AlGaAs-on-insulator waveguide for highly efficient photon-pair generation via spontaneous four-wave mixing

Mahmudlu, H., May, S. , Angulo, A., Sorel, M. and Kues, M. (2021) AlGaAs-on-insulator waveguide for highly efficient photon-pair generation via spontaneous four-wave mixing. Optics Letters, 46(5), pp. 1061-1064. (doi: 10.1364/OL.418932) (PMID:33649657)

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We report on the generation of correlated photon pairs in AlGaAs-on-insulator (AlGaAs-OI) waveguides through nonlinear spontaneous four-wave-mixing (SFWM). Our measurements reveal an SFWM pair generation efficiency of ∼0.096×10^12pairs/(sW^2) at a wavelength of 1550 nm. This is one of the highest efficiencies achieved to date for integrated SFWM sources. A maximal coincidence-to-accidental ratio of ∼122 is measured. A spectral characterization of the device’s pair emission at the quantum level demonstrates a broad generation bandwidth of 2.0 THz, which is important for frequency multiplexing applications. Our results indicate that AlGaAs-OI is an efficient material platform for integrated quantum photonics at telecom wavelengths.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Sorel, Professor Marc and May, Mr Stuart and Kues, Dr Michael
Authors: Mahmudlu, H., May, S., Angulo, A., Sorel, M., and Kues, M.
Subjects:Q Science > Q Science (General)
Q Science > QC Physics
T Technology > T Technology (General)
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN (Online):1539-4794
Published Online:27 January 2021
Copyright Holders:Copyright © 2021 Optical Society of America
First Published:First published in Optics Letters 46(5): 1061-1064
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
173076Compact visible frequency combsMarc SorelEngineering and Physical Sciences Research Council (EPSRC)EP/P005624/1ENG - Electronics & Nanoscale Engineering