Quantum theory has been successfully validated in numerous laboratory experiments. But
would such a theory, which effectively describes the behavior of microscopic physical …

Structured light, especially beams carrying orbital angular momentum (OAM), has gained
much interest due to its unique amplitude and phase structures. In terms of communication …

Quantum key distribution (QKD), has the potential to enable secure communication and
information transfer. In the laboratory, the feasibility of point-to-point QKD is evident from the …

Abstract Quantum key distribution (QKD),–is a theoretically secure way of sharing secret
keys between remote users. It has been demonstrated in a laboratory over a coiled optical …

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 …

In principle, quantum key distribution (QKD) offers information-theoretic security based on
the laws of physics. In practice, however, the imperfections of realistic devices might …

Quantum key distribution (QKD) networks are promising to serve large numbers of users
with information-theoretic secure communication. In QKD networks, the detection-safe …

We perform decoy-state quantum key distribution between a low-Earth-orbit satellite and
multiple ground stations located in Xinglong, Nanshan, and Graz, which establish satellite-to …

Quantum key distribution is a matured quantum science and technology. Over the last 20
years, there has been substantial research and development in this area. Recently, silicon …

Secure communication is crucial in the Internet Age, and quantum mechanics stands poised
to revolutionize cryptography as we know it today. In this Review, we introduce the …