The combination of superconducting single-photon detectors and phase-shift keying technology has enabled a leap in the performance of quantum cryptography.
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Trifonov, A. Pushing the limits. Nature Photon 1, 314–315 (2007). https://doi.org/10.1038/nphoton.2007.86
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DOI: https://doi.org/10.1038/nphoton.2007.86
