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 …

Quantum secure direct communication (QSDC) is a unique technique, which supports the
secure transmission of confidential information directly through a quantum channel without …

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 …

This article describes the current technical level of developments in the field of continuous-
variable quantum key distribution (CV-QKD). Various classifications are described, the …

Tap-proof long-distance quantum communication requires a deep understanding of the
strong losses in transmission channels. Here we provide a rigorous treatment of the effects …

We present a quantum communication experiment conducted over a point-topoint free-
space link of 1.6 km in urban conditions. We study atmospheric influences on the capability …

Free-space optical communication links are promising channels for establishing secure
quantum communication. Here we study the transmission of nonclassical light through a …

In developing the global quantum Internet, quantum communication with low-earth-orbit
satellites will play a pivotal role. Such communication will need to be two way: effective not …

A high-speed four-state continuous-variable quantum key distribution (CV-QKD) system,
enabled by wavelength-division multiplexing, polarization multiplexing, and orbital angular …

Satellite-based quantum communication is essential for both foundational quantum physics
tests and scalable quantum networks. However, the practical implementation of such …