432 citations · 2.5k across the 13 of their papers we have counts for
10 papers · 1 filter
Atomic fountains and optical clocks at SYRTE: status and perspectives
M. Abgrall, B. Chupin, L. De Sarlo +9
In this article, we report on the work done with the LNE-SYRTE atomic clock ensemble during the last 10 years. We cover progress made in atomic fountains and in their application t…
PHARAO Laser Source Flight Model: Design and Performances
Thomas Lévèque, Benoit Faure, François-Xavier Esnault +11
In this paper, we describe the design and the main performances of the PHARAO laser source flight model. PHARAO is a laser cooled cesium clock specially designed for operation in s…
Experimenting an optical second with strontium lattice clocks
R. Le Targat, L. Lorini, Y. Le Coq +17
Progress in realizing the SI second had multiple technological impacts and enabled to further constraint theoretical models in fundamental physics. Caesium microwave fountains, rea…
Improved tests of Local Position Invariance using 87Rb and 133Cs fountains
Jocelyne Guéna, Michel Abgrall, Daniele Rovera +5
We report tests of local position invariance based on measurements of the ratio of the ground state hyperfine frequencies of 133Cs and 87Rb in laser-cooled atomic fountain clocks.…
Progress in Atomic Fountains at LNE-SYRTE
Jocelyne Guéna, Michel Abgrall, Daniele Rovera +10
We give an overview of the work done with the Laboratoire National de Métrologie et d'Essais-Systèmes de Référence Temps-Espace (LNE-SYRTE) fountain ensemble during the last five y…
Improved Measurement of the Hydrogen 1S - 2S Transition Frequency
Christian G. Parthey, Arthur Matveev, Janis Alnis +14
We have measured the 1S - 2S transition frequency in atomic hydrogen via two photon spectroscopy on a 5.8 K atomic beam. We obtain Hz for t…