Alice & Bob, founded in 2020 in Paris, builds quantum computers based on cat qubits, which are designed to suppress errors in hardware. It raised a €100 million Series B in January 2025 and unveiled its first quantum system, Helium, in June 2026, when France announced it had bought a cat-qubit computer.
At a glance
| Price from | Custom |
| Best for | Research centres backing error-resistant qubit designs |
From Alice & Bob's own website.
What stands out
- Error-resistant qubit design
- French government as a customer
Worth knowing
- Early-stage hardware
- Price not published
How it ranks
Alice & Bob is ranked 5th of 10 in Best Quantum Computing Startups (Lister Score 91.7).
#5 in Best Quantum Computing Startups · Lister Score 91.7
Alice & Bob raised a €100 million Series B in January 2025..
| Rank | Best Quantum Computing Startups | Score |
|---|---|---|
| 1 | PsiQuantum | 96.8 |
| 2 | QuEra Computing | 95.5 |
| 3 | Atom Computing | 94.3 |
| 4 | Oxford Quantum Circuits | 93.0 |
| 5 | Alice & Bob | 91.7 |
| 6 | Quantum Machines | 90.4 |
| 7 | Classiq | 89.1 |
| 8 | Riverlane | 87.8 |
| 9 | Photonic | 86.4 |
| 10 | Q-CTRL | 85.1 |
Frequently asked questions
How does Alice & Bob rank on Lister?
Alice & Bob is ranked 5th of 10 in Best Quantum Computing Startups (Lister Score 91.7).
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