Mapping of multiple plexcitons in disk supershape hybrid nanoparticles

Here, we reported the excitation of multiple plexcitons in disk supershape hybrid nanoparticles, both as core-shell and bilayer structures, using the finite difference time domain method. The coupling rates in the Hamiltonian of the multi-oscillators were obtained using a combination of the genetic algorithm and particle swarm optimization for the hybridization of plasmons and excitons. We found that by engineering the morphology of the hybrid nanoparticles, a range of exciton numbers, from few to many, can be achieved in the strong coupling regime. This study has potential applications in photonic and electronic devices based on single- and multi-qubit quantum information processing.