Pixel super-resolution with spatially entangled photons

Defienne, H. , Cameron, P., Ndagano, B. , Lyons, A. , Reichert, M., Zhao, J., Harvey, A. R. , Charbon, E., Fleischer, J. W. and Faccio, D. (2022) Pixel super-resolution with spatially entangled photons. Nature Communications, 13, 3566. (doi: 10.1038/s41467-022-31052-6) (PMID:35732642) (PMCID:PMC9217946)

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Pixelation occurs in many imaging systems and limits the spatial resolution of the acquired images. This effect is notably present in quantum imaging experiments with correlated photons in which the number of pixels used to detect coincidences is often limited by the sensor technology or the acquisition speed. Here, we introduce a pixel super-resolution technique based on measuring the full spatially-resolved joint probability distribution (JPD) of spatially-entangled photons. Without shifting optical elements or using prior information, our technique increases the pixel resolution of the imaging system by a factor two and enables retrieval of spatial information lost due to undersampling. We demonstrate its use in various quantum imaging protocols using photon pairs, including quantum illumination, entanglement-enabled quantum holography, and in a full-field version of N00N-state quantum holography. The JPD pixel super-resolution technique can benefit any full-field imaging system limited by the sensor spatial resolution, including all already established and future photon-correlation-based quantum imaging schemes, bringing these techniques closer to real-world applications.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Ndagano, Mr Bienvenu and Defienne, Dr Hugo and Zhao, Mr Jiuxuan and Faccio, Professor Daniele and Harvey, Professor Andy and Cameron, Mr Patrick and Lyons, Dr Ashley
Authors: Defienne, H., Cameron, P., Ndagano, B., Lyons, A., Reichert, M., Zhao, J., Harvey, A. R., Charbon, E., Fleischer, J. W., and Faccio, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nature Communications
Publisher:Nature Research
ISSN (Online):2041-1723
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Nature Communications 13: 3566
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.5525/gla.researchdata.1269

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
305153RAEng Chair Emerging TechnologiesDaniele FaccioRoyal Academy of Engineering (RAE)CiET1819/20P&S - Physics & Astronomy
305567QuantIC - The UK Quantum Technoogy Hub in Quantum Enhanced ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/T00097X/1P&S - Physics & Astronomy
301688Nano-scale imaging with Hong-Ou-Mandel InterferometryDaniele FaccioEngineering and Physical Sciences Research Council (EPSRC)EP/R030081/1P&S - Physics & Astronomy
305457Adaptive Optics for Quantum CommunicationDaniele FaccioEuropean Commission (EC)840958P&S - Physics & Astronomy