in with an uncertainty of using a frequency link to international atomic time

Charles F.A. Baynham, Rachel M. Godun^*, Jonathan M. Jones, Steven A. King, Peter B.R. Nisbet-Jones, Fred Baynes, Antoine Rolland, Patrick E.G. Baird, Kai Bongs, Patrick Gill, Helen S. Margolis

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The highly forbidden ²S_1/2 → ²F_7/2 electric octupole transition in ¹⁷¹Yb⁺ is a potential candidate for a redefinition of the SI second. We present a measurement of the absolute frequency of this optical transition, performed using a frequency link to International Atomic Time to provide traceability to the SI second. The ¹⁷¹Yb⁺ optical frequency standard was operated for 76% of a 25-day period, with the absolute frequency measured to be 642 121 496 772 645.14(26) Hz. The fractional uncertainty of 4.0 × 10⁻¹⁶ is comparable to that of the best previously reported measurement, which was made by a direct comparison to local caesium primary frequency standards.

Original language	English
Pages (from-to)	585-591
Number of pages	7
Journal	Journal of Modern Optics
Volume	65
Issue number	5-6
DOIs	https://doi.org/10.1080/09500340.2017.1384514
Publication status	Published - 30 Mar 2018

Bibliographical note

Funding Information:
This work was financially supported by the UK Department for Business, Energy and Industrial Strategy as part of the National Measurement System Programme; the European Metrology Research Programme (EMRP) project SIB55-ITOC; and the European Metrology Programme for Innovation and Research (EMPIR) project 15SIB03-OC18. This project has received funding from the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme. The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union.

Publisher Copyright:
© 2017 Informa UK Limited, trading as Taylor & Francis Group.

Keywords

Frequency metrology
international atomic time
optical frequency standards

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1080/09500340.2017.1384514

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Baynham, C. F. A., Godun, R. M., Jones, J. M., King, S. A., Nisbet-Jones, P. B. R., Baynes, F., Rolland, A., Baird, P. E. G., Bongs, K., Gill, P., & Margolis, H. S. (2018). Absolute frequency measurement of the optical clock transition in with an uncertainty of using a frequency link to international atomic time. Journal of Modern Optics, 65(5-6), 585-591. https://doi.org/10.1080/09500340.2017.1384514

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abstract = "The highly forbidden 2S1/2 → 2F7/2 electric octupole transition in 171Yb+ is a potential candidate for a redefinition of the SI second. We present a measurement of the absolute frequency of this optical transition, performed using a frequency link to International Atomic Time to provide traceability to the SI second. The 171Yb+ optical frequency standard was operated for 76% of a 25-day period, with the absolute frequency measured to be 642 121 496 772 645.14(26) Hz. The fractional uncertainty of 4.0 × 10−16 is comparable to that of the best previously reported measurement, which was made by a direct comparison to local caesium primary frequency standards.",

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Baynham, CFA, Godun, RM, Jones, JM, King, SA, Nisbet-Jones, PBR, Baynes, F, Rolland, A, Baird, PEG, Bongs, K, Gill, P & Margolis, HS 2018, 'Absolute frequency measurement of the optical clock transition in with an uncertainty of using a frequency link to international atomic time', Journal of Modern Optics, vol. 65, no. 5-6, pp. 585-591. https://doi.org/10.1080/09500340.2017.1384514

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AB - The highly forbidden 2S1/2 → 2F7/2 electric octupole transition in 171Yb+ is a potential candidate for a redefinition of the SI second. We present a measurement of the absolute frequency of this optical transition, performed using a frequency link to International Atomic Time to provide traceability to the SI second. The 171Yb+ optical frequency standard was operated for 76% of a 25-day period, with the absolute frequency measured to be 642 121 496 772 645.14(26) Hz. The fractional uncertainty of 4.0 × 10−16 is comparable to that of the best previously reported measurement, which was made by a direct comparison to local caesium primary frequency standards.

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Absolute frequency measurement of the optical clock transition in with an uncertainty of using a frequency link to international atomic time

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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