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Qubit Tracker

Willow

Willow in the Qubit Tracker: every value read on the maker's own pages, with its day.

Announced
9 December 2024 — blog.google, read 16 October 2026
Modality
Not confirmed: read on a page that is not the maker’s own
Physical qubits
105 qubits — quantumai.google, read 16 October 2026
Logical qubits
Not confirmed: read on a page that is not the maker’s own
Two-qubit gate fidelity
99.88% — blog.google, read 2 November 2026
One-qubit gate fidelity
99.97% — blog.google, read 2 November 2026
The maker’s own metric
{"name":"Average connectivity","value":3.47} — quantumai.google, read 16 October 2026
Access
Not confirmed: its line was not found on its page, and a second reading did not confirm it
Status
Available — quantumai.google, read 16 October 2026

More from Google

Sources

  1. Meet Willow, our state-of-the-art quantum chip (read 16 October 2026)
  2. Willow Spec Sheet (read 16 October 2026)
  3. Quantum error correction below the surface code threshold (read 16 October 2026)
  4. Willow Early Access Program (read 16 October 2026)
  5. Access and authentication (read 16 October 2026)
  6. Our quantum hardware: the engine for verifiable quantum advantage (read 2 November 2026)
  7. Our quantum hardware: the engine for verifiable quantum advantage (read 2 November 2026)

All of the Qubit Tracker