Quobly's EIC Accelerator Qubits Go Into STMicro's Fab Lines

A fault-tolerant quantum computer will need millions of qubits, Quobly argues, and only the chip industry can make them in those numbers. The Grenoble company, founded in 2022, therefore builds its qubits with standard semiconductor technology. Its qubits are silicon spin qubits built with CMOS FD-SOI technology, changing only about 10% of a standard fabrication process, with their control electronics on the same chip, according to the CORDIS summary of its EIC project.

The EIC Accelerator selected the project, MCQube, at its October 2024 cut-off under the challenge for emerging quantum technology components, and CORDIS records a grant of €2,499,455 from October 2025 to September 2027. In June 2026 Quobly raised a €115 million Series A led by Bpifrance, STMicroelectronics and SEALSQ, with the EIC Fund among the investors. The company has fabricated four-qubit chips and targets a 100-qubit chip by 2027.

A spin-off of French public research

Quobly was founded in Grenoble in 2022 under the name Siquance by Maud Vinet, who has about 20 years of experience in silicon technology development, quantum engineer Tristan Meunier and strategist François Perruchot, building on 15 years of research at the CEA and the CNRS, according to The Quantum Insider. The French register lists the company from 25 November 2022, with Vinet as president and Meunier as managing director, and puts its 2024 workforce at 20 to 49.

Its first round, €19 million in July 2023, was led by Quantonation, Bpifrance, Supernova Invest and Innovacom; Quobly called it the largest seed round by private capital of any European quantum company. In May 2025 it secured €21 million more for a 100-qubit chip project called Q100T: a €15 million grant from Bpifrance under France 2030 and €6 million from its shareholders, Data Center Dynamics reported.

Qubits from modified transistors

Reuters describes Quobly's qubits as modified transistors. Because Quobly's process differs from standard CMOS in only about 10% of its steps, it can run in existing fabs, and the company holds 40 patents on it, according to CORDIS. Milestones so far include one- and two-qubit gates, four-qubit chips and the transfer of the process from a research pilot line to a commercial foundry.

That foundry is STMicroelectronics. About 15 Quobly employees work inside the chipmaker, and CEO Maud Vinet said the company needed "an agreement with this commercial fab" to learn to optimise the technology at industrial yield, Reuters reported via MarketScreener. "We benefit from the economy of scale of this industry," she said.

MCQube and the 100-qubit chip

The EIC project is part of the path to a 100 physical qubit chip by 2027 and a chip with 1,000 logical qubits, which correct each other's errors, by 2030. CORDIS shows no periodic report yet, so there is no public account of the first year; the project page lists only the starting milestones.

1. Transfer to a commercial foundryDoneChips made with STMicroelectronics, which also invested.
2. Four-qubit chipsFabricatedListed by CORDIS; no fidelity figures published.
3. Commercial product with cloud accessDue end of 2026Planned at the Grenoble headquarters.
4. 100-qubit chipToo earlyTarget 2027; the EIC project runs to September 2027.

€115 million and no revenue yet

The Series A was announced on 3 and 4 June 2026, led by Bpifrance, STMicroelectronics and SEALSQ, with the European Innovation Council Fund, Blast, Air Liquide's ALIAD and existing investor Innovacom; the CEA, the CNRS, Quantonation and Supernova Invest remain shareholders, according to a release published by the law firm Goodwin. The money is for research, preparing production at scale and international expansion, and for a first commercial product by the end of 2026.

The register shows no revenue for 2025 and a net loss of €3.93 million.

A European route to quantum hardware

Quobly's approach ties quantum computing to Europe's existing chip industry: research from the CEA and CNRS, manufacturing at STMicroelectronics, and money from Bpifrance, France 2030 and the EIC Fund. If silicon spin qubits scale as planned, quantum processors could be made in the same European fabs as other chips.