C12

Paris, France
Founded 2020
Commercial
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About

C12 Quantum Electronics develops quantum processors using ultra-pure carbon nanotubes as qubits, founded by twin brothers Matthieu and Pierre Desjardins as École Normale Supérieure spinoff.

2025: Achieved record-breaking 1.3 microsecond coherence times - exceeding silicon quantum dots by 100x and establishing new benchmark for solid-state systems. Five-qubit chip targeted for release by end of 2025 with expected >99% gate fidelities. Pathway to 50+ qubit systems by 2027-2030.

Partnered with CEA to develop next-gen multi-qubit chips at wafer scale. Received EU HiFiQC (High-Fidelity Quantum Computing) HORIZON grant.

Operates Quantum Fab in Paris - unique quantum processor production line with cleanroom. 45 employees (22 PhDs, 18 nationalities). Total funding: €29.3M from 360 Capital, Varsity Ventures, Verve Ventures, EIC Fund, Airbus Ventures, BNP Paribas.

Categories

Qubit Technology

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Key People

Matthieu Desjardins (Co-founder, CEO), Takis Kontos (Co-founder, CTO)

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Quick Facts

Country: France
City: Paris
Founded: 2020
Type: commercial

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