Metamorphic Buffer Layer Platform for 1550 nm Single-Photon Sources Grown by MBE on (100) GaAs Substrate

Please always quote using this URN: urn:nbn:de:bvb:20-opus-246145
  • We demonstrate single-photon emission with a low probability of multiphoton events of 5% in the C-band of telecommunication spectral range of standard silica fibers from molecular beam epitaxy grown (100)-GaAs-based structure with InAs quantum dots (QDs) on a metamorphic buffer layer. For this purpose, we propose and implement graded In content digitally alloyed InGaAs metamorphic buffer layer with maximal In content of 42% and GaAs/AlAs distributed Bragg reflector underneath to enhance the extraction efficiency of QD emission. The fundamentalWe demonstrate single-photon emission with a low probability of multiphoton events of 5% in the C-band of telecommunication spectral range of standard silica fibers from molecular beam epitaxy grown (100)-GaAs-based structure with InAs quantum dots (QDs) on a metamorphic buffer layer. For this purpose, we propose and implement graded In content digitally alloyed InGaAs metamorphic buffer layer with maximal In content of 42% and GaAs/AlAs distributed Bragg reflector underneath to enhance the extraction efficiency of QD emission. The fundamental limit of the emission rate for the investigated structures is 0.5 GHz based on an emission lifetime of 1.95 ns determined from time-resolved photoluminescence. We prove the relevance of a proposed technology platform for the realization of non-classical light sources in the context of fiber-based quantum communication applications.show moreshow less

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Metadaten
Author: Piotr Andrzej Wroński, Paweł Wyborski, Anna Musiał, Paweł Podemski, Grzegorz Sęk, Sven Höfling, Fauzia Jabeen
URN:urn:nbn:de:bvb:20-opus-246145
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Physikalisches Institut
Language:English
Parent Title (English):Materials
ISSN:1996-1944
Year of Completion:2021
Volume:14
Issue:18
Article Number:5221
Source:Materials 2021, 14(18), 5221; https://doi.org/10.3390/ma14185221
DOI:https://doi.org/10.3390/ma14185221
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Tag:metamorphic buffer layer; quantum dots; single-photon source; telecommunication spectral range
Release Date:2022/01/11
Date of first Publication:2021/09/10
EU-Project number / Contract (GA) number:721394
OpenAIRE:OpenAIRE
Open-Access-Publikationsfonds / Förderzeitraum 2021
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International