Measurements of the Hong–Ou–Mandel effect in a quantum system with PT-symmetric losses composed of coupled waveguides and single photons produce some counterintuitive results.
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Graefe, EM. PT symmetry dips into two-photon interference. Nat. Photonics 13, 822–823 (2019). https://doi.org/10.1038/s41566-019-0551-y
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DOI: https://doi.org/10.1038/s41566-019-0551-y
