# Etudes des performances ultimes d'une horloge compacte à atomes froids - Optimisation de la stabilité court-terme

Abstract : Atomic frequency standards play a key role in fundamental physics and are also part of applications such as positioning satellites. Constraints on compacity are very demanding as well as specifications in terms of performances. The HORACE project allows, thanks to the use of cold atoms and because all interactions take place in the same area, to reach very good performances in a small physics package. This thesis gives the fundamental concepts of the HORACE project, the realization of the experimental set-up and the evaluation and optimization of short term frequency stability. Optimization of cooling sequence and reduction of experimental noises are main subjects of interest. A short term stability of $2.2~10^{-13}~\tau^{-1/2}$ is the main experimental result.
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Cited literature [120 references]

https://tel.archives-ouvertes.fr/tel-00419197
Contributor : François-Xavier Esnault <>
Submitted on : Tuesday, September 22, 2009 - 5:34:50 PM
Last modification on : Friday, April 5, 2019 - 8:12:01 PM
Document(s) archivé(s) le : Tuesday, June 15, 2010 - 10:11:34 PM

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• HAL Id : tel-00419197, version 1

### Citation

François-Xavier Esnault. Etudes des performances ultimes d'une horloge compacte à atomes froids - Optimisation de la stabilité court-terme. Physique Atomique [physics.atom-ph]. Université Pierre et Marie Curie - Paris VI, 2009. Français. ⟨tel-00419197⟩

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