Nonlocal coherent perfect absorption

Jeffers, John (2019) Nonlocal coherent perfect absorption. Physical Review Letters, 123 (14). 143602. ISSN 1079-7114 (

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Coherent absorption that occurs at two spatially separated, macroscopic lossy beam splitters is described. A superposition mode of any phase can be chosen as the absorbed or transparent mode. For a nonclassical two-photon NOON-state input, a superposition of two photons entering via one of two separate input modes, a single photon can survive the pair of beam splitters with certainty, implying nonlocal absorption of a single photon, which can be detected via the interference in the two-photon survival probability.