B Grade B
IBM Heron r3: Layer fidelity (error per layered gate)
2.69 × 10⁻³ error per layered gate
As stated in the source: “2Q error (layered) 2.694E-3”
Caveats
Live calibration value that changes over time; the page shows no timestamp. Snapshot read on 27 Oct 2026. Recorded as EPLG (an error); layer fidelity itself is not shown. Lower is better. Live value from IBM's calibration table, read on 27 Oct 2026; IBM updates it regularly.
- Set-up
- ibm_boston. Average EPLG in a layered chain of 100 qubits, from IBM's current calibration data.
- Method
- Error per layered gate (EPLG) on a 100-qubit chain; EPLG_100 = 4/5(1 - LF^(1/99))
- Compared only with
- results in the group “eplg 100 ibm”
- Measured
- Not stated
- Published
- Not stated
- Measured by
- IBM Quantum
- Independent of the maker
- No
- Peer-reviewed
- No
- Repeated by others
- Not yet
Source
IBM Quantum Platform: Compute resources (table view), IBM Quantum. Company technical document.
Comparable results
| Machine | Value | Set-up | Published | Measured by | Grade | Record |
|---|---|---|---|---|---|---|
| IBM Heron r2 | 3.44 × 10⁻³ | eplg 100 ibm | – | Maker | B | r-000012 |
| IBM Nighthawk r2 | 2.61 × 10⁻³ | eplg 100 ibm | – | Maker | B | r-000013 |
History
- 27 October 2026: added
Spotted a mistake? Report an error, quoting r-000010.