C Grade C
IonQ Tempo: Two-qubit gate fidelity
99.9% %
As stated in the source: “99.9%”
Caveats
Vendor spec table with no method, statistic (median/average), date or uncertainty. Treat as headline claim only. No method or statistic is stated.
Not used for rankings. Grade C: announcement-level evidence is shown with a warning and never ranked.
- Set-up
- Vendor specification table, row '2QG fidelity'
- Method
- Standard
- Compared only with
- results in the group “statistic not stated”
- Measured
- Not stated
- Published
- Not stated
- Measured by
- IonQ
- Independent of the maker
- No
- Peer-reviewed
- No
- Repeated by others
- Not yet
Source
IonQ quantum systems comparison, IonQ. Company technical document.
Comparable results
| Machine | Value | Set-up | Published | Measured by | Grade | Record |
|---|---|---|---|---|---|---|
| Infleqtion Cesium atom array | 99.35% | statistic not stated | 25 Aug 2025 | Maker | B | r-000038 |
History
- 27 October 2026: added
Spotted a mistake? Report an error, quoting r-000027.