Craig A. Holliman

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.

When a quantum computer errs, iceberg codes silently correct the glitches, packing lots of protected data into a small number of real atoms. On a 98-ion processor, a calculation with error correction yielded a more accurate result than without it—proof that reliable quantum machines aren’t just scie