C Grade C
IQM Quantum Computers Emerald: Two-qubit gate fidelity
99.5% %
As stated in the source: “median two-qubit gate fidelity 99.5%; maximum up to 99.85%”
Caveats
Company blog post with no method or measurement date; launch-time figure that may have changed.
Not used for rankings. Grade C: announcement-level evidence is shown with a warning and never ranked.
- Set-up
- Median across qubit pairs (CZ gate); method not stated.
- Method
- Standard
- Compared only with
- results in the group “median”
- Measured
- Not stated
- Published
- 5 August 2025
- Measured by
- IQM Quantum Computers
- Independent of the maker
- No
- Peer-reviewed
- No
- Repeated by others
- Not yet
Source
New on IQM Resonance: IQM Emerald - almost 3x qubits for the same reliable quality, IQM Quantum Computers. Announcement.
Comparable results
| Machine | Value | Set-up | Published | Measured by | Grade | Record |
|---|---|---|---|---|---|---|
| Rigetti Computing Ankaa-3 | 99.5% | median | 23 Dec 2024 | Maker | C | r-000040 |
| IonQ Forte | 99.536% | median | 7 Nov 2024 | Maker | B | r-000030 |
| IQM Quantum Computers Garnet | 99.5% | median | 22 Aug 2024 | Maker | B | r-000044 |
| Rigetti Computing Cepheus-1-108Q | 98.82% | median | – | Maker | B | r-000041 |
History
- 27 October 2026: added
Spotted a mistake? Report an error, quoting r-000047.