Google’s quantum Willow chip may be able to grow ‘magic states’

Quantum computers make frequent errors, so they need special states, called magic states, to run the gates that give them their power. The usual way to make those states can eat up most of the machine. Google researchers instead encoded one rough magic state on their Willow chip, checked it without destroying it, and grew it across more qubits, cutting errors about 40-fold.

Summary written with AI by HowTechMoves, based on reporting by Scientific American.