Quantum cryptography is arguably the fastest growing area in quantum information science.
Novel theoretical protocols are designed on a regular basis, security proofs are constantly …

Concerted efforts are underway to establish an infrastructure for a global quantum Internet to
realise a spectrum of quantum technologies. This will enable more precise sensors, secure …

The study of free-space quantum communications requires tools from quantum information
theory, optics, and turbulence theory. Here we combine these tools to bound the ultimate …

Quantum key distribution provides secure keys with information-theoretic security ensured
by the principle of quantum mechanics. The continuous-variable version of quantum key …

Continuous variable (CV) quantum key distribution (QKD) provides a powerful setting for
secure quantum communications, thanks to the use of room-temperature off-the-shelf optical …

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 …

Establishing secure communication links at a global scale is a major potential application of
quantum information science but also extremely challenging for the underlying technology …

Continuous-variable quantum key distribution (CV-QKD) provides an effective way to obtain
the high secret key rate, but is limited by practical techniques. To overcome this limitation …

We provide a rigorous security proof of continuous-variable measurement-device-
independent quantum key distribution which incorporates finite-size effects and composable …

Currently, quantum key distribution (QKD) using continuous variable (CV) technology has
only been demonstrated over short‐range terrestrial links. Here, we attempt to answer …