Intensity modulation as a preemptive measure against blinding of single-photon detectors based on self-differencing cancellation

A Koehler-Sidki, M Lucamarini, JF Dynes, GL Roberts… - Physical Review A, 2018 - APS
Quantum key distribution is rising as an important cryptographic primitive for protecting the
communication infrastructure in the digital era. However, its implementation security is often …

Countermeasure against blinding attack for single-photon detectors in quantum key distribution

L Jiang, D Li, Y Fang, M Zhao, M Liu, Z Xie… - Journal of …, 2024 - iopscience.iop.org
Quantum key distribution (QKD), rooted in quantum mechanics, offers information-theoretic
security. However, practical systems open security threats due to imperfections, notably …

Backflashes from fast-gated avalanche photodiodes in quantum key distribution

A Koehler-Sidki, JF Dynes, TK Paraïso… - Applied Physics …, 2020 - pubs.aip.org
InGaAs single-photon avalanche photodiodes (APDs) are key enablers for high-bit rate
quantum key distribution. However, the deviation of such detectors from ideal models can …

Ability of strong-pulse illumination to hack self-differencing avalanche photodiode detectors in a high-speed quantum-key-distribution system

B Gao, Z Wu, W Shi, Y Liu, D Wang, C Yu, A Huang… - Physical review A, 2022 - APS
Implementation of high-speed quantum key distribution (QKD) has become one of the major
focuses in the field, which produces a high key-generation rate for applications. To achieve …

Strong pulse illumination hacks self-differencing avalanche photodiode detectors in a high-speed quantum key distribution system

B Gao, Z Wu, W Shi, Y Liu, D Wang, C Yu… - arXiv preprint arXiv …, 2022 - arxiv.org
Implementation of high-speed quantum key distribution~(QKD) has become one of the major
focus in the field, which produces high key-generation rate for applications. To achieve high …

Hacking single-photon avalanche detectors in quantum key distribution via pulse illumination

Z Wu, A Huang, H Chen, SH Sun, J Ding, X Qiang… - Optics …, 2020 - opg.optica.org
Quantum key distribution (QKD) has been proved to be information-theoretically secure in
theory. Unfortunately, the imperfect devices in practice compromise its security. Thus, to …

Hacking the quantum key distribution system by exploiting the avalanche-transition region of single-photon detectors

YJ Qian, DY He, S Wang, W Chen, ZQ Yin, GC Guo… - Physical Review …, 2018 - APS
Avalanche-photodiode-based single-photon detectors (SPDs), as crucial and practical
components, are widely used in quantum key distribution (QKD) systems. For effective …

Controlling an actively-quenched single photon detector with bright light

S Sauge, L Lydersen, A Anisimov, J Skaar… - Optics express, 2011 - opg.optica.org
We control using bright light an actively-quenched avalanche single-photon detector.
Actively-quenched detectors are commonly used for quantum key distribution (QKD) in the …

Automated verification of countermeasure against detector-control attack in quantum key distribution

P Acheva, K Zaitsev, V Zavodilenko, A Losev… - EPJ Quantum …, 2023 - epjqt.epj.org
Attacks that control single-photon detectors in quantum key distribution using tailored bright
illumination are capable of eavesdropping the secret key. Here we report an automated …

Hacking commercial quantum cryptography systems by tailored bright illumination

L Lydersen, C Wiechers, C Wittmann, D Elser… - Nature …, 2010 - nature.com
The peculiar properties of quantum mechanics allow two remote parties to communicate a
private, secret key, which is protected from eavesdropping by the laws of physics 1, 2, 3, 4 …