title: Electromagnetic polarization-controlled perfect switching effect with high-refractive-index dimers and the beam-splitter configuration.
abstract: Sub-wavelength particles made from high-index dielectrics, either individual or as ensembles, are ideal candidates for multifunctional elements in optical devices. Their directionality effects are traditionally analysed through forward and backward measurements, even if these directions are not convenient for in-plane scattering practical purposes. Here we present unambiguous experimental evidence in the microwave range that for a dimer of HRI spherical particles, a perfect switching effect is observed out of those directions as a consequence of the mutual particle electric/magnetic interaction. The binary state depends on the excitation polarization. Its analysis is performed through the linear polarization degree of scattered radiation at a detection direction perpendicular to the incident direction: the beam-splitter configuration. The scaling property of Maxwell's equations allows the generalization of our results to other frequency ranges and dimension scales, for instance, the visible and the nanometric scale.
authors.affiliation: Group of Optics, Department of Applied Physics, University of Cantabria, Cantabria 39005, Spain.
authors.forename: Ángela I
authors.initials: ÁI
authors.lastname: Barreda
authors.affiliation: Aix-Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France.|Centre Commun de Ressources en Microondes CCRM, 5 rue Enrico Fermi, Marseille 13453, France.
authors.forename: Hassan
authors.initials: H
authors.lastname: Saleh
authors.affiliation: Aix-Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France.
authors.forename: Amelie
authors.initials: A
authors.lastname: Litman
authors.affiliation: Group of Optics, Department of Applied Physics, University of Cantabria, Cantabria 39005, Spain.
authors.forename: Francisco
authors.initials: F
authors.lastname: González
authors.affiliation: Aix-Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France.
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Geffrin
authors.affiliation: Group of Optics, Department of Applied Physics, University of Cantabria, Cantabria 39005, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Moreno