Physical qubits (Qubits)
How many working physical qubits the machine has.
When results can be compared
A count says nothing about quality. Gate-based machines and annealers are counted separately, and so are machines and single experiments.
Where it comes from
Standard measure.
- Type
- Measurement, system level
- Unit
- qubits
- Better is
- Higher
- Applies to
- all machines
Results
| Machine | Value | Set-up | Published | Measured by | Grade | Record |
|---|---|---|---|---|---|---|
| IBM Nighthawk r2 | 120 | gate based | 31 Aug 2026 | Maker | B | r-000015 |
| Quantinuum Helios | 98 | gate based | 17 Jun 2026 | Maker | B | r-000016 |
| Quantinuum H2 | 56 | gate based | 2025 | Maker | B | r-000022 |
| Google Willow | 105 | gate based | 9 Dec 2024 | Maker | B | r-000008 |
| Atom Computing Ytterbium atom array | 256 | gate based | 18 Nov 2024 | Maker | B | r-000036 |
| IonQ Tempo | 100 | gate based | – | Maker | B | r-000026 |