Heidelberg 2015 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics III
Q 62.60: Poster
Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer
Experimental realization of an optical antenna designed for collecting 99% of photons from a quantum emitter — •Xiao-Liu Chu1,2, Thomas Brenner1,3, Xue-Wen Chen1,2, Yagnaseni Ghosh4, Jennifer Hollingsworth4, Vahid Sandoghdar1,2, and Stephan Götzinger2,1 — 1Max Planck Institute for the Science of Light, 91058 Erlangen, Germany — 2Department of Physics, Friedrich Alexander University of Erlangen-Nürnberg, 91058 Erlangen, Germany — 3Institute of Physics and Astronomy, Universityof Potsdam, 14476 Potsdam-Golm, Germany — 4Materials Physics and Applications: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
We have recently theoretically investigated a planar metallo-dielectric antenna that is designed to convert the dipolar radiation of an arbitrarily oriented emitter to a directional beam with more than 99% efficiency. Here, we present the fabrication and characterization of such an antenna using a single colloidal quantum dot (CdS/CdSe)as single-photon source. The antenna consists of a multilayer architecture with stepwise change in the refractive index. Single photons emitted by a quantum dot sandwiched in between high and low refractive index layers are channeled into the high index substrate and collected by a standard microscope objective. This system serves as a stable and ultra-bright source of single photons that is highly desirable for information processing, metrology and other emerging quantum technologies.
[1] X.-W. Chen et al., Opt. Lett. 36, 3545 (2011)
[2] X.-L. Chu et al., Optica 1, 203 (2014)