The future envisaged global-scale quantum-communication network will comprise various
nodes interconnected via optical fibers or free-space channels, depending on the link …

Current satellite-based quantum key distribution (QKD) is limited to nighttime operations,
and the reliance on microwave communication for key distillation leads to significant delays …

Entanglement-based quantum key distribution can enable secure communication in trusted
node-free networks and over long distances. Although implementations exist both in fiber …

Quantum key distribution (QKD) offers future proof security based on fundamental laws of
physics. Long-distance QKD spanning regions such as the United Kingdom (UK) may …

Recent experimental breakthroughs in satellite quantum communications have opened up
the possibility of creating a global quantum internet using satellite links. This approach …

Quantum key distribution (QKD) has matured in recent years from laboratory proof-of-
principle demonstrations to commercially available systems. One of the major bottlenecks is …

Quantum light sources emitting triggered single photons or entangled photon pairs have the
potential to boost the performance of quantum key distribution (QKD) systems. Proof-of …

Free-space quantum key distribution (QKD) systems are often designed to implement
polarization-encoding protocols. Alternatively, time-bin/phase-encoding protocols are …

Quantum communication has seen rapid progress towards practical large-scale networks,
with quantum key distribution (QKD) spearheading this development. While fibre-based …

Satellite-based quantum communication is a promising approach for realizing global-scale
quantum networks. For free-space quantum channel, single-mode fiber coupling is …