Loophole found that makes quantum cloning possible
Backing up information on quantum computers is tricky RUSLANAS BARANAUSKAS/SCIENCE PHOTO LIBRARY/Alamy In quantum mechanics, the idea that quantum information can’t be duplicated is ironclad – or at least, it was. A surprising approach to backing up qubits, the basic units of quantum computers, appears to allow a sidestepping of this fundamental law of physics….
