Rostock 2019 – wissenschaftliches Programm
Q 24.6: Poster
Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik
Towards efficient light extraction and directional light emission from SiV color centers in planar Yagi-Uda antennas — •Hossam Galal1, Assegid Flatae1, Stefano Lagomarsino1,3, Christoph Wild2, and Mario Agio1 — 1Laboratory of Nano-Optics and Cu, University of Siegen, 57072 Siegen, Germany — 2Diamond Materials GmbH, 79108 Freiburg, Germany — 3Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, 50019 Sesto Fiorentino
Color centers in diamond represent a promising hardware for developing quantum optical technologies. However, light cannot be easily collected from such systems due to radiation at wide angles and total internal reflection at the diamond interface. Typically, advanced optical nanostructures and/or sophisticated external optics are required to overcome these issues. Recently, we have proposed a planar configuration of an optical Yagi-Uda antenna, which leads to large extraction efficiencies and strong directional emission from solid-state quantum emitters . Here, we apply our scheme to SiV color centers in diamond, which we create in a controlled manner . Polycrystalline diamond membranes with thicknesses on the order of 50 nm - 170 nm have been implanted with silicon ions to create SiV color centres. Next, we have deposited dielectric and metal films to build our planar antenna. We investigate the emission characteristics of such hybrid system and explore its potential for single-photon emission.
 H. Galal and M. Agio, Opt. Mater. Express 7, 1634 (2017).  S. Lagomarsino, et al., Diam. Relat. Mater. 84, 196 (2018).