Twin-beam sub-shot-noise raster-scanning microscope

Sabines-Chesterking, J., McMillan, A. R., Moreau, P. A. , Joshi, S. K., Knauer, S., Johnston, E., Rarity, J. G. and Matthews, J. C. F. (2019) Twin-beam sub-shot-noise raster-scanning microscope. Optics Express, 27(21), pp. 30810-30818. (doi: 10.1364/OE.27.030810) (PMID:31684324)

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By exploiting the quantised nature of light, we demonstrate a sub-shot-noise scanning optical transmittance microscope. Our microscope demonstrates, with micron scale resolution, a factor of improvement in precision of 1.76(9) in transmittance estimation gained per probe photon relative to the theoretical model, a shot-noise-limited source of light, in an equivalent single-pass classical version of the same experiment using the same number of photons detected with a 90% efficient detector. This would allow us to observe photosensitive samples with nearly twice the precision, without sacrificing image resolution or increasing optical power to improve signal-to-noise ratio. Our setup uses correlated twin-beams produced by parametric down-conversion, and a hybrid detection scheme comprising photon-counting-based feed-forward and a highly efficient CCD camera.

Item Type:Articles
Additional Information:Funding: Engineering and Physical Sciences Research Council (EP/L024020/1, EP/M024458/1); EPSRC UK Quantum Technology Hub in Quantum Enhanced Imaging (EP/M01326X/1); Centre for Nanoscience and Quantum Information; EPSRC Quantum Technology Fellowship (EP/M024385/1); European Research Council (ERC-2018-STG 803665).
Keywords:Diffraction limit, image analysis, laser beams, phase estimation, phase imaging, semiconductor lasers.
Glasgow Author(s) Enlighten ID:Moreau, Dr Paul-Antoine
Authors: Sabines-Chesterking, J., McMillan, A. R., Moreau, P. A., Joshi, S. K., Knauer, S., Johnston, E., Rarity, J. G., and Matthews, J. C. F.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN (Online):1094-4087
Published Online:10 October 2019
Copyright Holders:Copyright © 2019 Optical Society of America
First Published:First published in Optics Express 27(21): 30810-30818
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
170574Integrated Photonic Quantum technologiesRobert HadfieldEngineering and Physical Sciences Research Council (EPSRC)EP/L024020/1ENG - Electronics & Nanoscale Engineering
190841UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/M01326X/1P&S - Physics & Astronomy