title: Strong coupling of two interacting excitons confined in a nanocavity-quantum dot system.
abstract: We present a study of the strong coupling between radiation and matter, considering a system of two quantum dots, which are in mutual interaction and interact with a single mode of light confined in a semiconductor nanocavity. We take into account dissipative mechanisms such as the escape of the cavity photons, decay of the quantum dot excitons by spontaneous emission, and independent exciton pumping. It is shown that the mutual interaction between the dots can be measured off-resonance only if the strong coupling condition is reached. Using the quantum regression theorem, a reasonable definition of the dynamical coupling regimes is introduced in terms of the complex Rabi frequency. Finally, the emission spectrum for relevant conditions is presented and compared with the above definition, demonstrating that the interaction between the excitons does not affect the strong coupling.
authors.affiliation: Instituto de Física, Universidad de Antioquia, AA 1226 Medellín, Colombia. pcardenas@fisica.udea.edu.co
authors.forename: Paulo C
authors.initials: PC
authors.lastname: Cárdenas
authors.forename: Nicolás
authors.initials: N
authors.lastname: Quesada
authors.forename: Herbert
authors.initials: H
authors.lastname: Vinck-Posada
authors.forename: Boris A
authors.initials: BA
authors.lastname: Rodríguez