Qubit Tracker
Sycamore
Sycamore in the Qubit Tracker: every value read on the maker's own pages, with its day.
- Announced
- 23 October 2019 — research.google, read 20 October 2026
- Modality
- Superconducting — quantumai.google, read 20 October 2026
- Physical qubits
- 54 qubits — research.google, read 20 October 2026
- Logical qubits
- Not confirmed: The Google pages reviewed do not print a demonstrated logical-qubit count with a code and paper.
- Two-qubit gate fidelity
- Not confirmed: The Google pages reviewed do not print a two-qubit gate fidelity as a percentage with a named statistic; “high-fidelity” is not a numeric value.
- One-qubit gate fidelity
- Not confirmed: The Google pages reviewed do not print a one-qubit gate fidelity as a percentage with a named statistic.
- The maker’s own metric
- Not confirmed: The pages reviewed do not print an eligible single-number system metric. The 200 seconds describes one benchmark run, not the machine; the datasheet’s repetition rate is printed as a range.
- Access
- Not confirmed: two readings disagree: cloud and research
- Status
- Not confirmed: two readings disagree: available and retired
More from Google
Sources
- Quantum Supremacy Using a Programmable Superconducting Processor (read 20 October 2026)
- Quantum Computer Datasheet (read 20 October 2026)