title: Crucial role of the emitter-particle distance on the directivity of optical antennas.
abstract: We demonstrate that the reflecting properties of a single particle nanoantenna can be extremely sensitive to its distance from a quantum emitter at frequencies lower than the plasmon resonance. The phenomenon is shown to arise from rapid phase variations of the emitter field at short distances associated with a phase of the antenna particle polarizability lower than π/4.
authors: Institut Fresnel, CNRS UMR 6133, Aix-Marseille Université, Ecole Centrale Marseille Campus de Saint-Jérôme, Marseille, France.
authors: Brice
authors: B
authors: Rolly
authors: Brian
authors: B
authors: Stout
authors: Sebastien
authors: S
authors: Bidault
authors: Nicolas
authors: N
authors: Bonod