A £2.5 million seed round positions Quantcore at the intersection of quantum hardware ambitions and geopolitical anxiety over who controls the critical materials beneath the hype.
There's an uncomfortable truth hiding beneath quantum computing's moonshot promises: the hardware depends on materials most Western governments don't control. Glasgow-based Quantcore closed a £2.5 million seed round on February 24, betting it can turn that vulnerability into opportunity.
The funding—led by PXN Ventures and Blackfinch Ventures, with Scottish Enterprise, Quantum Exponential, and STAC joining—arrives as national security planners across Europe and North America confront supply-chain realities they'd rather not acknowledge. CEO Dr. Jack Brennan frames Quantcore's mission plainly: building "UK sovereign manufacturing capability" for quantum computing components. What that really means is reducing dependence on Brazil for niobium, the metal that makes superconducting quantum processors possible.
The Niobium Bet
Quantcore, a University of Glasgow spin-out, manufactures niobium-based superconducting qubits, resonators, and SQUID sensors. That material choice isn't arbitrary.
Aluminum has dominated early superconducting quantum chips—IBM, Google, and others have built their processors around it. But niobium junctions operate at higher temperatures, above 200 millikelvin compared to aluminum's sub-20mK sweet spot. They also run at higher frequencies: peer-reviewed demonstrations hit 11–24 GHz, with experimental claims pushing toward 72 GHz. Higher operating temperatures mean cheaper, less Byzantine refrigeration systems. Higher frequencies enable denser qubit packing and faster gate operations.
Those advantages matter when scaling from dozens to thousands of qubits.
Niobium isn't exotic in the way quantum materials often sound. Medical imaging already depends on it—MRI magnets use niobium-titanium conductors, MEG brain scanners rely on niobium SQUID sensors. The medical sector consumes most global niobium-titanium wire production, making MRI the largest helium consumer in healthcare. But quantum computing introduces a new demand vector, and here's where the geopolitics get uncomfortable: Brazil's CBMM dominates global niobium supply.
The U.S. Geological Survey added niobium to its 2025 critical minerals list, flagging high supply disruption risk tied to that Brazilian concentration. For the UK—whose National Quantum Strategy commits £2.5 billion from 2024 to 2034, with £670 million specifically for quantum computing—relying on a single foreign source for a material underpinning both defense-relevant computing and secure communications feels like a gap worth closing.
Perhaps more urgently than the Treasury might admit.
Building From Academic Infrastructure
Quantcore's manufacturing leverages the University of Glasgow's James Watt Nanofabrication Centre, which houses ultra-high-vacuum sputtering, electron-beam lithography, and low-temperature testing infrastructure that has supported over 300 companies. The facility hosts the £1.5 million EPSRC-funded "Super-CT" project—Superconductor Prototyping for Critical Technologies—which partners with Quantcore to establish what both describe as the UK's first niobium superconducting circuit prototyping foundry.
Prof. Martin Weides, who leads Super-CT, positions Scotland's central belt as a concentration of expertise ready to drive domestic supply-chain advances. Whether that regional optimism translates into volume production capable of competing with better-funded efforts in Finland, the Netherlands, or Taiwan remains an open question.
Shifting Hardware Priorities
Quantcore enters a quantum hardware market that's moved past qubit-count bragging rights. Google's December 2024 "below-threshold" error-correction milestone with its Willow chip and IBM's 156-qubit Heron processor with modular couplers signal a new phase: quality and interconnection matter more than raw tallies.
McKinsey's 2025 Quantum Technology Monitor projects quantum technology revenues—computing, communications, and sensing combined—could reach $97 billion by 2035 and $198 billion by 2040. Quantum computing companies specifically are expected to surpass $1 billion in revenue during 2025. That trajectory depends on supply chains maturing beyond academic prototyping.
