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Imaging high-dimensional spatial entanglement with a camera

Author

Listed:
  • M.P. Edgar

    (SUPA, School of Physics and Astronomy, University of Glasgow)

  • D.S. Tasca

    (SUPA, School of Physics and Astronomy, University of Glasgow)

  • F. Izdebski

    (SUPA, School of Engineering and Physical Sciences, Heriot-Watt University)

  • R.E. Warburton

    (SUPA, School of Engineering and Physical Sciences, Heriot-Watt University)

  • J. Leach

    (University of Ottawa)

  • M. Agnew

    (University of Ottawa)

  • G.S. Buller

    (SUPA, School of Engineering and Physical Sciences, Heriot-Watt University)

  • R.W. Boyd

    (University of Ottawa)

  • M.J. Padgett

    (SUPA, School of Physics and Astronomy, University of Glasgow)

Abstract

The light produced by parametric down-conversion shows strong spatial entanglement that leads to violations of EPR criteria for separability. Historically, such studies have been performed by scanning a single-element, single-photon detector across a detection plane. Here we show that modern electron-multiplying charge-coupled device cameras can measure correlations in both position and momentum across a multi-pixel field of view. This capability allows us to observe entanglement of around 2,500 spatial states and demonstrate Einstein–Podolsky–Rosen type correlations by more than two orders of magnitude. More generally, our work shows that cameras can lead to important new capabilities in quantum optics and quantum information science.

Suggested Citation

  • M.P. Edgar & D.S. Tasca & F. Izdebski & R.E. Warburton & J. Leach & M. Agnew & G.S. Buller & R.W. Boyd & M.J. Padgett, 2012. "Imaging high-dimensional spatial entanglement with a camera," Nature Communications, Nature, vol. 3(1), pages 1-6, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1988
    DOI: 10.1038/ncomms1988
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    Cited by:

    1. Hugo Defienne & Patrick Cameron & Bienvenu Ndagano & Ashley Lyons & Matthew Reichert & Jiuxuan Zhao & Andrew R. Harvey & Edoardo Charbon & Jason W. Fleischer & Daniele Faccio, 2022. "Pixel super-resolution with spatially entangled photons," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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