A symbol of collaborative foundation: three master masons lay the cornerstone of a great bridge.
Grenoble-based Quobly has closed a €115 million Series A, led by Bpifrance, SEALSQ, and—critically—STMicroelectronics. The round's structure is a deliberate act of industrial sovereignty. It answers a January Memorandum of Understanding from SEALSQ that floated a possible $200 million investment and a majority stake. The final deal gives SEALSQ a non-majority position and a board seat for its CEO, Carlos Moreira. France decided to build, not sell.
The funding names the true bottleneck in quantum computing. It isn't qubit design. It's fabrication at scale. Quobly is making a processor on STMicroelectronics' 28nm FD-SOI process, a proven, cost-controlled semiconductor technology. The timeline: Alloy Pioneer on the cloud by end of 2026, HPC integration in 2027, and a 1-million-qubit target by 2031.
An agile caravel finds a new route while larger, ice-bound ships remain immobilized.
Why a Swiss semiconductor firm wanted a French quantum startup
The company was founded in 2022 as Siquance by Maud Vinet, Tristan Meunier, and François Perruchot. It raised a €19 million seed round in October 2024 from investors including Bpifrance, the CEA, CNRS, Quantonation, and Supernova Invest. Their bet was specific: build quantum processors using silicon spin qubits on standard CMOS processes, skipping the exotic materials and massive cryogenic systems that define superconducting and trapped-ion approaches.
That choice changes the scaling economics. Superconducting qubits from IBM or Google require dilution refrigerators that operate at millikelvin temperatures. Each added qubit pushes the cryogenic engineering cost higher. Silicon spin qubits on FD-SOI can operate at higher temperatures and use existing semiconductor fabrication infrastructure. The physics problem becomes a manufacturing problem. And STMicroelectronics already runs that manufacturing line.
The deal structure is a geopolitical defense mechanism
Here’s what's confirmed. Bpifrance invested through its Deep Tech 2030 fund, managed on behalf of the French government as part of the France 2030 initiative. SEALSQ's investment came via the SEALSQ Quantum Fund, which has grown from a $20 million initial allocation to $200 million. Other participants include the European Innovation Council Fund, Blast, ALIAD (Air Liquide Venture Capital), and existing investor Innovacom. Carlos Moreira will join Quobly’s Board of Directors.
Here's what the deal means. The January MoU was a real takeover threat. A non-European entity securing majority control of a quantum startup with clear military and industrial applications would have triggered regulatory firestorms and killed export licenses. The Series A syndicate was engineered to neutralize that risk. Bpifrance and the EIC became the sovereign anchors. SEALSQ was brought in as a lead investor but denied control. STMicroelectronics, a Franco-Italian semiconductor giant, became the industrial partner. The round is a geopolitical defense executed through a term sheet.
The roadmap gives the money a job. By end of 2026, the Alloy Pioneer system will be accessible through the cloud. In 2027, the company targets deployment within HPC infrastructures. The 1-million-qubit goal sits at 2031. Those dates matter because they push against the timelines of superconducting competitors who cannot yet show a path to cost-controlled scaling.
The first practical quantum advantage will run on silicon, in Europe
My prediction: By mid-2028, Quobly's Alloy system will claim the first demonstration of a quantum advantage on an industrial problem, likely in computational fluid dynamics for Air Liquide. The processor will exceed 1,000 physical qubits. Air Liquide’s venture arm, ALIAD, isn’t investing for a science experiment. It wants simulation capabilities that cut the cost of gas separation and cryogenic design. A useful quantum computer on those problems doesn’t require fault-tolerant logical qubits. It needs enough physical qubits and the correct algorithmic mapping. The manufacturing partnership with STMicroelectronics makes that number achievable.
The second-order consequences are already visible. STMicroelectronics will announce an expansion of the FD-SOI quantum line to a dedicated fab. The talent market will pivot hard. The industry won't just need quantum physicists. It will need semiconductor engineers who understand CMOS process integration and quantum device physics. Those people are rare, and they will become the single most contested resource in the quantum race. Recruiters will hunt them from CEA-Leti in Grenoble, from IMEC in Leuven, from the teams that built ST’s existing FD-SOI lines.
This rewrites the quantum leaderboard. The consensus framing calls this a validation of silicon spin qubits over superconducting or trapped-ion approaches. That’s the wrong framing entirely. The superconducting giants aren’t wrong about the physics. They’re trapped in a cryogenic cost curve that makes every qubit more expensive than the last. Quobly’s approach defers the cryogenic problem to a higher qubit count while solving fabrication first. If the manufacturing path works, the machine with the cheapest qubit wins. Europe now owns that path.
What this means for operators
For investors: Quantum computing is now a semiconductor manufacturing bet. The value won't accrue to companies with the most elegant qubit. It will accrue to companies with the most repeatable fabrication process. Watch FD-SOI supply chain constraints. STMicroelectronics is the only high-volume FD-SOI fab in Europe. That is a single point of failure and a strategic asset.
For policymakers: The sovereignty play worked. A non-European entity attempted a majority acquisition of a critical technology company. The response was a state-backed financing round that locked in control without banning foreign investment. The Bpifrance and EIC anchor model will become a template for other deep tech sectors.
For technical executives: The talent war is coming. Hybrid CMOS-quantum engineers are not a pipeline problem you can solve in eighteen months. Start building relationships with the French quantum ecosystem now. The Alloy Pioneer cloud access in 2026 is your earliest integration point. If you wait until the HPC deployment in 2027, you're already late.
What Quobly's independence bought is a credible path to a machine that works on an actual industrial problem, not in a lab. The round wasn’t just about money. It was about who gets to build the future, and where.
