Journal article
J. Cariñe, S. Gómez, Giannini F. Obregón, E. S. Gómez, M. Figueroa, G. Lima, G. Xavier
IEEE Access, 2021
IEEE Access, 2021
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APA
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Cariñe, J., Gómez, S., Obregón, G. F., Gómez, E. S., Figueroa, M., Lima, G., & Xavier, G. (2021). Post-Measurement Adjustment of the Coincidence Window in Quantum Optics Experiments. IEEE Access.
Chicago/Turabian
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Cariñe, J., S. Gómez, Giannini F. Obregón, E. S. Gómez, M. Figueroa, G. Lima, and G. Xavier. “Post-Measurement Adjustment of the Coincidence Window in Quantum Optics Experiments.” IEEE Access (2021).
MLA
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Cariñe, J., et al. “Post-Measurement Adjustment of the Coincidence Window in Quantum Optics Experiments.” IEEE Access, 2021.
BibTeX Click to copy
@article{j2021a,
title = {Post-Measurement Adjustment of the Coincidence Window in Quantum Optics Experiments},
year = {2021},
journal = {IEEE Access},
author = {Cariñe, J. and Gómez, S. and Obregón, Giannini F. and Gómez, E. S. and Figueroa, M. and Lima, G. and Xavier, G.}
}
Abstract
We report on an electronic coincidence detection circuit for quantum photonic applications implemented on a field-programmable gate array (FPGA), which records each the time separation between detection events coming from single-photon detectors. We achieve a coincidence window as narrow as 500 ps with a series of optimizations on a readily-available and affordable FPGA development board. Our implementation allows real-time visualization of coincidence measurements for multiple coincidence window widths simultaneously. To demonstrate the advantage of our high-resolution visualization, we certified the generation of polarized entangled photons by collecting data from multiple coincidence windows with minimal accidental counts, obtaining a violation of the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality by more than 338 standard deviations. Our results have shown the applicability of our electronic design in the field of quantum information.