AlGaAs-on-insulator Waveguides for Highly Efficient Photon Pair Generation

authored by: Hatam Mahmudlu, Stuart May, Ali Angulo, Marc Sorel, Michael Kues
Abstract: Efficient photon pair sources that provide high generation rates are necessary for applications in secure non-classical communication, quantum teleportation, and quantum information processing. This motivated the development of diverse integrated photon pair sources based on silicon nitride [1] , As 2 S 3 [2] , and AlGaAs [3]. In particular, the fabrication of AlGaAs-on-insulator (AlGaAs-OI) waveguides allows for submicrometer modal confinement, which leads to the enhancement of the effective nonlinearity in a material platform with low propagation losses. In addition, the high second χ (2) and third order χ (3) nonlinearities of AlGaAs [4] , and the possibility to modify the Al concentration of the alloy to reduce two-photon absorption (TPA) at telecom wavelengths [3] , make AlGaAs-OI a very promising candidate for highly efficient photon-pair generation via spontaneous parametric down conversion (SPDC) and spontaneous four-wave mixing (SFWM) processes.
Organisation(s): Institute of Photonics
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
External Organisation(s): University of Glasgow
Scuola Superiore Sant'Anna di Studi Universitari e di Perfezionamento
Type: Conference contribution
Publication date: 2021
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics
Electronic version(s): https://doi.org/10.1109/CLEO/Europe-EQEC52157.2021.9542418 (Access: Closed)