Finland's IQM Quantum Computers has delivered 30 full-stack superconducting systems to research centers including VTT, LRZ, and Jülich, with contracts for 150-qubit (2026) and 300-qubit (2027) systems focused on error-correction research. Netherlands-based QuantWare markets merchant quantum processing units and claims its 3D VIO architecture scales to 10,000-qubit processors. Whether that claim holds under scrutiny is another matter, but QuantWare positions itself as a high-volume provider in an industry still measuring production in dozens, not thousands.
The bottlenecks aren't just qubits. Cryogenics and control electronics are scaling in parallel—Bluefors expanded its U.S. manufacturing in Syracuse, New York, increasing capacity by 45% to become what it calls the largest dilution refrigerator producer in North America. Zurich Instruments scaled its quantum control system to 448 microwave channels, anticipating multi-chip architectures that demand dense I/O and real-time feedback for error correction.
The Sovereignty Angle
Public procurement anchors near-term quantum revenue in ways that make Quantcore's positioning strategic. BCG's 2024 update on quantum computing economics projects a $90–$170 billion provider market by 2040, with public orders accounting for more than half of demand through 2030. National security applications—post-quantum cryptography migration, secure communications, defense sensing—carry sovereignty requirements that favor domestic suppliers or allied partners over global commodity markets.
The U.S. Office of Management and Budget's M-23-02 memo mandates federal agencies inventory cryptographic systems and plan post-quantum migration through 2035. NIST finalized three post-quantum cryptography standards in August 2024, with a fourth (FALCON/FN-DSA) forthcoming. The UK's National Quantum Computing Centre explicitly includes supply-chain development in its remit.
SEEQC's December 2025 partnership with Taiwan's ITRI to build an advanced superconducting chip manufacturing line frames itself around "supply-chain resilience among US-allied partners." That phrasing—allies, not just partners—captures the ambient Cold War 2.0 subtext shaping hardware investment decisions.
Brennan emphasizes the "code-breaking potential" of quantum computing as justification for local manufacturing. Whether that framing overstates near-term cryptographic threat is debatable, but it aligns with government spending priorities. The Super-CT foundry gives Quantcore a tangible asset—domestic fabrication capacity—that resonates with policymakers writing checks for sovereign capability.
Which, in the current climate, may matter more than technical superiority.
Proving Volume Production
The seed funding will expand Quantcore's team across design, manufacturing, cryogenic testing, and commercial roles. The company offers both off-the-shelf and bespoke components, targeting quantum computing companies, research labs, and potentially defense contractors.
Success hinges on demonstrating volume production with performance that matches or exceeds aluminum-based alternatives at lower total system cost. Niobium's elevated-temperature operation promises to enable more control electronics inside dilution refrigerators, reducing the complexity and power draw of room-temperature-to-millikelvin signal chains. That energy efficiency narrative matters in a market where even a few watts of heat load at cryogenic temperatures can dominate operating costs.
Realizing those gains requires solving packaging, materials interfaces, and junction barrier uniformity at scale—problems that separate lab demonstrations from production lines. The jump from university cleanroom to commercial foundry has claimed more than a few quantum hardware startups.
Which Model Wins?
The quantum hardware stack remains fragmented in ways that mirror debates from earlier semiconductor eras. Full-stack integrators like IBM and Google vertically integrate component fabrication. Merchant suppliers like Quantcore and QuantWare bet on disaggregation and specialization.
Which model wins likely depends on whether quantum computing follows semiconductor industry patterns—where TSMC-style foundries dominate—or remains vertically integrated like aerospace. For now, governments are funding both paths, hedging their bets with public money while the technology is still taking shape.
Quantcore has positioned itself at a useful intersection: technical ambition meeting geopolitical anxiety. Whether £2.5 million and a university cleanroom can scale into a genuine alternative to Brazilian niobium dependence is a question that will take years to answer. But in an industry where sovereign capability has become code for "we don't want to depend on anyone else's supply chains," Brennan has found a pitch that governments want to hear.
And in quantum computing's current funding environment, that might be enough.
