title: Single quantum dot coupled to a scanning optical antenna: a tunable superemitter.
abstract: The interaction of a single quantum dot with a bowtie antenna is demonstrated for visible light. The antenna is generated at the apex of a Si3N4 atomic force microscopy tip by focused ion beam milling. When scanned over the quantum dot, its photoluminescence is enhanced while its excited-state lifetime is decreased. Our observations demonstrate that the relaxation channels of a single quantum emitter can be controlled by coupling to an efficiently radiating metallic nanoantenna.
authors.affiliation: Nano-Optics group, National Center of Competence for Research in Nanoscale Science, Institute of Physics, University of Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland.
authors.forename: J N
authors.initials: JN
authors.lastname: Farahani
authors.forename: D W
authors.initials: DW
authors.lastname: Pohl
authors.forename: H-J
authors.initials: HJ
authors.lastname: Eisler
authors.forename: B
authors.initials: B
authors.lastname: Hecht