title: Controllable emission of a dipolar source coupled with a magneto-dielectric resonant subwavelength scatterer.
abstract: We demonstrate experimentally and theoretically that a local excitation of a single scatterer of relative dielectric permittivity ε = 6 permits to excite broad dipolar and quadrupolar electric and magnetic resonances that shape the emission pattern in an unprecedented way. By suitably positioning the feed with respect to the sphere at a λ/3 distance, this compact antenna is able to spectrally sort the electromagnetic emission either in the forward or in the backward direction, together with a high gain in directivity. Materials with ε = 6 can be found in the whole spectrum of frequencies promising Mie antennas to become an enabling technology in numbers of applications, ranging from quantum single photon sources to telecommunications.
authors.affiliation: CNRS, Aix-Marseille Université, Centrale Marseille, Institut Fresnel, UMR 7249, Campus de St Jérôme, 13397 Marseille, France.
authors.forename: Brice
authors.initials: B
authors.lastname: Rolly
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Geffrin
authors.forename: Redha
authors.initials: R
authors.lastname: Abdeddaim
authors.forename: Brian
authors.initials: B
authors.lastname: Stout
authors.forename: Nicolas
authors.initials: N
authors.lastname: Bonod