Brightening of a dark monolayer semiconductor via strong light-matter coupling in a cavity.

ABSTRACT: Engineering the properties of quantum materials via strong light-matter coupling is a compelling research direction with a multiplicity of modern applications. Those range from modifying charge transport in organic molecules, steering particle correlation and interactions, and even controlling chemical reactions. Here, we study the modification of the material properties via strong coupling and demonstrate an effective inversion of the excitonic band-ordering in a monolayer of WSe₂ with spin-forbidden, optically dark ground state. In our experiments, we harness the strong light-matter coupling between cavity photon and the high energy, spin-allowed bright exciton, and thus creating two bright polaritonic modes in the optical bandgap with the lower polariton mode pushed below the

SUBMITTER: Shan H 

PROVIDER: S-EPMC9151642 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature