Engineering topology in graphene with chiral cavities

This work elucidates how the quantum nature of photons affects the topology of the correlated photoelectron hybrid wave function. The authors reveal a fundamental relation between the Berry phase and the properties of exchanged photons with matter at light-matter hybridization points in the Brillouin zone. Furthermore, the cavity-mediated electronic interactions in graphene valleys are analytically derived for the case where the material is subject to enhanced vacuum fluctuations in a chiral cavity.