Kristiaan De Greve stood at a chalkboard in Leuven last week and described a problem most semiconductor engineers have never had to solve: how to scale qubits to one billion while keeping them stable enough to compute. The answer, Imec's SPINS coordinator explained, requires cleanroom infrastructure so precise it makes conventional chipmaking look rough. That precision does not come cheap. It also does not come from venture capital alone. So Europe cut a €50 million check.
SPINS, which launched in April 2026, is one of six quantum pilot lines funded under the European Union's Chips Act—a bloc-level commitment to build sovereign manufacturing capacity for technologies Europe currently depends on others to produce. Unlike venture-backed quantum startups operating in isolated labs, SPINS is a 25-partner consortium spanning Imec, Fraunhofer IPMS, VTT, CEA-Leti, Infineon, STMicroelectronics, TU Delft, and the University of Jyväskylä, among others. The scale of that coalition and the institutional backing behind it marks a shift in how quantum hardware gets built. This is not a research grant with publication deadlines. It is a factory-floor initiative designed to take spin-qubit physics and industrialize it using the same cleanroom disciplines, process controls, and manufacturing pipelines that built modern Europe's classical chip ecosystem.
The technical problem SPINS is attacking is deceptively straightforward to state and brutally difficult to solve. Spin qubits—tiny magnetic moments trapped in silicon or germanium—are appealing because they play nicely with CMOS technology. Unlike superconducting qubits, which require dilution refrigerators and custom wiring, or trapped-ion systems, which need lasers and vacuum chambers, spin qubits can theoretically run on semiconductor fabrication infrastructure that already exists. The catch: nobody has proved that infrastructure can actually manufacture them reliably at volume. SPINS is working across three parallel technology platforms—Si/SiGe, Ge/GeSi, and SOI—to find out which one scales. Imec is pushing the Ge/GeSi approach on 300mm wafers, the standard industrial wafer size used in high-volume chip production. If that works, you get mass production. If it does not, you get an expensive lesson about why it does not.
The timing matters. Right now, the quantum industry is clustered around 100-qubit systems that can demonstrate computational advantage on narrow problems. Bain & Company estimates that practically useful quantum computers—systems that could do things like drug discovery or logistics optimization—will need 1,000 to 10,000 logical qubits, a milestone expected sometime in the mid-2030s. The gap between today's demonstrators and that scale is not just an engineering problem. It is a manufacturing problem. You cannot build a thousand-qubit system in a lab. You build it in a factory. The EU Chips Act is betting that if Europe builds the factory first, Europe builds the thousand-qubit system. That is the strategic logic. SPINS' 2031 target for mass-producible, high-maturity-level quantum chips aligns with the moment when quantum systems transition from research curiosities to tools companies will actually pay for.
Who benefits from this is clear: European quantum startups and SMEs get access to multi-project wafer runs—shared fabrication cycles where multiple research groups and companies can test designs on industrial wafers without funding their own foundry. That lowers the bar for anyone building quantum control electronics, cryogenic interfaces, or quantum software. The PDK (process design kit) approach is critical here. Instead of each group reverse-engineering a process, SPINS publishes standardized design rules. European academics and venture teams suddenly compete on innovation instead of on who can afford a cleanroom. Infineon and STMicroelectronics, meanwhile, get access to early-stage quantum technologies while betting their massive fabrication expertise on a platform that could matter in five to ten years. Fraunhofer IPMS brings materials science. CEA-Leti brings silicon photonics and cryogenic packaging. The coalition hedges technological bets by pursuing three platforms in parallel, but it also dilutes resources. A single-focus effort might move faster.
What SPINS does not do is threaten U.S. quantum superiority in the next 36 months. IBM's Heron processor and Intel's Horse Ridge cryogenic control architecture are further along. Google's Willow—which Google announced access to on April 18, 2026, the same day SPINS went public—represents a different technological path (superconducting qubits) but one Google clearly intends to industrialize faster. The real threat SPINS poses is strategic, not tactical. If Europe manufactures sovereign spin-qubit chips by 2031, and if those chips prove reliable enough for commercial systems, then European companies will not be buying quantum processors from the United States. They will buy them from European suppliers who buy Imec's quantum-grade wafers. That shifts leverage. That also explains why the EU Chips Act funded six parallel pilot lines instead of one. No single platform wins yet. Europe is hedging by building industrial capacity across multiple bets simultaneously. The bill for all six is not yet public, but SPINS at €50 million suggests we are talking about a few hundred million euros total. Compare that to the roughly $16 billion the U.S. Chips and Science Act allocated for advanced semiconductor manufacturing, and you see Europe playing a smaller hand, but with serious chips in the pot.
Here is what actually matters: the question is not whether SPINS works—it probably will produce some functional quantum chips by 2031, because Imec has been scaling semiconductor manufacturing for 40 years and knows how to make hard things work in a cleanroom. The question is whether those chips will be better or cheaper than the alternative U.S. systems already in production. If they are, SPINS changes the competitive landscape for quantum hardware. If they are competitive but not superior, they still matter because European companies get a non-U.S. supply chain. If they lag, then SPINS becomes an expensive hedge that lost. The tell will come in three places: first, when the first MPW runs open to external researchers, watch the yield and fidelity numbers. Yield below 50 percent on quantum dots is a red flag. Fidelity below 99.5 percent on two-qubit gates is a miss. Second, watch whether European quantum startups actually use the MPW access or continue shopping their designs to U.S. foundries. If they use it, SPINS is working. If they do not, it means European manufacturing is not competitive yet. Third, watch for any joint announcements between SPINS partners and U.S. quantum companies—partnerships like IBM and Infineon or Intel and Fraunhofer would suggest Europeans are hedging by staying connected to the U.S. ecosystem rather than fully committing to independence.
The concrete things to track: First, the first MPW run announcement and the published yield and fidelity data from that run. Imec has not disclosed dates yet, but expect 2027 or early 2028. Second, the 300mm Ge/GeSi fidelity benchmarks—Imec said they are targeting record-fidelity silicon quantum dot qubits on 300mm wafers, so any published measurement of two-qubit gate fidelity will signal whether they are tracking toward the 2031 goal. Third, whether Google Quantum AI receives SPINS consortium applications for early access to Willow—if European teams with Imec or Fraunhofer affiliations get selected, it signals collaboration across the Atlantic. If none do, it signals insularity or competitive separation. Fourth, any announcement from IBM or Intel responding directly to SPINS or committing additional capital to U.S. quantum manufacturing. Silence would be telling. Finally, watch the PDK adoption rate among European quantum hardware startups and academic groups. If outside teams are using the standardized design rules SPINS publishes, the ecosystem is building. If they are not, SPINS is infrastructure with nobody using the road.