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Hong–Ou–Mandel Dip Using Degenerate Photon Pairs from a Single Periodically Poled Lithium Niobate Waveguide with Integrated Mode Demultiplexer
We experimentally observed a Hong–Ou–Mandle dip with photon pairs generated in a periodically poled reverse-proton-exchange lithium niobate waveguide with an integrated mode demultiplexer at a wavelength of 1.5 µm. The visibility of the dip in the experiment was 80% without subtraction of any noise terms at a peak pump power …