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. 2017 Jan 20;8:14010. doi: 10.1038/ncomms14010

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Copyright © 2017, The Author(s)

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(a) We show the coincidence rate (accidentals subtracted) of the two output arms as we delay one input arm. The red line is a Gaussian fit to the experimental data. The HOM visibility is 90±0.8%. The error bars indicate the standard error of measurement and are not visible because they are smaller than the data points. (b) Comparison between experiment and simulation of the splitting ratio as the number of periods (N) is varied. Error bars on experimental data are smaller than data points. (c) Corresponding HOM visibility as the number of periods (N) is varied.