Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 43: Poster II
Q 43.63: Poster
Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof
Optimising single-photon collection efficiency using three-dimensional laser-written structures — •Tanja Neumer1, Andreas W. Schell1, Oliver Benson1, Johannes Kaschke2, Joachim Fischer2, and Martin Wegener2 — 1Nano-Optics, Institute of Physics, Humboldt-Universität zu Berlin, Newtonstraße 15, D-12489 Berlin, Germany — 2Wegener Group, Institue for Applied Physics, Karlsruher Institut für Technologie, Wolfgang-Gaede-Straße 1, D-76131 Karlsruhe
Efficient extraction of single photons from solid-state emitters in high-index materials is a major challenge for integrated quantum technologies. We introduce a novel approach to enhance collection efficiencies of single-photons emitted from nanodiamonds using tailored solid immersion lenses (SILs). First, we describe farfield intensity distributions calculated by finite-difference time domain (FDTD) simulations targeting high collection efficiencies for microscope objectives with low numerical aperture. Then we introduce the fabrication technique of the structures which is based on the method of direct laser lithography in a photoresist. This resist can be mixed with nanodiamonds containing single nitrogen-vacancy centres as single-photon emitters. We present experimental results demonstrating the feasibility of our approach [1].
[1] Andreas W. Schell, Johannes Kaschke, Joachim Fischer, Rico Henze, Janik Wolters, Martin Wegener, Oliver Benson, arXiv:1209.2036 (2012)