Micro-cavity exciton-polaritons in a honeycomb lattice and Berry phase
le mercredi 23 septembre 2020 à 11h00
Séminaire interne LPMMC
Personne à contacter : Vincent Rossetto ()
Lieu : Amphithéâtre, Maison des Magistères
Résumé : Exciton-polaritons in a honeycomb lattice are studied theoretically and numerically. Such a system was chosen for its tunable properties compared to electronic graphene. After explaining briefly the concept of exciton-polaritons, I will review the model without polarization, as done by Nicolas Victorin in his PhD thesis and introduce the Berry phase in that case. Afterwards, I will present the model that takes polarization into account, and acknowledge its effects on the dispersion relation (Dirac cones) and the Berry phase. At the end, I will talk about how the Berry phase can be measured by interferometry. In the future, this study aims to understand how the Berry phase is modified as interactions between polaritons are turned on.
Laboratoire de Physique et Modélisation des Milieux Condensés
