Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock

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

Authors

  • S. Dörscher
  • N. Huntemann
  • R. Schwarz
  • R. Lange
  • E. Benkler
  • B. Lipphardt
  • U. Sterr
  • E. Peik
  • C. Lisdat

External Research Organisations

  • Physikalisch-Technische Bundesanstalt PTB
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Details

Original languageEnglish
Article number015005
JournalMETROLOGIA
Volume58
Issue number1
Publication statusPublished - Feb 2021
Externally publishedYes

Abstract

We report direct measurements of the frequency ratio of the 642 THz 2S1/2(F = 0)-2F7/2(F = 3) electric octupole transition in 171Yb+ and the 429 THz 1S0 -3P0 transition in 87Sr. A series of 107 measurements has been performed at the Physikalisch-Technische Bundesanstalt between December 2012 and October 2019. Long-term variations of the ratio are larger than expected from the individual measurement uncertainties of few 10−17. The cause of these variations remains unknown. Even taking these into account, we find a fractional uncertainty of the frequency ratio of 2.5 × 10−17, which improves upon previous knowledge by one order of magnitude. The average frequency ratio is νYb+ /νSr = 1.495 991 618 544 900 537(38). This represents one of the most accurate measurements between two different atomic species to date.

Keywords

    Frequency ratio, Optical clocks, Strontium lattice clock, Ytterbium ion clock

ASJC Scopus subject areas

Cite this

Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock. / Dörscher, S.; Huntemann, N.; Schwarz, R. et al.
In: METROLOGIA, Vol. 58, No. 1, 015005, 02.2021.

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

Dörscher, S, Huntemann, N, Schwarz, R, Lange, R, Benkler, E, Lipphardt, B, Sterr, U, Peik, E & Lisdat, C 2021, 'Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock', METROLOGIA, vol. 58, no. 1, 015005. https://doi.org/10.1088/1681-7575/abc86f
Dörscher, S., Huntemann, N., Schwarz, R., Lange, R., Benkler, E., Lipphardt, B., Sterr, U., Peik, E., & Lisdat, C. (2021). Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock. METROLOGIA, 58(1), Article 015005. https://doi.org/10.1088/1681-7575/abc86f
Dörscher S, Huntemann N, Schwarz R, Lange R, Benkler E, Lipphardt B et al. Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock. METROLOGIA. 2021 Feb;58(1):015005. doi: 10.1088/1681-7575/abc86f
Dörscher, S. ; Huntemann, N. ; Schwarz, R. et al. / Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock. In: METROLOGIA. 2021 ; Vol. 58, No. 1.
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title = "Optical frequency ratio of a 171Yb+ single-ion clock and a 87Sr lattice clock",
abstract = "We report direct measurements of the frequency ratio of the 642 THz 2S1/2(F = 0)-2F7/2(F = 3) electric octupole transition in 171Yb+ and the 429 THz 1S0 -3P0 transition in 87Sr. A series of 107 measurements has been performed at the Physikalisch-Technische Bundesanstalt between December 2012 and October 2019. Long-term variations of the ratio are larger than expected from the individual measurement uncertainties of few 10−17. The cause of these variations remains unknown. Even taking these into account, we find a fractional uncertainty of the frequency ratio of 2.5 × 10−17, which improves upon previous knowledge by one order of magnitude. The average frequency ratio is νYb+ /νSr = 1.495 991 618 544 900 537(38). This represents one of the most accurate measurements between two different atomic species to date.",
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AU - Dörscher, S.

AU - Huntemann, N.

AU - Schwarz, R.

AU - Lange, R.

AU - Benkler, E.

AU - Lipphardt, B.

AU - Sterr, U.

AU - Peik, E.

AU - Lisdat, C.

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N2 - We report direct measurements of the frequency ratio of the 642 THz 2S1/2(F = 0)-2F7/2(F = 3) electric octupole transition in 171Yb+ and the 429 THz 1S0 -3P0 transition in 87Sr. A series of 107 measurements has been performed at the Physikalisch-Technische Bundesanstalt between December 2012 and October 2019. Long-term variations of the ratio are larger than expected from the individual measurement uncertainties of few 10−17. The cause of these variations remains unknown. Even taking these into account, we find a fractional uncertainty of the frequency ratio of 2.5 × 10−17, which improves upon previous knowledge by one order of magnitude. The average frequency ratio is νYb+ /νSr = 1.495 991 618 544 900 537(38). This represents one of the most accurate measurements between two different atomic species to date.

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