PhysicsLIGO mirrors cooled to near absolute zero could probe quantum gravity A set of mirrors used to detect gravitational waves is the largest system ever to be brought close to a frigid quantum state at a temperature of just 77 nanokelvin News
TechnologyAn unhackable quantum internet comes with tough privacy questions The quantum internet will keep bank details secure but also let people plot crimes in complete secrecy unless democratic leaders swiftly improve their record on policing digital privacy Leader