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Study of two new configurations for Triple Photon Generation

Friday 26th March 2021 at 2 pm

Link visio : https://univ-grenoble-alpes-fr.zoom.us/j/95749084822?pwd=REVIM1FVT1g1WTBxejNlaTYyeXpIQT09

The talk will be in French.



The work carried out during this thesis is focused on the design and characterization of photon triplet generators by nonlinear optical processes. These triplets form a new state of light where the three photons can be entangled and lead to efficient quantum information protocols. The pioneering work of the team were focused on a birefringent phase-matching triplet generator based on a bulk crystal in the bi-stimulated regime. The current objective is to move towards the spontaneous regime. Two new technologies were thus considered: on the one hand, single-crystal ridge waveguides for birefringent phase-matching, and on the other hand, quasi-periodically poled crystals for a cascade of 2 quasi-phase matched processes. The complete nonlinear optical characterization of such devices has been performed.

Thesis Directors: Benoît Boulanger & Véronique Boutou (Institut Néel)