Alice & Bob
Alice & Bob is a Superconducting Qubits company founded in 2020 and based in Paris, France. It has raised $138.2M in total funding, most recently a Series B extension in 2026.
Alice & Bob develops cat qubits, a superconducting architecture designed to reduce quantum error-correction overhead. The company closed a €100 million Series B in January 2025 and extended the round with an undisclosed NVentures investment in May 2026. Its Helium roadmap targets a logical qubit built from cat-qubit hardware.
The company's cat qubit design claims to suppress bit-flip errors by orders of magnitude, potentially accelerating the path to fault tolerance.
At a glance
Total raised
$138.2M
Headcount
201-500
Headquarters
Paris
FranceFounded
2020
Status
Private
Subsector
Where Alice & Bob ranks
Top 25 Quantum Computing companies →Funding history
Total raised
$138.2M
Rounds tracked
3
Latest stage
Series B extension
| Date | Stage | Amount | Valuation | Lead investors |
|---|---|---|---|---|
| Jan 28, 2025 | Series B | $104.9M | — | Future French Champions, AVP, Bpifrance |
| Mar 9, 2022 | Series A | $30M | — | Elaia, Bpifrance, Supernova Invest |
