title: Control of strong light-matter coupling using the capacitance of metamaterial nanocavities.
abstract: Metallic nanocavities with deep subwavelength mode volumes can lead to dramatic changes in the behavior of emitters placed in their vicinity. This collocation and interaction often leads to strong coupling. Here, we present for the first time experimental evidence that the Rabi splitting is directly proportional to the electrostatic capacitance associated with the metallic nanocavity. The system analyzed consists of different metamaterial geometries with the same resonance wavelength coupled to intersubband transitions in quantum wells.
authors.affiliation: Center for Integrated Nanotechnologies (CINT), Sandia National Laboratories , P.O. Box 5800, Albuquerque, New Mexico 87185, United States.
authors.forename: Alexander
authors.initials: A
authors.lastname: Benz
authors.forename: Salvatore
authors.initials: S
authors.lastname: Campione
authors.forename: John F
authors.initials: JF
authors.lastname: Klem
authors.forename: Michael B
authors.initials: MB
authors.lastname: Sinclair
authors.forename: Igal
authors.initials: I
authors.lastname: Brener
keywords: Metamaterial; intersubband transitions; mid-infrared; nanocavity; plasmonics; strong light−matter interaction