Pulsed 1061-nm laser exposure damages or alters certain fiber-optic attenuators used in QKD, lowering damage thresholds and creating possible side-channels for attacks.
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Experimental characterization in two industrial prototypes shows intensity correlations between pulses significantly reduce asymptotic key rate in decoy-state BB84, with higher-order effects dominating.
High-dimensional encoding in entanglement-based QKD achieves optimal efficiency at finite photon pair production rates, boosting secret key rates by up to ten times compared to single-qubit approaches in low-signal satellite scenarios.
citing papers explorer
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Robustness of fiber-optic attenuators to 1061-nm sub-nanosecond pulsed laser radiation in quantum key distribution systems
Pulsed 1061-nm laser exposure damages or alters certain fiber-optic attenuators used in QKD, lowering damage thresholds and creating possible side-channels for attacks.
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Intensity correlations in decoy-state BB84 quantum key distribution systems
Experimental characterization in two industrial prototypes shows intensity correlations between pulses significantly reduce asymptotic key rate in decoy-state BB84, with higher-order effects dominating.
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Photon Efficiency of High-Dimensional Quantum Key Distribution
High-dimensional encoding in entanglement-based QKD achieves optimal efficiency at finite photon pair production rates, boosting secret key rates by up to ten times compared to single-qubit approaches in low-signal satellite scenarios.