Magneto-Optical Chirality in a Coherently Coupled Exciton-Plasmon System.

ABSTRACT: Chirality is a fundamental asymmetry phenomenon, with chiral optical elements exhibiting asymmetric response in reflection or absorption of circularly polarized light. Recent realizations of such elements include nanoplasmonic systems with broken-mirror symmetry and polarization-contrasting optical absorption known as circular dichroism. An alternative route to circular dichroism is provided by spin-valley polarized excitons in atomically thin semiconductors. In the presence of magnetic fields, they exhibit an imbalanced coupling to circularly polarized photons and thus circular dichroism. Here, we demonstrate that polarization-contrasting optical transitions associated with excitons in monolayer WSe₂ can be transferred to proximal plasmonic nanodisks by coherent coupling. The c

SUBMITTER: Vadia S 

PROVIDER: S-EPMC9881169 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature