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Verification register Frontier Hardware & Quantum

Readiness verdict

Google Quantum AI Magic State Cultivation on Willow

A dated reading of what is claimed, reported, and independently verified in the current evidence.

As of
2026-10-21
Revision
1
Method
v1.3.0

Current reading

Readiness band and full integer triple

AI-assisted assembly · derived results

Readiness band

Emerging

Primary summary from verified readiness

Confidence
72% · fresh
Computed at
2026-10-21T06:32:42.139416+00:00
Claimed
30

Public ambition and stated capability

Reported
28

Observed practitioner reporting

Verified
25

Independently supported evidence

Gap
+5

Claimed leads verified

Evidence strength Critical

Decision

What the current evidence supports

Human editorial judgment · 2026-10-21

Track; not yet

Why
Peer-reviewed hardware evidence (Science) shows the 2024 cultivation theory works physically, with a 40x error cut and 99.99% T-state fidelity, which lowers projected magic-state overhead (estimated at up to 95% of machine capacity under distillation). But yield is about 8%, the demo used a small part of the chip, a storage test missed simulation by ~7x, and the fidelity is a bounded estimate from a self-referential benchmark with no independent replication yet.
Next
Watch for an independent replication, a scaled cultivation demo on larger distance or more qubits, and any move of the RSA-2048 resource estimate; re-evaluate when cultivated-state error approaches 1e-6 or better at scale

Constraints

Blockers

No named blocker is present in the current public projection.

Evidence summary

Derived counts

AI-assisted assembly

Total
6
Tier 1
2
Tier 2
4
Tier 3
0
Supports
1
Contradicts
2
Context
3
Latest observed
2026-10-16

Counts and dates only. Raw signals, private excerpts, trust records, and internal corpus material are not published here.

Publication record

Revisions

Initial public reading

  1. 2026-10-21 Initial recorded band: emerging.

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