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Robustness of fiber-optic attenuators to 1061-nm sub-nanosecond pulsed laser radiation in quantum key distribution systems
Daria Ruzhitskaya, Irina Zhluktova, Anastasiya Ponosova +10
The security of quantum key distribution (QKD) systems relies on the physical integrity of their components. While laser-damage attacks (LDAs) using high-power continuous-wave (cw)…
High-efficiency Weak-trace-free Counterfactual Communication via Quantum Zeno Effect
Tianyi Xing, Anqi Huang, Yizhi Wang +10
The quantum Zeno effect, which inhibits quantum state evolution via repeated weak measurements, significantly enhances the efficiency of interaction-free measurement (IFM). This fu…
Characterization of Intensity Correlation via Single-photon Detection in Quantum Key Distribution
Tianyi Xing, Junxuan Liu, Likang Zhang +10
One of the most significant vulnerabilities in the source unit of quantum key distribution (QKD) is the correlation between quantum states after modulation, which shall be characte…
Practical security of twin-field quantum key distribution with optical phase-locked loop under wavelength-switching attack
Qingquan Peng, Jiu-Peng Chen, Tianyi Xing +4
The twin-field class quantum key distribution (TF-class QKD) has experimentally demonstrated the ability to surpass the fundamental rate-distance limit without requiring a quantum…
Intensity correlations in measurement-device-independent quantum key distribution
Junxuan Liu, Tianyi Xing, Ruiyin Liu +3
The intensity correlations due to imperfect modulation during the quantum-state preparation in a measurement-device-independent quantum key distribution (MDI QKD) system compromise…