Strained-induced control of a pillar cavity-GaAs single quantum dot photon source

Title
Strained-induced control of a pillar cavity-GaAs single quantum dot photon source
Authors
한일기송진동Inah YeoDoukyun Kim
Keywords
quantum dots; single photon sources; micropillar cavity; strain-induced control; QD entangled photons
Issue Date
2019-12
Publisher
Scientific Reports
Citation
VOL 9, 18564
Abstract
Herein, we present the calculated strain-induced control of single GaAs/AlGaAs quantum dots (QDs) integrated into semiconductor micropillar cavities. We show precise energy control of individual single GaAs QD excitons under multi-modal stress fields of tailored micropillar optomechanical resonators. Further, using a three-dimensional envelope-function model, we evaluated the quantum mechanical correction in the QD band structures depending on their geometrical shape asymmetries and, more interestingly, on the practical degree of Al interdiffusion. Our theoretical calculations provide the practical quantum error margins, obtained by evaluating Al-interdiffused QDs that were engineered through a front-edge droplet epitaxy technique, for tuning engineered QD single-photon sources, facilitating a scalable on-chip integration of QD entangled photons.
URI
http://pubs.kist.re.kr/handle/201004/71082
ISSN
2045-2322
Appears in Collections:
KIST Publication > Article
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