Technology Milestones
Track qubit count, fidelity, and roadmap progress for major quantum computing companies
ion trap
superconducting
neutral atom
photonic
quantum annealing
cat qubit
topological
15
Companies Tracked
4,400
Max Physical Qubits
48
Max Logical Qubits
99.99%
Best 2-Qubit Fidelity
Verified Logical Qubit Achievements
Companies that have demonstrated error-corrected logical qubits. These are verified achievements, not roadmap targets. View sources →
| Company | Logical Qubits | Physical Qubits | Ratio | Technology | QEC Method | Date |
|---|---|---|---|---|---|---|
| Quantinuum | 48 | 98 | 2.0:1 | Ion-trap | Color code | Nov 2025 |
| QuEra Computing | 48 | 280 | 5.8:1 | Neutral-atom | Surface code | Dec 2023 |
| Atom Computing | 24 | 1,225 | 51.0:1 | Neutral-atom | Bacon-Shor | Nov 2024 |
| Google Quantum AI | 1 | 105 | 105.0:1 | Superconducting | Surface code | Dec 2024 |
| Nord Quantique | 1 | 1 | 1.0:1 | Superconducting | GKP bosonic | Feb 2024 |
Last verified: December 2025. Lower PQ:LQ ratio = more efficient error correction.
2-Qubit Gate Fidelity Leaders
Company Roadmaps & Milestones
Track physical and logical qubit progress over time. Solid points = achieved, hollow points = planned.
Quantinuum ion trap
Physical: 98
Logical: 48
Fidelity: 99.92%
Key Milestones
2023 P:32 L:4
2024 P:56 L:12
2024 P:56 L:50
2025 P:98 L:48
2027 P:192
2029 L:200
QuEra Computing neutral atom
Physical: 280
Logical: 48
Fidelity: 99.5%
Key Milestones
2023 P:280 L:48
2024 P:256
2025 L:100
2026 L:1000
Atom Computing neutral atom
Physical: 1,225
Logical: 24
Fidelity: 99.6%
Key Milestones
2023 P:1180
2024 P:1225 L:24
2025 P:1200 L:50
2027 P:10000 L:100
Nord Quantique superconducting
Physical: 1
Logical: 1
Key Milestones
2024 P:1 L:1
2025 L:10
2029 L:100
IonQ ion trap
Physical: 64
Logical: 0
Fidelity: 99.99%
Key Milestones
2023 P:32
2024 P:36
2024 P:64
2024
2025 P:100
2026 P:256
IBM Quantum superconducting
Physical: 1,121
Logical: 0
Fidelity: 99.5%
Key Milestones
2023 P:1121
2024 P:156
2025 P:120
2025
2026
2027
Rigetti Computing superconducting
Physical: 84
Logical: 0
Fidelity: 99.5%
Key Milestones
2024 P:84
2024
2025 P:36
2025 P:100
2026 P:150
2027 P:1000
IQM superconducting
Physical: 150
Logical: 0
Fidelity: 99.91%
Key Milestones
2023 P:20
2024 P:54
2025 P:150
2026 P:150 L:5
2027 P:300
2030 L:100
Infleqtion neutral atom
Physical: 1,600
Logical: 0
Fidelity: 99.73%
Key Milestones
2024 P:1600
2026 L:10
2028 L:100
Pasqal neutral atom
Physical: 200
Logical: 0
Key Milestones
2024 P:100
2025 P:200
2025 P:140 L:2
2026 P:250
2027 P:200 L:20
2028 P:10000
Xanadu photonic
Physical: 216
Logical: 0
Key Milestones
2022 P:216
2024 P:24
2025 P:12
2025
2029 P:100000 L:1000
PsiQuantum photonic
Physical: N/A
Logical: 0
Fidelity: 99.22%
Key Milestones
2024
2025
2025
2025
2027 P:1000000
2033
Alice & Bob cat qubit
Physical: 16
Logical: 0
Key Milestones
2023 P:1
2024 P:16
2025
2025
2025 L:1
2026
Microsoft Azure Quantum topological
Physical: 8
Logical: 0
Key Milestones
2024 L:24
2024
2025 P:8
2025 L:2
2028 L:1000
D-Wave quantum annealing
Physical: 4,400
Logical: 0
Key Milestones
2023 P:5000
2024 P:4400
2026
2028
2030 P:100000