The recent launch of the Micius quantum-enabled satellite heralds a major step forward for
long-range quantum communication. Using single-photon discrete-variable quantum states …

Remarkable achievements have been witnessed in free-space quantum key distribution
(QKD), which acts as an available approach to extend the transmission range of quantum …

Satellite-based quantum terminals are a feasible way to extend the reach of quantum
communication protocols such as quantum key distribution (QKD) to the global scale. To that …

Technological realities limit terrestrial quantum key distribution (QKD) to single-link
distances of a few hundred kilometers. One promising avenue for global-scale quantum …

Measurement-device-independent quantum secure direct communication (MDI-QSDC)
protocol is capable of defending against attacks on detectors by illegal parties, and its …

Polarization modulation plays a key role in polarization-encoding quantum key distribution
(QKD). Here, we report a new, to the best of our knowledge, polarization modulation scheme …

Quantum key distribution (QKD) has the potential to improve communications security by
offering cryptographic keys whose security relies on the fundamental properties of quantum …

Optical homodyne detection is widely adopted in continuous-variable quantum key
distribution for high-rate field measurement quadratures. Besides that, those detection …

We present a new optical scheme for BB84 protocol quantum key distribution (QKD). The
proposed setup consists of a compact all-fiber polarization encoding optical scheme based …

Satellite-based quantum key distribution (QKD) has made significant strides in the past few
years, and an international space race toward practical quantum networks has begun. Being …