physica status solidi (b)
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editor: Stefan Hildebrandt (Editor-in-Chief), Sabine Bahrs (Deputy Editor)
Online ISSN: 1521-3951
Back Cover: Plasmonic antennas, positioning, and coupling of individual quantum systems (Phys. Status Solidi B 4/2012)
Daniel Dregely et al. (see their Feature Article on pp. 666–677) investigated plasmonic Yagi-Uda antennas and measured experimentally the modes supported by the antenna geometry by means of optical near-field microscopy technique. By expanding the single antenna to a two-dimensional antenna array with the antenna axes pointing out of the substrate plane, superior directive properties were obtained compared to the single antenna. The authors present three different methods to couple quantum systems to plasmonic antennas. Two-step electron beam lithography allows for reliable positioning of core-shell quantum dots and nitrogen-vacancy centers in nanodiamonds with a sub-10 nm accuracy. The hybrid system of directive plasmonic antennas and quantum emitters can serve as an efficient single photon source. It is suitable for high-speed information transfer at optical frequencies on the nanoscale for future applications.