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within S. Bize Remove this filter Measurement Science and Instrumentation Remove this filter

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    Chapter and Conference Paper

    Real-Time Realization of UTC at Observatoire de Paris

    UTC(OP), the French national realization of the international Coordinated Universal Time, was redesigned and rebuilt. The first step was the implementation in October 2012 of a new algorithm based on an H-mase...

    G. D. Rovera, S. Bize, B. Chupin, J. Guéna, Ph. Laurent… in The Science of Time 2016 (2017)

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    Chapter

    Cold Atom Clocks, Precision Oscillators and Fundamental Tests

    We describe two experimental tests of the Equivalence Principle that are based on frequency measurements between precision oscillators and/or highly accurate atomic frequency standards. Based on comparisons be...

    S. Bize, P. Wolf, M. Abgrall, L. Cacciapuoti… in Astrophysics, Clocks and Fundamental Const… (2004)

  3. No Access

    Chapter

    Precision Spectroscopy of Atomic Hydrogen and Variations of Fundamental Constants

    In 2003 we have measured the absolute frequency of the (1S, F=1, mF=± 1)→ (2S, F′=1, mF′=± 1) two-photon transition in atomic hydrogen. By comparison with the earlier measurement in 1999 we can set an upper limit...

    M. Fischer, N. Kolachevsky, M. Zimmermann… in Astrophysics, Clocks and Fundamental Const… (2004)