Google Quantum AI hits 99.99% logical fidelity with Willow
According to a post by Sundar Pichai citing Science, Google Quantum AI demonstrated first hardware magic state cultivation on the Willow processor, delivering a 40x error reduction and 99.99% logical fidelity versus prior methods.
SourceAnalysis
Google Quantum AI demonstrated magic state cultivation on physical hardware for the first time using the Willow processor, according to an announcement by Sundar Pichai on October 15, 2026.
The result delivered a 40x error reduction versus prior methods and reached 99.99 percent logical fidelity, with the work published in Science.
Sundar Pichai
@sundarpichaiCEO, Google and Alphabet