David T. Stephen

Using a quantum computer, researchers simulated a material and for the first time observed how electron pairs form—the ones responsible for superconductivity. Previously they were only detected indirectly. The experiment proves that quantum machines bring us closer to superconductors that work witho

A 98-ion processor amplifies weak randomness to near perfection. Quantum entanglement and ultrafast measurements give an attacker just 30 ms—and a safe radius of 4,500 km.