Q-Net Handles Record Traffic Without Ever Sending a Message

The number was impressive and, as ever, widely misunderstood. The Q-Net — the quantum-secured backbone that has carried the world's confidential traffic since 2110 — handled a record volume of key exchanges this week as banks, hospitals and treaty rooms hardened their channels against a summer of instability, and the milestone promptly revived the oldest misconception in the field. "It does not send anything faster, or at all," says Dr. Wei-Lin Tan of the Singapore Institute, who spends as much time correcting the public as advancing the science. Entanglement secures the channel; the message still travels the ordinary network at ordinary speed. What the record reflects is trust, not teleportation: more institutions distributing more unbreakable keys because a plus-two-point-eight world has made the cost of a leak intolerable. At the Singapore Institute, researchers are pushing processor scales toward numbers they will demonstrate in the autumn, but this week's story is humbler. The network that secures the century moved no faster than light, and carried more than ever.