Impact of nonradiative line broadening on emission in photonic and plasmonic cavities

Pavel Ginzburg*, Alexey V. Krasavin, David Richards, Anatoly V. Zayats

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A light-matter interaction modified by the material environment is one of the central topics in quantum electrodynamics. While a strong coupling between a single emitter and a cavity and the Markovian (exponential) relaxation regime are most straightforwardly covered by theory, real physical systems that include also various line broadening effects may possess a much more complicated behavior. Here we propose a theoretical framework to account for nonradiative interaction effects in emission in photonic and plasmonic cavities. The quantum electrodynamics model formulated via a stochastic Hamiltonian approach has been developed with nonradiative line broadening introduced via the Kubo oscillator model. The impact of competing radiative and nonradiative processes on the emitter dynamics has been studied, showing that nonradiative relaxations, having significant impact on processes in high-Q photonic cavities, are much less influential in the plasmonic regime. The developed theoretical framework is not restricted to the emitter in a cavity example, but represents a general tool for multiple stochastic Hamiltonian evolution, important for various types of interactions where either classical or quantum noise is present.

Original languageEnglish
Article number043836
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume90
Issue number4
DOIs
StatePublished - 20 Oct 2014
Externally publishedYes

Funding

FundersFunder number
Engineering and Physical Sciences Research Council
Seventh Framework Programme321268
Engineering and Physical Sciences Research CouncilEP/K007793/1, EP/G029806/1, EP/J018457/1, EP/H000917/2

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