Fine-tuning biexcitons-plasmon coherent states in a single nanocavity.

ABSTRACT: A tunable plexcitonic material that sustains multimode hybridization is highly desirable, which is vital for advanced quantum devices. However, the research about regulations of biexcitons-plasmon coherent states has rarely been reported. Here we apply single-nanoparticle scattering spectroscopy correlative with SEM imaging to identify biexcitons-plasmon interaction in a metal-semiconductor hybrid structure composed of a single Au@Ag nanoparticle, J-aggregates molecules and tungsten disulfide (WS₂) monolayer. The mode competition within the localized plasmonic hotspots (∼240 nm³) is revealed by continuously regulating the J-aggregates spacer. Two distinct anticrossings are observed at both excitons resonances, and large double Rabi splittings (137 meV and 124 meV) are

SUBMITTER: Liang K 

PROVIDER: S-EPMC11501157 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature