Thèse présentée par Husain Hamed pour obtenir le grade de
Docteur en Physique de l’Université Sorbonne Paris Nord
I will present my experimental work on optical manipulation methods of the nuclear spin of strontium-87 atoms. This species has a spin 9/2 in the ground state. Relying on the tensor light shift effect, I demonstrate coherent manipulations over several (more than two) Zeeman sub levels, beyond global spin precession. These would be useful for measurements schemes in quantum simulation experiments with large spin atoms. This work also highlights a perspective for Strontium atoms to be used as qudits (quantum objects with more that two states) in quantum technologies. To illustrate that, I realize two interferometric experiments that exploit a space of four Zeeman sublevels. The first scheme paralellizes the sensing of multiple fields acting on the atoms. The second scheme simultaneously measures two non-commuting collective atomic variables in an ensemble of two-level objects.
Membre de Jury :
M. Alexandre GAUGUET, Université Paul Sabatier, rapporteur
M. Patrick CHEINET, Université Paris-Sud 11 – Laboratoire Aimé Cotton, rapporteur
Mrs. Mathilde HUGBART, Institut de Physique de Nice – Université Côte d’Azur, examinatrice
M. Sebastien BIZE, Observatoire de Paris – PSL, examinateur
M. Gabriel DUTIER, Université Sorbonne Paris Nord – Laboratoire de Physique des Lasers, examinateur
M. Bruno Laburthe-Tolra, université Sorbonne Paris Nord, co-directrice de thèse
M. Martin Robert de Saint Vincent, université Sorbonne Paris Nord, co-directeur de thèse
Mot-clés : quantum simulation, quantum magnetism, ultracold atoms, Fermi gas, quantum computing
Soutenance : Le 10 Decembre 2024 à 14h15