Strong coupling of single quantum dots with low-refractive-index/high-refractive-index materials at room temperature.

ABSTRACT: Strong coupling between a cavity and transition dipole moments in emitters leads to vacuum Rabi splitting. Researchers have not reported strong coupling between a single emitter and a dielectric cavity at room temperature until now. In this study, we investigated the photoluminescence (PL) spectra of colloidal quantum dots on the surface of a SiO2/Si material at various collection angles at room temperature. We measured the corresponding reflection spectra for the SiO2/Si material and compared them with the PL spectra. We observed PL spectral splitting and regarded it as strong coupling between colloidal quantum dots and the SiO2/Si material. Upper polaritons and lower polaritons exhibited anticrossing behavior. We observed Rabi splitting from single-photon emission in the dielectric cavit

SUBMITTER: Xu X 

PROVIDER: S-EPMC7679155 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature