title: Spin-optical metamaterial route to spin-controlled photonics.
abstract: Spin optics provides a route to control light, whereby the photon helicity (spin angular momentum) degeneracy is removed due to a geometric gradient onto a metasurface. The alliance of spin optics and metamaterials offers the dispersion engineering of a structured matter in a polarization helicity-dependent manner. We show that polarization-controlled optical modes of metamaterials arise where the spatial inversion symmetry is violated. The emerged spin-split dispersion of spontaneous emission originates from the spin-orbit interaction of light, generating a selection rule based on symmetry restrictions in a spin-optical metamaterial. The inversion asymmetric metasurface is obtained via anisotropic optical antenna patterns. This type of metamaterial provides a route for spin-controlled nanophotonic applications based on the design of the metasurface symmetry properties.
authors: Faculty of Mechanical Engineering and Russell Berrie Nanotechnology Institute, Technion-Israel Institute of Technology, Haifa, Israel.
authors: Nir
authors: N
authors: Shitrit
authors: Igor
authors: I
authors: Yulevich
authors: Elhanan
authors: E
authors: Maguid
authors: Dror
authors: D
authors: Ozeri
authors: Dekel
authors: D
authors: Veksler
authors: Vladimir
authors: V
authors: Kleiner
authors: Erez
authors: E
authors: Hasman