The security of quantum communication using a weak coherent source requires an accurate
knowledge of the source's mean photon number. Finite calibration precision or an active …

We propose a decoy-pulse method to overcome the photon-number-splitting attack for
Bennett-Brassard 1984 quantum key distribution protocol in the presence of high loss: A …

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 …

The single-photon detectionefficiency of the detector unit is crucial for the security of
common quantum key distribution protocols like Bennett-Brassard 1984 (BB84). A low value …

Quantum key distribution (QKD) protocols with threshold detectors are driving high-
performance QKD demonstrations. The corresponding security proofs usually assume that …

Quantum key distribution (QKD) is a method of realizing private communication securely
against an adversary with unlimited power. The QKD protocols proposed and demonstrated …

We investigate the security of quantum key distribution with entangled photons, focusing on
the two-photon variation of the Bennett-Brassard 1984 (BB84) protocol proposed in 1992 by …

Quantum key distribution (QKD) offers a way for establishing information-theoretical secure
communications. An important part of QKD technology is a high-quality random number …

One of the challenges in practical quantum key distribution is dealing with efficiency
mismatch between different threshold single-photon detectors. There are known bounds for …

To improve the performance of a quantum-key-distribution (QKD) system, high speed, low
dark count single photon detectors (or low-noise homodyne detectors) are required …