Collective strong coupling in a plasmonic nanocavity
H. Varguet, A. A. Díaz-Valles, S. Guérin, H. R. Jauslin, G. Colas des Francs
Abstract
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 NeΔΩ1 law, where Ne is the number of emitters and ΔΩ1 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.
Topics & Concepts
PlasmonPhysicsCavity quantum electrodynamicsCoupling (piping)QuantumQuasiparticleQuantum mechanicsCondensed matter physicsQuantum dotSpontaneous emissionRabi frequencyRabi cycleQuantum electrodynamicsPurcell effectResonant cavityQuantum opticsSurface plasmonQuantum decoherencePolaritonLamb shiftCoupling strengthPlasmonic and Surface Plasmon ResearchStrong Light-Matter InteractionsGold and Silver Nanoparticles Synthesis and Applications