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 $2.2~10^{-13}~au^{-1/2}$ is the main experimental result.
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机译：原子频率标准在基础物理学中起着关键作用，并且也是定位卫星等应用程序的一部分。兼容性方面的限制以及性能方面的要求非常严格。由于使用了冷原子，并且所有相互作用都发生在同一区域，因此HORACE项目允许在一个小的物理包装中达到非常好的性能。本文给出了HORACE项目的基本概念，实验装置的实现以及短期频率稳定性的评估和优化。冷却顺序的优化和实验噪声的减少是主要关注的主题。主要的实验结果是$ 2.2〜10 ^ {-13}〜 tau ^ {-1/2} $的短期稳定性。
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