Twin-field (TF) quantum key distribution (QKD) fundamentally alters the rate-distance
relationship of QKD, offering the scaling of a single-node quantum repeater. Although recent …

Electroluminescence from a single quantum dot within the intrinsic region of a pin junction is
shown to act as an electrically driven single-photon source. At low injection currents, the dot …

Entangled photon pairs are an important resource in quantum optics 1 , and are essential
for quantum information 2 applications such as quantum key distribution 3 , 4 and controlled …

Self-assembled quantum dots comprise a versatile system with which to study quantum
effects in the solid state. Many devices have been developed that demonstrate controlled …

Quantum key distribution (QKD) 1 , 2 allows two distant parties to share encryption keys with
security based on physical laws. Experimentally, QKD has been implemented via optical …

We study the quantum-confined Stark effect in single InAs/GaAs quantum dots embedded
within a AlGaAs/GaAs/AlGaAs quantum well. By significantly increasing the barrier height we …

Lasers and LEDs have a statistical distribution in the number of photons emitted within a
given time interval. Applications exploiting the quantum properties of light require sources for …

The theoretically proven security of quantum key distribution (QKD) could revolutionize the
way in which information exchange is protected in the future 1 , 2 . Several field tests of QKD …

We demonstrate the triggered emission of polarization-entangled photon pairs from the
biexciton cascade of a single InAs quantum dot embedded in a GaAs/AlAs planar microcavity. …

Photonic integrated circuits hold great promise in enabling the practical wide-scale deployment
of quantum communications; however, despite impressive experiments of component …