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A clock network for geodesy and fundamental science

Author

Listed:
  • C. Lisdat

    (Physikalisch-Technische Bundesanstalt)

  • G. Grosche

    (Physikalisch-Technische Bundesanstalt)

  • N. Quintin

    (Laboratoire de Physique des Lasers, Université Paris 13, Sorbonne Paris Cité, CNRS)

  • C. Shi

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • S.M.F. Raupach

    (Physikalisch-Technische Bundesanstalt)

  • C. Grebing

    (Physikalisch-Technische Bundesanstalt)

  • D. Nicolodi

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • F. Stefani

    (Laboratoire de Physique des Lasers, Université Paris 13, Sorbonne Paris Cité, CNRS
    LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • A. Al-Masoudi

    (Physikalisch-Technische Bundesanstalt)

  • S. Dörscher

    (Physikalisch-Technische Bundesanstalt)

  • S. Häfner

    (Physikalisch-Technische Bundesanstalt)

  • J.-L. Robyr

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • N. Chiodo

    (Laboratoire de Physique des Lasers, Université Paris 13, Sorbonne Paris Cité, CNRS)

  • S. Bilicki

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • E. Bookjans

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • A. Koczwara

    (Physikalisch-Technische Bundesanstalt)

  • S. Koke

    (Physikalisch-Technische Bundesanstalt)

  • A. Kuhl

    (Physikalisch-Technische Bundesanstalt)

  • F. Wiotte

    (Laboratoire de Physique des Lasers, Université Paris 13, Sorbonne Paris Cité, CNRS)

  • F. Meynadier

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • E. Camisard

    (Réseau National de télécommunications pour la Technologie, l′Enseignement et la Recherche)

  • M. Abgrall

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • M. Lours

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • T. Legero

    (Physikalisch-Technische Bundesanstalt)

  • H. Schnatz

    (Physikalisch-Technische Bundesanstalt)

  • U. Sterr

    (Physikalisch-Technische Bundesanstalt)

  • H. Denker

    (Institut für Erdmessung, Leibniz Universität Hannover)

  • C. Chardonnet

    (Laboratoire de Physique des Lasers, Université Paris 13, Sorbonne Paris Cité, CNRS)

  • Y. Le Coq

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • G. Santarelli

    (Laboratoire Photonique, Numérique et Nanosciences, UMR 5298 Institut d’Optique Graduate School, CNRS, and Université de Bordeaux)

  • A. Amy-Klein

    (Laboratoire de Physique des Lasers, Université Paris 13, Sorbonne Paris Cité, CNRS)

  • R. Le Targat

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • J. Lodewyck

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

  • O Lopez

    (Laboratoire de Physique des Lasers, Université Paris 13, Sorbonne Paris Cité, CNRS)

  • P.-E. Pottie

    (LNE-SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC University of Paris 06)

Abstract

Leveraging the unrivalled performance of optical clocks as key tools for geo-science, for astronomy and for fundamental physics beyond the standard model requires comparing the frequency of distant optical clocks faithfully. Here, we report on the comparison and agreement of two strontium optical clocks at an uncertainty of 5 × 10−17 via a newly established phase-coherent frequency link connecting Paris and Braunschweig using 1,415 km of telecom fibre. The remote comparison is limited only by the instability and uncertainty of the strontium lattice clocks themselves, with negligible contributions from the optical frequency transfer. A fractional precision of 3 × 10−17 is reached after only 1,000 s averaging time, which is already 10 times better and more than four orders of magnitude faster than any previous long-distance clock comparison. The capability of performing high resolution international clock comparisons paves the way for a redefinition of the unit of time and an all-optical dissemination of the SI-second.

Suggested Citation

  • C. Lisdat & G. Grosche & N. Quintin & C. Shi & S.M.F. Raupach & C. Grebing & D. Nicolodi & F. Stefani & A. Al-Masoudi & S. Dörscher & S. Häfner & J.-L. Robyr & N. Chiodo & S. Bilicki & E. Bookjans & A, 2016. "A clock network for geodesy and fundamental science," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12443
    DOI: 10.1038/ncomms12443
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