For years, physicists have been heralding the revolutionary potential of using quantum mechanics to build a new generation of supercomputers, unbreakable codes, and ultra-fast and secure communication networks. The brave new world of quantum technology may be a big step closer to reality thanks to a team of University of Calgary researchers that has come up with a unique new way of testing quantum devices to determine their function and accuracy. Their breakthrough is reported in today's edition of Science Express, the advanced online publication of the prestigious journal Science.