Gradient polaritonic surface with space-variant switchable light-matter interactions in 2D moire superlattices.

ABSTRACT: Polaritons in two-dimensional (2D) materials provide unique opportunities for controlling light at nanoscales. Tailoring these polaritons via gradient polaritonic surfaces with space-variant response can enable versatile light-matter interaction platforms with advanced functionalities. However, experimental progress has been hampered by the optical losses and poor light confinement of conventionally used artificial nanostructures. Here, we demonstrate natural gradient polaritonic surfaces based on superlattices of solitons-localized structural deformations-in a prototypical moiré system, twisted bilayer graphene on boron nitride. We demonstrate on-off switching and continuous modulation of local polariton-soliton interactions, which results from marked modifications of topological and conv

SUBMITTER: Dai ZB 

PROVIDER: S-EPMC11641106 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature