TY  - JOUR
A1  - Maier, Sebastian
A1  - Gold, Peter
A1  - Forchel, Alfred
A1  - Gregersen, Niels
A1  - Mork, Jesper
A1  - Höfling, Sven
A1  - Schneider, Christian
A1  - Kamp, Martin
T1  - Bright single photon source based on self-aligned quantum dot-cavity systems
JF  - Optics Express
N2  - 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 (g(2)(0) value of 0.023) single-photon emission.
KW  - photon statistics
KW  - quantum communications
KW  - resonators
KW  - quantum-well -wire and -dot devices
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-119801
SN  - 1094-4087
VL  - 22
IS  - 7
ER  -