Resolution-enhanced quantum imaging by centroid estimation of biphotons

Toninelli, E., Moreau, P.-A. , Gregory, T., Mihalyi, A., Edgar, M., Radwell, N. and Padgett, M. (2019) Resolution-enhanced quantum imaging by centroid estimation of biphotons. Optica, 6(3), pp. 347-353. (doi: 10.1364/OPTICA.6.000347)

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The spatial resolution of an optical system is limited by diffraction. Various schemes have been proposed to achieve resolution enhancement by employing either a scanning source/detector configuration or a two-photon response of the object. Here, we experimentally demonstrate a full-field resolution-enhancing scheme, based on the centroid estimation of spatially quantum-correlated biphotons. Our standard-quantum-limited scheme is able to image a general non-fluorescing object, using low-energy and low-intensity infrared illumination (i.e., with <0.001 photon per pixel per frame at 710 nm), achieving 41% of the theoretically available resolution enhancement. Images of real-world objects are shown for visual comparison, in which the classically bound resolution is surpassed using our technically straightforward quantum-imaging scheme.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles and Edgar, Dr Matthew and Radwell, Dr Neal and Moreau, Dr Paul-Antoine and Gregory, Dr Thomas and Toninelli, Ermes
Authors: Toninelli, E., Moreau, P.-A., Gregory, T., Mihalyi, A., Edgar, M., Radwell, N., and Padgett, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optica
Publisher:Optical Society of America
ISSN (Online):2334-2536
Published Online:11 March 2019
Copyright Holders:Copyright © 2019 Optical Society of America
First Published:First published in Optica 6(3): 347-353
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
624501TWISTS - Twists & more: the complex shape of lightMiles PadgettEuropean Research Council (ERC)340507S&E P&A - PHYSICS & ASTRONOMY
717951IMAGITMiles PadgettEuropean Commission (EC)706410S&E P&A - PHYSICS & ASTRONOMY
636381EPSRC Centre for Doctoral Training in Sensing and MeasurementAndrew HarveyEngineering and Physical Sciences Research Council (EPSRC)EP/L016753/1SCHOOL OF PHYSICS & ASTRONOMY
6672319UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/M01326X/1S&E P&A - PHYSICS & ASTRONOMY
738201EPSRC DTP 16/17 and 17/18Mary Beth KneafseyEngineering and Physical Sciences Research Council (EPSRC)EP/N509668/1R&I - RESEARCH STRATEGY & INNOVATION