We developed a countermeasure against blinding attacks on low-noise detectors with a
background-noise-cancellation scheme in quantum key distribution (QKD) systems …

Quantum key distribution (QKD), rooted in quantum mechanics, offers information-theoretic
security. However, practical systems open security threats due to imperfections, notably …

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 …

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 …

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 …

Avalanche-photodiode-based single-photon detectors (SPDs), as crucial and practical
components, are widely used in quantum key distribution (QKD) systems. For effective …

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 …

Fast-gated avalanche photodiodes (APDs) are the most commonly used single photon
detectors for high-bit-rate quantum key distribution (QKD). Their robustness against external …

It has been shown that the single photon detectors (SPDs) based on the avalanche
photodiode (APD) can be blinded and controlled by the bright light and short trigger pulses …

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 …