title: Spectral tunability of a plasmonic antenna with a dielectric nanocrystal.
abstract: We show that the positioning of a nanometer length scale dielectric object, such as a diamond nanocrystal, in the vicinity of a gold bowtie nanoantenna can be used to tune the plasmonic mode spectrum on the order of a linewidth. We further show that the intrinsic luminescence of gold enhanced in the presence of nanometer-scale roughness couples efficiently to the plasmon mode and carries the same polarization anisotropy. Our findings have direct implications for cavity quantum electrodynamics related applications of hybrid antenna-emitter complexes.
authors.affiliation: Cavendish Laboratory, University of Cambridge, Cambridge, UK. ya236@cam.ac.uk
authors.forename: Yury
authors.initials: Y
authors.lastname: Alaverdyan
authors.forename: Nick
authors.initials: N
authors.lastname: Vamivakas
authors.forename: Joshua
authors.initials: J
authors.lastname: Barnes
authors.forename: Claire
authors.initials: C
authors.lastname: Lebouteiller
authors.forename: Jack
authors.initials: J
authors.lastname: Hare
authors.forename: Mete
authors.initials: M
authors.lastname: Atatüre