Fig. 1: Strong coupling between plasmonic nanocavity and quantum dots (QDs).
From: Robust consistent single quantum dot strong coupling in plasmonic nanocavities
a Schematic and (b), dark-field image of monolayer QDs integrated into nanoparticle-on-mirror (NPoM) nanocavities. c Dark-field and d, TEM images of QD monolayer on (c) Si and (d) TEM grid. Red color in (c) is photoluminescence of QDs under illumination. e Exciton (QD) and plasmon (cavity) hybridization forms polaritons in strong coupling regime. f Average scattering spectra of >800 NPoMs sorted into bins which all show clear energy splitting of coupled modes. Histogram (black dashed) and average spectra are sorted according to energy of lower (ω−) and upper (ω+) polaritons. g Typical photoluminescence spectrum (red) of monolayer QD film in (c), with spectral distribution of exciton peak at different locations (expanded in inset).
