Imaging with a small number of photons

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data archive 10322 disk0/00/00/03/20 2016-06-02 11:32:24 2025-05-22 10:31:54 2016-06-02 11:32:24 data_collection show MORRIS PETER 40324 Aspden Reuben S. 26598 Bell Jessica E.C. Boyd Robert 31023 Padgett Miles 10309 0000-0001-6643-0618 glaresearchdata:2016-06-02-320 Imaging with a small number of photons 30600000 Low-light-level imaging techniques have application in many diverse fields, ranging from biological sciences to security. A high-quality digital camera based on a multi-megapixel array will typically record an image by collecting of order 105 photons per pixel, but by how much could this photon flux be reduced? In this work we demonstrate a single-photon imaging system based on a time-gated intensified camera from which the image of an object can be inferred from very few detected photons. We show that a ghost-imaging configuration, where the image is obtained from photons that have never interacted with the object, is a useful approach for obtaining images with high signal-to-noise ratios. The use of heralded single photons ensures that the background counts can be virtually eliminated from the recorded images. By applying principles of image compression and associated image reconstruction, we obtain high-quality images of objects from raw data formed from an average of fewer than one detected photon per image pixel. 2016-06-02 submitted University of Glasgow 10.5525/gla.researchdata.320 Machine_Instrument_Log Other University of Glasgow 54987 1 Challenges in Orbital Angular Momentum Miles Padgett Engineering & Physical Sciences Research Council (EPSRC) EP/I012451/1 P&A - PHYSICS & ASTRONOMY 54987 2 Challenges in Orbital Angular Momentum Miles Padgett Engineering & Physical Sciences Research Council (EPSRC) EP/I012451/1 P&A - PHYSICS & ASTRONOMY FALSE EN http://dx.doi.org/10.1038/ncomms6913 article 2034-11-30 R Paper published 5 Jan 2015 - EPSRC retention 10 years. Review and extend if accessed. 2024-12-16 AA: Original Retention date 2025-01-05. Extended to 10 years from last access date. FALSE FALSE Imaging with a small number of photons http://eprints.gla.ac.uk/id/eprint/101534