title: Mapping and quantifying electric and magnetic dipole luminescence at the nanoscale.
abstract: We report on an experimental technique to quantify the relative importance of electric and magnetic dipole luminescence from a single nanosource in structured environments. By attaching a Eu^{3+}-doped nanocrystal to a near-field scanning optical microscope tip, we map the branching ratios associated with two electric dipole and one magnetic dipole transitions in three dimensions on a gold stripe. The relative weights of the electric and magnetic radiative local density of states can be recovered quantitatively, based on a multilevel model. This paves the way towards the full electric and magnetic characterization of nanostructures for the control of single emitter luminescence.
authors.affiliation: Laboratoire de Physique et d'Etude des Matériaux, ESPCI Paristech, CNRS, 75005 Paris, France.
authors.forename: L
authors.initials: L
authors.lastname: Aigouy
authors.affiliation: Department of Mathematics, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: A
authors.initials: A
authors.lastname: Cazé
authors.affiliation: PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France and Université Pierre et Marie Curie, 75005 Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Gredin
authors.affiliation: PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France.
authors.forename: M
authors.initials: M
authors.lastname: Mortier
authors.affiliation: ESPCI ParisTech, PSL Research University, CNRS, Institut Langevin, 1 rue Jussieu, 75005 Paris, France.
authors.forename: R
authors.initials: R
authors.lastname: Carminati