245 citations · 529 across the 7 of their papers we have counts for
7 papers
Testing local position and fundamental constant invariance due to periodic gravitation and boost using long-term comparison of the SYRTE atomic fountains and H-masers
M. E. Tobar, P. L. Stanwix, J. J. McFerran +8
The frequencies of three separate Cs fountain clocks and one Rb fountain clock have been compared to various hydrogen masers to search for periodic changes correlated with the chan…
Demonstration of a Dual Alkali Rb/Cs Atomic Fountain Clock
J. Guéna, P. Rosenbusch, Ph. Laurent +7
We report the operation of a dual Rb/Cs atomic fountain clock. 133Cs and 87Rb atoms are cooled, launched, and detected simultaneously in LNE-SYRTE's FO2 double fountain. The dual c…
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…
Feshbach resonances in Cesium at Ultra-low Static Magnetic Fields
D. J. Papoular, S. Bize, A. Clairon +3
We have observed Feshbach resonances for 133Cs atoms in two different hyperfine states at ultra-low static magnetic fields by using an atomic fountain clock. The extreme sensitivit…
Long Term Operation and Performance of Cryogenic Sapphire Oscillators
M. E. Tobar, E. N. Ivanov, C. R. Locke +12
Cryogenic Sapphire Oscillators (CSO) developed at UWA have now been in operation around the world continuously for many years. Such oscillators, due to their excellent spectral pur…
Testing Lorentz Invariance using Zeeman Transitions in Atomic Fountains
Peter Wolf, Fréderic Chapelet, Sebastien Bize +1
Lorentz Invariance (LI) is the founding postulate of Einstein's 1905 theory of relativity, and therefore at the heart of all accepted theories of physics. It characterizes the inva…