Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 44: Quantum Optics of Solid State Photon Sources
Q 44.1: Vortrag
Donnerstag, 17. März 2011, 10:30–11:00, HSZ 02
Solid state single photon sources based on color centers in diamond — •Elke Neu1, David Steinmetz1, Christian Hepp1, Janine Riedrich-Möller1, Roland Albrecht1, Jan Meijer2, Martin Fischer3, Stefan Gsell3, Matthias Schreck3, and Christoph Becher1 — 1Universität des Saarlandes, FR 7.2 Experimentalphysik, D-66123 Saarbrücken — 2RUBION, Ruhr-Universität Bochum, D-44780 Bochum — 3Universität Augsburg, Lehrstuhl für Experimentalphysik 4, D-86135 Augsburg
Color centers in diamond are promising candidates for practical single photon sources due to room temperature operation and superior photostability. We observe single photon emission from various color centers, produced either by ion-implantation or in-situ doping during CVD-growth. Optimum results are obtained from Silicon-Vacancy (SiV)-centers in isolated nano-diamonds grown on Iridium layers. These centers feature emission predominantly (80-90 %) into the narrow (0.7 nm) zero-phonon-line and high brightness with up to 4.8 Mcps at saturation, thus being the brightest single color centers to date [1].
We observe for the first time the fine structure of a single SiV-center at cryogenic temperatures and perfom detailed spectroscopy investigating level structures, polarization and the influence of spectral diffusion. We discuss strategies for enhancing spectral and spatial emission properties by coupling color centers to micro-cavities e.g. fiber-based or photonic crystal cavities.
E. Neu et al, ArXiv 1008.4736 accepted for publication in New J. Phys.