Quantum computers promise not only to outperform classical machines for certain important tasks, but also to preserve privacy of computation. For example, the blind quantum computing protocol enables secure delegated quantum computation, where a client […]
A collaboration between the Universities of Hong-Kong, Grenoble and Vienna, as well as the Austrian Academy of Sciences has revealed novel techniques to reduce noise in quantum communication. The primary approach to overcome these noise […]
Continuous-Variable Quantum Key Distribution (CV-QKD) enables information-theoretically secure key exchange between two parties using the continuous-variable properties of the quantized electromagnetic light field. The secret key rate of a CV-QKD system is limited by excess […]
Recent experimental breakthroughs in satellite quantum communications have opened up the possibility of creating a global Quantum Internet using satellite links. This approach appears to be particularly viable in the near term, due to the […]
A team of researchers from DNRF center bigQ at DTU Physics have, in collaboration with the University of Sheffield, University of York and the Danish company Cryptomathic A/S, developed a Quantum Random Number Generator (QRNG) […]
A team of researchers from Germany, Russia and UK has designed and experimentally demonstrated an ultrafast optical Quantum Random Number Generator (QRNG) that uses a totally untrusted photonic source. While considering completely general quantum attacks, […]
A team of Chinese researchers has used drones to create a prototype of a small airborne quantum network and to send entangled particles from one drone to another and from a drone to the ground. […]
A research team from the University of Science and Technology of China has made security analysis and improvement of Source Independent Quantum Random Number Generators (SI-QRNGs) with imperfect devices. By studying the actual characteristics of […]
A team at the University of Science and Technology of China (USTC) has demonstrated the teleportation of high-dimensional states in a three-dimensional six-photon system. Compared with two-dimensional systems, high-dimensional system quantum networks have the advantages […]
Quantum Key Distribution (QKD) protocols are performed by sending a sizeable, but finite, number of quantum signals between the distant parties involved. Many QKD experiments, however, predict their achievable key rates using asymptotic formulas, which […]
