Atomes de Rydberg en interaction : des nuages denses d'atomes de Rydberg à la simulation quantique avec des atomes circulaires

Abstract : Interacting many-body quantum systems are at the heart of contemporary research in quantum physics. The understanding of such systems is crucial to the development of condensed-matter physics. Many research efforts aim at building a "quantum simulator" : a platform which allows to model a hard-to-access quantum system with a more controllable one. Ensembles of Rydberg atoms, thanks to their strong dipolar interactions, make for an excellent system to study many-body quantum physics. We present here a study of the excitation of a dense cloud of interacting Rydberg atoms. This study was conducted on an experimental setup mixing on-chip cold atoms techniques with Rydberg atoms manipulation techniques. The result of this study leads us to make a full-fledged proposal for the realisation of a quantum simulator, based on trapped circular Rydberg atoms. The proposed simulator is particularly promising due to its flexibility and to the long simulation times for which it would allow. We conclude this manuscript with a detailed description of the first experimental step towards building such a simulator : the on-chip excitation of circular Rydberg atoms.
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Tigrane Cantat-Moltrecht. Atomes de Rydberg en interaction : des nuages denses d'atomes de Rydberg à la simulation quantique avec des atomes circulaires. Physique Quantique [quant-ph]. Ecole Normale Supérieure, Paris; PSL Research University, 2018. Français. ⟨tel-01714526v1⟩

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