Quantinuum, with bases in Broomfield, Colorado and Cambridge, UK, builds trapped-ion quantum computers. It launched Helios, with 98 fully connected physical qubits, in November 2025.
At a glance
| Price from | Custom |
| Best for | Enterprises needing high-accuracy trapped-ion hardware |
From Quantinuum's own website.
What stands out
- High-fidelity qubits
- Fully connected qubit layout
Worth knowing
- Fewer physical qubits than neutral-atom rivals
- Price not published
How it ranks
Quantinuum is ranked 3rd of 10 in Best Quantum Computing Companies (Lister Score 94.6).
#3 in Best Quantum Computing Companies · Lister Score 94.6
Quantinuum closed its initial public offering on Nasdaq, under the ticker QNT, in June 2026..
| Rank | Best Quantum Computing Companies | Score |
|---|---|---|
| 1 | IBM Quantum | 96.9 |
| 2 | Google Quantum AI | 95.7 |
| 3 | Quantinuum | 94.6 |
| 4 | IonQ | 93.4 |
| 5 | PsiQuantum | 92.1 |
| 6 | QuEra Computing | 90.8 |
| 7 | D-Wave Quantum | 89.5 |
| 8 | Atom Computing | 88.2 |
| 9 | IQM Quantum Computers | 86.9 |
| 10 | Rigetti Computing | 85.6 |
Frequently asked questions
How does Quantinuum rank on Lister?
Quantinuum is ranked 3rd of 10 in Best Quantum Computing Companies (Lister Score 94.6).
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