19 November 2012 High-dimensional spatial entanglement observed with an electron multiplying CCD camera
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Using an electron multiplying CCD camera we observe both image plane (position) and far field (momentum) correlations between photon pairs produced from spontaneous parametric down-conversion when using a 201 x 201 bi-dimensional array of pixels and a flux of around 0.02 photons/pixel. After background subtraction we characterize the strength of signal and idler correlations in both transverse dimensions by applying entanglement and EPR criteria, showing good agreement with the theoretical predictions. The application of such devices in quantum optics could have a wide range, including quantum computation with spatial degrees of freedom of single photons.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel S. Tasca, Daniel S. Tasca, Matthew P. Edgar, Matthew P. Edgar, Frauke Izdebski, Frauke Izdebski, Ryan E. Warburton, Ryan E. Warburton, Jonathan Leach, Jonathan Leach, Megan Agnew, Megan Agnew, Gerald S. Buller, Gerald S. Buller, Robert W. Boyd, Robert W. Boyd, Miles J. Padgett, Miles J. Padgett, } "High-dimensional spatial entanglement observed with an electron multiplying CCD camera", Proc. SPIE 8542, Electro-Optical Remote Sensing, Photonic Technologies, and Applications VI, 85421T (19 November 2012); doi: 10.1117/12.981414; https://doi.org/10.1117/12.981414


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