Google Cuts Quantum Computing Errors 40-Fold Google Quantum AI has demonstrated “magic state cultivation” on its Willow processor, achieving a 40-fold reduction in errors and 99.99% logical fidelity for T-states. The technique could help solve a major bottleneck in building fault-tolerant quantum computers. If scaled successfully, such machines could eventually threaten Bitcoin’s digital signatures. The breakthrough doesn’t necessarily bring Q-day closer, but it strengthens the case for preparing crypto for a post-quantum future. Larger-scale demonstrations are still needed.
