Correlated photon pair generation in AlGaAs nanowaveguides via spontaneous four-wave mixing

Kultavewuti, P., Zhu, E. Y., Qian, L., Pusino, V. , Sorel, M. and Aitchison, J. S. (2016) Correlated photon pair generation in AlGaAs nanowaveguides via spontaneous four-wave mixing. Optics Express, 24(4), pp. 3365-3376. (doi: 10.1364/OE.24.003365) (PMID:26906995)

Abstract

We demonstrate a source of correlated photon pairs which will have applications in future integrated quantum photonic circuits. The source utilizes spontaneous four-wave mixing (SFWM) in a dispersion-engineered nanowaveguide made of AlGaAs, which has merits of negligible two-photon absorption and low spontaneous Raman scattering (SpRS). We observe a coincidence-to-accidental (CAR) ratio up to 177, mainly limited by propagation losses. Experimental results agree well with theoretical predictions of the SFWM photon pair generation and the SpRS noise photon generation. We also study the effects from the SpRS, propagation losses, and waveguide lengths on the quality of our source.

• Item Type: Articles
• Additional Information: The authors would like to thank the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Edward S. Rogers Sr. Graduate Scholarship for funding.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Sorel, Professor Marc and Pusino, Dr Vincenzo
• Authors: Kultavewuti, P., Zhu, E. Y., Qian, L., Pusino, V., Sorel, M., and Aitchison, J. S.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Optics Express
• Publisher: Optical Society of America
• ISSN: 1094-4087
• ISSN (Online): 1094-4087
• Published Online: 09 February 2016
• Copyright Holders: Copyright © 2016 OSA
• First Published: First published in Optics Express 24(4): 3365-3376
• Publisher Policy: Reproduced in accordance with the publisher copyright policy