Bright single photon source based on self-aligned quantum dot-cavity systems
Abstract
We report on a quasi-planar quantum-dot-based single-photon source that shows an unprecedented high extraction efficiency of 42% without complex photonic resonator geometries or post-growth nanofabrication. This very high efficiency originates from the coupling of the photons emitted by a quantum dot to a Gaussian shaped nanohill defect that naturally arises during epitaxial growth in a self-aligned manner. We investigate the morphology of these defects and characterize the photonic operation mechanism. Our results show that these naturally arising coupled quantum dot-defects provide a new avenue for efficient (up to 42% demonstrated) and pure (g2(0) value of 0.023) single-photon emission. (C) 2014 Optical Society of America
Citation
Maier , S , Gold , P , Forchel , A , Gregersen , N , Mork , J , Höfling , S , Schneider , C & Kamp , M 2014 , ' Bright single photon source based on self-aligned quantum dot-cavity systems ' , Optics Express , vol. 22 , no. 7 , pp. 8136-8142 . https://doi.org/10.1364/OE.22.008136
Publication
Optics Express
Status
Peer reviewed
ISSN
1094-4087Type
Journal article
Rights
© 2014 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Description
This work was financially supported by the German Ministry of Education and Research (BMBF) via the project QuaHL-Rep and by the State of Bavaria.Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.