In this publication, a model to describe light-matter coupling in plasmonic core-shell nanocavities is presented and results are compared to measurements. The model brings the classical electromagnetic description together with a two-level system description, derived from Bloch equations.
F. Stete, et al. Optical Spectra of Plasmon–Exciton Core–Shell Nanoparticles: A Heuristic Quantum Approach. ACS Photonics , 10, 2511–2520 (2023).