CEA-Leti and CNRS spin-off Quobly raises €115 million to industrialise silicon-based quantum computers

Quobly, a Grenoble-based quantum computing company, today announced the closing of a €115 million Series A financing to accelerate the industrialisation of its silicon-based quantum computers and launch its first commercial product by the end of 2026.

The round was led by Bpifrance, SEALSQ and STMicroelectronics, with participation from the European Innovation Council (EIC), Blast, Air Liquide Venture Capital (ALIAD) and existing investor Innovacom. Existing shareholders also include the CEA, CNRS, Quantonation and Supernova Invest. 

Maud Vinet, CEO and co-founder, Quobly, said, “This financing marks a transition from technology validation to industrial execution. Over the past two years, we have demonstrated that silicon qubits can be developed within semiconductor manufacturing processes and integrated into a system architecture. 

“With this Series A, we are accelerating the deployment of our first commercial systems and building a quantum computing platform designed to integrate into existing computing infrastructures. Our objective is to make quantum computing deployable, scalable and usable within real industrial environments.”

Founded in 2022 by Vinet, Tristan Meunier, and François Perruchot, Quobly develops silicon-based quantum computers using proven semiconductor manufacturing processes. The company is a spin-off from CEA-Leti (a French government-funded technological research organisation) and CNRS (French National Centre for Scientific Research). It is focused on making quantum computing scalable, manufacturable and deployable to grow the quantum computing market.

Quobly states that its approach is based on the use of Fully Depleted Silicon On Insulator (FD-SOI) technology on 300 mm wafers, leveraging established semiconductor manufacturing processes to address key challenges in scalability, yield and reproducibility. The company develops silicon qubits designed for dense integration and compatibility with industrial fabrication standards.

As part of this strategy, Quobly states that it leverages semiconductor-grade capabilities across the broader semiconductor ecosystem through strategic partnerships with industrial leaders, including STMicroelectronics, Air Liquide, Soitec and Orano. 

These collaborations accelerate the transfer of Quobly’s quantum technologies into advanced manufacturing environments and support the industrial integration of process control, materials engineering, cryogenics and yield optimisation from the earliest stages of deployment. The company claims that its industrial-first approach sets it apart by prioritising manufacturability and co-development of technology and systems. 

The company highlighted its progress from early validation to the production of its first commercial systems. The first computer in Quobly’s Alloy product line is called Alloy Pioneer, which is designed for early adopters in high-performance computing and research environments. The system will be accessible through the cloud in 2026, before deployment within HPC infrastructures in 2027.

Alloy Pioneer is accessible through Alloy Forge, Quobly’s quantum application development environment, enabling users to develop and validate applications under realistic hardware constraints.

The company points out that its quantum computers are designed to integrate into existing HPC and data-centre infrastructures, with compatible footprint, power supply and utilities requirements, enabling straightforward deployment.

It plans to increase the performance and scalability of its quantum computer product line, accelerate the industrialisation and scaling of its silicon quantum processors, and deploy its first Alloy systems into customer cloud and HPC environments. These efforts will be supported by the continued expansion of Quobly’s hardware, control electronics and software stack, consistent with its system-level co-design approach.

Laurent Malier, Executive Vice President, Global Technology R&D, STMicroelectronics, said, “Quantum computing will achieve the scale needed by HPC customers only if breakthrough quantum systems can be industrialised and integrated with semiconductor-grade rigour and backed by a robust ecosystem. We are leveraging years of shared expertise in FD-SOI and deep technological collaboration to accelerate the commercialisation of Quobly’s products, thanks to a 300mm silicon fab environment. ST’s investment in Quobly further demonstrates our commitment to support its global ambitions.”

With this new capital, it plans to support continued R&D, industrialisation efforts and international commercial expansion. This Series A follows Quobly’s €19 million Seed phase (2023-2025), during which the company demonstrated the feasibility of developing silicon qubits within semiconductor manufacturing processes, and established a system-level architecture integrating device, control and software layers. 

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