Open AccessTriggered high-purity telecom-wavelength single-photon generation from p-shell-driven InGaAs/GaAs quantum dot
Author(s) -
Łukasz Dusanowski,
Paweł Holewa,
A. Maryński,
Anna Musiał,
Tobias Heuser,
Nicole Srocka,
David Quandt,
A. Strittmatter,
Sven Rodt,
J. Misiewicz,
Stephan Reitzenstein,
G. Sęk
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.031122
Subject(s) - photoluminescence , quantum dot , excitation , optoelectronics , materials science , wavelength , photon , gallium arsenide , single photon source , optics , photon counting , physics , quantum mechanics
We report on the experimental demonstration of triggered single-photon emission at the telecom O-band from In(Ga)As/GaAs quantum dots (QDs) grown by metal-organic vapor-phase epitaxy. Micro-photoluminescence excitation experiments allowed us to identify the p-shell excitonic states in agreement with high excitation photoluminescence on the ensemble of QDs. Hereby we drive an O-band-emitting GaAs-based QD into the p-shell states to get a triggered single photon source of high purity. Applying pulsed p-shell resonant excitation results in strong suppression of multiphoton events evidenced by the as measured value of the second-order correlation function at zero delay of 0.03 (and ~0.005 after background correction).