Google demonstrates magic-state cultivation on its Willow processor
Google Quantum AI said it demonstrated magic-state cultivation on its Willow processor, reducing errors by about 40 times compared with uncultivated states.
Event / data period: 2026-10-15
Published: · Updated:
Google Quantum AI said on 15 October that it had demonstrated magic-state cultivation on its Willow quantum processor, reducing errors by about 40 times compared with uncultivated states. The company reported a logical fidelity of 99.99% for the resulting T-states.
Magic states are resources used to perform operations required for universal quantum computing, and producing them can consume substantial computing capacity. The work was published in Science. Google said the method still needs to be demonstrated at larger scale and that technical challenges remain before practical quantum computing.
Data
Results reported by the source
Measurements in Google Quantum AI's announcement dated 15 October 2026.
- · Occurred
Magic-state cultivation on Willow
About 40-fold error reduction versus uncultivated states; 99.99% logical fidelity in T-states.
Methodology
Reports the experimental comparison and logical-fidelity value stated by the source; these are not independent measurements.
Updated:
Subjects and places
Subject proposals
- Artificial intelligenceSuggested
- Subject suggested from the title or summary: AIblog.google ↗
- Scientific researchSuggested
- Subject suggested from the title or summary: Quantumblog.google ↗
Geographic references
Only source-provided geographic references are shown. Opening an external map is optional. Optional story maps use OpenStreetMap. Opening a map sends your IP address and this site’s address to the map provider; location data remains readable as text without loading the map.
- United States · Place role: Coverage · Place type: Country or area · Location precision: RegionalEvidence
- Explicit preserved editorial country/region; no city or national centroid inferredblog.google ↗