Experimental analysis shows improved photon-pair generation in plasmonic nanocavities, suggesting novel quantum photonic applications.
We demonstrate SPDC from thin film TiO2 embedded in plasmonic nanocavities, achieving enhanced cross-polarized photon-pair generation with sub-200 nm cavities. Characterizations include emission spectrum, polarization, and power-dependence studies, alongside second-order correlation (g(2)) measurements. Observed temporal correlations confirm photon-pair generation, highlighting the potential of this approach for scalable quantum photonic applications.
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Zhang et al. (2025) studied this question.
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