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We propose to deepen the understanding Quantum-Electro-Dynamics (QED) effects by investigating theoretically and experimentally various aspects of light matter interactions at the single-atom single-photon level. The work-horse of the experimental work will be a single Barium ion trapped and cooled in front of large aperture optical elements. We will demonstrate efficient coupling between a single ...

Trapped ions constitute one of the most promising systems for the demonstration of quantum computing protocols. By coupling trapped ions to a high-finesse optical cavity, we create a quantum interface between photons and atoms, allowing coherent transfer of quantum information between light and matter. We propose to demonstrate atom-photon entanglement, atom-atom entanglement between two ions with ...