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arXiv · 2411.07819

Heralded pure single-photon sources using nanophotonic waveguides with quadratic and cubic nonlinearities

Mahmoud Almassri·Mohammed F. Saleh
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Abstract

This paper presents, to our knowledge, a new approach in developing integrated pure heralded single-photon sources based on the interplay between the spontaneous four-wave mixing and sum-frequency generation parametric processes. We introduce a comprehensive quantum model to exploit this interplay in AlGaAs and LiNbO$_3$ nanophotonic waveguides. The developed model is used to assess the performance of the sources based on the photon-pair generation and the associated spectral purity. We find that this approach can remarkably improve the spectral purity of low-pure generated photon pairs, relaxing the restrictions on the structure design and the used pump wavelength. In addition, it overcomes the current hurdles in implementing on-chip photon detectors operating at room temperature, paving the way for advanced applications in integrated quantum photonics and information processing.

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Mahmoud Almassri, Mohammed F. Saleh. 2024-11-12. Heralded pure single-photon sources using nanophotonic waveguides with quadratic and cubic nonlinearities. https://doi.org/10.1364/josab.533482

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