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)

Abstract

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
• Status: Published
• Refereed: Yes
• 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: 0146-9592
• 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

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
173076		Compact visible frequency combs	Marc Sorel	Engineering and Physical Sciences Research Council (EPSRC)	EP/P005624/1	ENG - Electronics & Nanoscale Engineering