Physicists have developed a spectral-filtering technique that strips away unwanted extra photons from quantum light sources, ...

Charles H. Bennett and Gilles Brassard have spent more than four decades proving that the strange behavior of quantum ...

Quantum key distribution (QKD) exploits the intrinsic properties of quantum mechanics to enable the secure exchange of cryptographic keys between distant parties. By utilising quantum states of light, ...

But the experiments were set up in ways that meant we could only use them to determine that this superposition occurred in ...

Scientists have unveiled a new approach to ultra-secure communication that could make quantum encryption simpler and more ...

Quantum computers, systems that process information leveraging quantum mechanical effects, could outperform classical computers on some computationally demanding tasks. Despite their potential, as the ...

The ability to send quantum information securely, known as quantum key distribution, is one of the most practical (if difficult) applications of quantum science. A new study demonstrates the ...

Continuous-variable quantum cryptography has emerged as a significant branch of quantum cryptography, with continuous-variable quantum key distribution (CVQKD) at its core. However, compared to ...

For the first time, a team of physicists in Austria has carried out an experiment that appears to verify the principle of ...

Andrew Jenkins has worked as an information analyst for an intelligence agency in Washington, D.C., for over 14 years. He is the author of the 2022 book, The Devil Made Crypto. Follow him on LinkedIn.

In the race to secure digital infrastructure against the looming threat of quantum computing, space has emerged as an indispensable theater. Satellites, once primarily vehicles for reconnaissance and ...