Phys.org  April 5, 2023 A popular approach to generating quantum random numbers is to use the quantum vacuum state. While convenient, this approach has been generally limited in speed compared to other schemes. Through custom codesign of optoelectronic integrated circuits and side-information reduction by digital filtering, an international team of researchers (Belgium, Denmark, Italy) experimentally demonstrated an ultrafast generation rate of 100 Gbit/s, setting a record for vacuum-based quantum random number generation by one order of magnitude. Their experimental demonstrations were well supported by an upgraded device-dependent framework that was secured against both classical and quantum side information and that […]