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Determination of the absolute microwave frequency of laser-cooled \(^{171}\hbox {Yb}^+\)

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Abstract

\(^{171}\hbox {Yb}^+\) ions confined within a linear quadrupole trap were laser cooled to below 1 K. The microwave frequency of the hyperfine splitting of the ground state was continuously measured over 6 h. Frequency was corrected by evaluating the systematic shifts in each clock measurement. The absolute microwave frequency was determined as 12 642 812 118.468 2(4) Hz, in strong agreement with previously reported measurements.

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Acknowledgments

This work was mainly supported by the JST PRESTO program and partially by NICT. We thank M. Kumagai and T. Ido for critical advice on how to estimate statistical shift and uncertainty. We also thank H. Ito for providing us the data for the HM and UTC[NICT]. We would also like to express our gratitude to the reviewers, whose crucial comments helped improve the science and readability of the manuscript.

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Authors and Affiliations

  1. National Institute of Metrology Thailand (NIMT), 3/4-5, Moo 3, Klong 5, Klong Luang, Pathumthani, 12120, Thailand

    Piyaphat Phoonthong

  2. National Institute of Information and Communications Technology (NICT), 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, 184-8795, Japan

    Piyaphat Phoonthong, Michiaki Mizuno & Nobuyasu Shiga

  3. PRESTO, Japan Science and Technology (JST), 4-1-8 Honcho Kawaguchi, Saitama, 332-0012, Japan

    Kohta Kido & Nobuyasu Shiga

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  1. Piyaphat Phoonthong
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  2. Michiaki Mizuno
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  3. Kohta Kido
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  4. Nobuyasu Shiga
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Correspondence to Nobuyasu Shiga.

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Phoonthong, P., Mizuno, M., Kido, K. et al. Determination of the absolute microwave frequency of laser-cooled \(^{171}\hbox {Yb}^+\) . Appl. Phys. B 117, 673–680 (2014). https://doi.org/10.1007/s00340-014-5882-2

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  • DOI: https://doi.org/10.1007/s00340-014-5882-2

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