# Security proof of practical quantum key distribution with detection-efficiency mismatch

@article{Zhang2020SecurityPO, title={Security proof of practical quantum key distribution with detection-efficiency mismatch}, author={Yanbao Zhang and Patrick J. Coles and Adam B Winick and Jie Lin and Norbert Lutkenhaus}, journal={arXiv: Quantum Physics}, year={2020} }

Quantum key distribution (QKD) protocols with threshold detectors are driving high-performance QKD demonstrations. The corresponding security proofs usually assume that all physical detectors have the same detection efficiency. However, the efficiencies of the detectors used in practice might show a mismatch depending on the manufacturing and setup of these detectors. A mismatch can also be induced as the different spatial-temporal modes of an incoming single might couple differently to a… CONTINUE READING

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