Many quantum key distribution systems employ a laser followed by an optical attenuator to
prepare weak coherent states in the source. Their mean photon number must be …

We consider a subcarrier wave quantum key distribution (QKD) system, where quantum
encoding is carried out at weak sidebands generated around a coherent optical beam as a …

In this paper we report a continuous-variable quantum key distribution protocol using
multimode coherent states generated on subcarrier frequencies of the optical spectrum. We …

We experimentally demonstrate that a single-photon detector ID210 commercially available
from ID Quantique is vulnerable to blinding and can be fully controlled by bright illumination …

Although quantum communication systems are being deployed on a global scale, their
realistic security certification is not yet available. Here we present a security evaluation and …

Quantum key distribution (QKD) provides theoretic information security in communication
based on the laws of quantum physics. In this work, we report an implementation of quantum …

We develop a quantum model of a traveling-wave electro-optical phase modulator by
considering a parametric interaction of the optical and radiofrequency waves in the …

In this paper, we compare two solutions (well known and newly proposed) for subcarrier
wave quantum key distribution systems that decrease the crucial impact of the errorless …

In this paper we investigate the advanced unambiguous state discrimination (USD) attack
that is crucial for quantum key distribution based on phase-coded coherent states …

The theory and practical realization of a broadband quantum-noise generator based on an
original integrated optical beam splitter in the form of a Mach-Zehnder interferometer is …