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Un nouveau dispositif pour étudier la relaxation d'un système quantique à N corps

Abstract : This manuscript presents the first steps of a new ultracold atoms experiment using strontium 84. The aim of this experiment is to study the relaxation dynamics of quantum gases initially prepared in an out-of-equilibrium state. This experiment will include a quantum gas microscope, allowing us to measure spatial correlation functions in two-dimensionnal systems. The current state of the construction allows us to generate both magneto-optical trap of strontium: along its wide transition at 461 nm and its narrow transition at 689 nm. Concurrently with the experimental setup, we carried out works on a reconstruction algorithm required for the future data processing of the microscope images. This manuscript details experimental aspects, justifying their choices, and presents the current state of work on the reconstruction algorithm. There are still steps to complete the experimental setup: add a chamber where we will make the measurements to the vaccuum system, set up the quantum gaz microscope and all the required optics to transport the atomic clouds between two vaccuum chambers, to reach Bose-Einstein condensation and to confine the atoms in two-dimensionnal optical traps.
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Anaïs Molineri. Un nouveau dispositif pour étudier la relaxation d'un système quantique à N corps. Optique [physics.optics]. Université Paris Saclay (COmUE), 2019. Français. ⟨NNT : 2019SACLO013⟩. ⟨tel-02452462⟩

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