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Title: Anti-Hong–Ou–Mandel interference by coherent perfect absorption of entangled photons
Authors: Vetlugin, Anton N.
Guo, Ruixiang
Soci, Cesare
Zheludev, Nikolay I.
Keywords: Science::Physics
Issue Date: 2022
Source: Vetlugin, A. N., Guo, R., Soci, C. & Zheludev, N. I. (2022). Anti-Hong–Ou–Mandel interference by coherent perfect absorption of entangled photons. New Journal of Physics, 24(12), 122001-.
Project: MOE2016-T3-1-006 (S) 
Journal: New Journal of Physics 
Abstract: Two-photon interference, known as the Hong–Ou–Mandel effect, has colossal implications for quantum technology. It was observed in 1987 with two photodetectors monitoring outputs of the beamsplitter illuminated by photon pairs: the coincidence rate of the detectors drops to zero when detected photons overlap in time. More broadly, bosons (e.g. photons) coalesce while fermions (e.g. electrons) anti-coalesce when interfering on a lossless beamsplitter. Quantum interference of bosons and fermions can be tested in a single—photonics platform, where bosonic and fermionic states are artificially created as pairs of entangled photons with symmetric and anti-symmetric spatial wavefunctions. We observed that interference on a lossy beamsplitter of a subwavelength thickness, or a coherent perfect absorber, reverses quantum interference in such a way that bosonic states anti-coalesce while fermionic states exhibit coalescent-like behavior. The ability to generate states of light with different statistics and manipulate their interference offers important opportunities for quantum information and metrology.
ISSN: 1367-2630
DOI: 10.1088/1367-2630/ac9fe9
DOI (Related Dataset): 10.21979/N9/AKELH1
Schools: School of Physical and Mathematical Sciences 
Rights: © 2022 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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