Collective strong coupling in a plasmonic nanocavity.
H Varguet, A A Díaz-Valles, S Guérin, H R Jauslin, G Colas des Francs
Author Information
H Varguet: Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, 9 Avenue Savary, BP 47870, 21078 Dijon Cedex, France.
A A Díaz-Valles: Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, 9 Avenue Savary, BP 47870, 21078 Dijon Cedex, France.
S Guérin: Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, 9 Avenue Savary, BP 47870, 21078 Dijon Cedex, France.
H R Jauslin: Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, 9 Avenue Savary, BP 47870, 21078 Dijon Cedex, France.
G Colas des Francs: Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS, Université Bourgogne Franche-Comté, 9 Avenue Savary, BP 47870, 21078 Dijon Cedex, France. ORCID
Quantum plasmonics extends cavity quantum electrodynamics (cQED) concepts to the nanoscale, benefiting from the strongly subwavelength confinement of the plasmon modes supported by metal nanostructures. In this work, we describe in detail collective strong coupling to a plasmonic nanocavity. Similarities and differences to cQED are emphasized. We notably observe that the Rabi splitting can strongly deviate from the standard NΔΩ law, where N is the number of emitters and ΔΩ is the Rabi splitting for a single emitter. In addition, we discuss the collective Lamb shift and the role of quantum corrections to the emission spectra.
