Demonstrates frequency-bin entanglement generation through polarization of biphotons, highlighting interference effects.
We demonstrated discrete frequency-bin entanglement generation via a Hong-Ou-Mandel type interference of orthogonally polarized biphotons. By tuning the temporal distinguishability in the HOM-type interference, we generated high-dimensional frequency-bin entanglement characterized via temporal quantum beating.
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Cheng et al. (2025) studied this question.
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