Perfect Randomness Realized For the First Time

ETH Zurich researchers say they have generated certified “perfect randomness” for the first time by using a quantum Bell-test setup with two entangled superconducting chips connected by a 30-meter cooled link. “In the long term, this work could play a similar role in digital security as atomic clocks do for timekeeping: a physically certified source of randomness that other systems can rely on,” reports Phys.org. “Possible applications range from the encryption of sensitive communications and digital identities to public randomness services for lotteries and blockchain applications.” From the