This research demonstrates a bright, narrowband photon-pair source using ultralow-loss waveguides, indicating advancements in integrated photonics.
We demonstrate a bright, narrowband, photon-pair source with ultralow-loss Si 3 N 4 waveguides fabricated using a standard CMOS foundry process. The photon-pair source achieves narrow linewidth comparable to atomic transitions, and record brightness for silicon photonics.
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Luo et al. (2025) studied this question.
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