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

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Mahmudlu, H.; May, S.; Angulo, A.; Sorel, M.; Kues, M.: AlGaAs-on-insulator waveguide for highly efficient photon-pair generation via spontaneous four-wave mixing. In: Optics Letters 46 (2021), Nr. 5, 1061. DOI: https://doi.org/10.1364/ol.418932

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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 × 1012 pairs/(sW2) 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.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2021
Appears in Collections:Fakultät für Mathematik und Physik

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