A record-breaking number of quantum bits, or qubits, have been proven to be entangled inside a quantum computer. There have been previous attempts to achieve this with a relatively large number of ...

As quantum computing develops, scientists are working to identify tasks for which quantum computers have a clear advantage over classical computers. So far, researchers have only pinpointed a handful ...

Several years ago one of us, Toni, asked another of us, Marco, to come to his office at the Institute of Photonic Sciences, a large research center in Castelldefels near Barcelona. “There is a problem ...