title: Coherent interaction of light with a metallic structure coupled to a single quantum emitter: from superabsorption to cloaking.
abstract: We provide a general theoretical platform based on quantized radiation in absorptive and inhomogeneous media for investigating the coherent interaction of light with material structures in the immediate vicinity of quantum emitters. In the case of a very small metallic cluster, we demonstrate extreme regimes where a single emitter can either counteract or enhance particle absorption by 3 orders of magnitude. For larger structures, we show that an emitter can eliminate both scattering and absorption and cloak a plasmonic antenna. We provide physical interpretations of our results and discuss their applications in active metamaterials and quantum plasmonics.
authors.affiliation: Max Planck Institute for the Science of Light and Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91058 Erlangen, Germany.
authors.forename: Xue-Wen
authors.initials: XW
authors.lastname: Chen
authors.affiliation: Max Planck Institute for the Science of Light and Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), D-91058 Erlangen, Germany.
authors.forename: Vahid
authors.initials: V
authors.lastname: Sandoghdar
authors.affiliation: National Institute of Optics (INO-CNR) and European Laboratory for Nonlinear Spectroscopy (LENS), via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Agio