Nature Communications (Aug 2016)

A clock network for geodesy and fundamental science

  • 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. Koczwara,
  • S. Koke,
  • A. Kuhl,
  • F. Wiotte,
  • F. Meynadier,
  • E. Camisard,
  • M. Abgrall,
  • M. Lours,
  • T. Legero,
  • H. Schnatz,
  • U. Sterr,
  • H. Denker,
  • C. Chardonnet,
  • Y. Le Coq,
  • G. Santarelli,
  • A. Amy-Klein,
  • R. Le Targat,
  • J. Lodewyck,
  • O Lopez,
  • P.-E. Pottie

DOI
https://doi.org/10.1038/ncomms12443
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 7

Abstract

Read online

Comparing the frequency of two distant optical clocks will enable sensitive tests of fundamental physics. Here, the authors compare two strontium optical-lattice clocks 690 kilometres apart to a degree of accuracy that is limited only by the uncertainty of the individual clocks themselves.