P
P. Laurent
Publications - 37
Citations - 2333
P. Laurent is an academic researcher. The author has contributed to research in topics: Atomic clock & Atomic fountain. The author has an hindex of 17, co-authored 37 publications receiving 2242 citations.
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Journal ArticleDOI
Measurement of the Hydrogen 1 S - 2 S Transition Frequency by Phase Coherent Comparison with a Microwave Cesium Fountain Clock
M. Niering,Ronald Holzwarth,J. Reichert,P. V. Pokasov,Th. Udem,Martin Weitz,Theodor W. Hänsch,Pierre Lemonde,Giorgio Santarelli,Michel Abgrall,P. Laurent,Christophe Salomon,André Clairon +12 more
TL;DR: An absolute frequency measurement of the hydrogen 1S-2S two-photon transition in a cold atomic beam with an accuracy of 1.8 parts in 10(14) Hz is reported on.
Journal ArticleDOI
New limits on the drift of fundamental constants from laboratory measurements.
M. Fischer,Nikolai N. Kolachevsky,Marcus Zimmermann,Ronald Holzwarth,Thomas Udem,Theodor W. Hänsch,Michel Abgrall,J. Grünert,I. Maksimovic,Sébastien Bize,H. Marion,F. Pereira Dos Santos,Pierre Lemonde,Giorgio Santarelli,P. Laurent,André Clairon,Christophe Salomon,Martin Haas,Ulrich D. Jentschura,Christoph H. Keitel +19 more
TL;DR: The absolute 1S-2S transition frequency nu(H) in atomic hydrogen is remeasured and separate limits on alpha/alpha=(-0.9+/-2.9) x 10(-15) yr(-1) and the fractional time variation of the ratio of Rb and Cs nuclear magnetic moments mu(Rb)/mu(Cs) equal to (-0.5+/-1.7) provides information on the temporal behavior of the constant of strong interaction.
Journal ArticleDOI
Experimental realization of an optical second with strontium lattice clocks.
R. Le Targat,Luca Lorini,Y. Le Coq,Michal Zawada,J. Guéna,Michel Abgrall,Mikhail Gurov,Peter Rosenbusch,D. Rovera,B. Nagorny,R. Gartman,Philip G. Westergaard,Michael E. Tobar,M. Lours,Giorgio Santarelli,André Clairon,S. Bize,P. Laurent,Pierre Lemonde,Jérôme Lodewyck +19 more
TL;DR: An important step in the direction of a possible new definition of the second is presented, and two state-of-the-art strontium optical lattice clocks are proven to agree within their accuracy budget, with a total uncertainty of 1.5 × 10(-16).
Journal ArticleDOI
Cold atom clocks and applications
Sébastien Bize,P. Laurent,Michel Abgrall,H. Marion,I. Maksimovic,Luigi Cacciapuoti,J. Grünert,C. Vian,F. Pereira Dos Santos,Peter Rosenbusch,Pierre Lemonde,Giorgio Santarelli,Patrick D. Wolf,André Clairon,Andre N. Luiten,Michael E. Tobar,Christophe Salomon +16 more
TL;DR: In this paper, the authors describe advances in microwave frequency standards using laser-cooled atoms at BNM-SYRTE, which lead to a frequency stability of 2 × 10−16 at 50'000 s for primary standards.
Journal ArticleDOI
Cold atom Clocks and Applications
Sébastien Bize,P. Laurent,Michel Abgrall,H. Marion,I. Maksimovic,Luigi Cacciapuoti,J. Gruenert,C. Vian,F. Pereira Dos Santos,Peter Rosenbusch,Pierre Lemonde,Giorgio Santarelli,Patrick D. Wolf,André Clairon,Andre N. Luiten,Michael E. Tobar,Christophe Salomon +16 more
TL;DR: In this article, the authors describe advances in microwave frequency standards using laser-cooled atoms at BNM-SYRTE, which lead to a frequency stability of 2.2