Piégeage et refroidissement d'ions strontium dans des pièges micro-fabriqués

TL;DRAbstract

This thesis is in the general field of quantum information, which proposes to realize infomation processing protocols using laws of quantum mechanics. This work is focused on one of the most promising systems: single ions confined in a radio-frequency trap (Paul trap) and laser-cooled. The purpose of this thesis is to realize the tools (measuring systems and devices) to characterize the "anomalous heating", a phenomenon not fully understood to date, limiting the coherence of ions trapped in planar linear Paul traps.After an introduction to quantum information, principles of trapping and cooling are explained. Then comes a description of improvements realized on an experimental system of ion trapping and cooling. The modeling of trapping electric fields to control the traps is described. A first realisation of trapping in a planar linear Paul trap is described. This realisation allowed for the obtaining planar Coulomb crystals of large size (N> 150). The protocol for producing micro-fab

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