High-NA EUV quantum computing fabrication just moved from theoretical ambition to demonstrated hardware. On May 19, 2026, imec announced what it calls a world first at ITF World in Leuven, Belgium: a quantum dot qubit device built using High-NA EUV lithography, the same class of advanced chipmaking tools now used for leading-edge AI and memory processors. The claim carries a caveat — imec’s own press release uses the phrase “to the best of our knowledge” — but the underlying achievement is real and the implications are significant.
Key Takeaways
- Imec fabricated a functioning qubit network with gaps of barely 6 nanometers using High-NA EUV lithography.
- At that scale, millions of quantum bits could theoretically be integrated onto a single chip, according to imec.
- The announcement was made at ITF World in Leuven, Belgium on May 19, 2026.
- Silicon-based qubits can reuse the existing semiconductor scaling ecosystem, giving them a manufacturing advantage over other qubit architectures.
- Imec’s quantum work uses 300mm industrial fabrication tooling, the same standard as leading commercial chip fabs.
What imec actually built — and what High-NA EUV quantum computing means
Imec fabricated a functioning network of quantum dot qubits with gaps between elements of barely 6 nanometers. That level of precision required High-NA EUV lithography — a tool that only recently became available for semiconductor production and that pushes patterning resolution beyond what previous EUV generations could achieve. The device was built by first laying down a base layer of precise patterns using High-NA EUV, then fabricating the qubit network on top of that patterned foundation.
Why does the tool matter? Most quantum hardware today is manufactured using bespoke, low-volume processes that bear no resemblance to how commercial chips are made. Bringing High-NA EUV into the picture means qubit fabrication can, in principle, follow the same process flows and toolchains that fabs already use for latest logic and memory. That’s not a small thing. It’s the difference between a scientific instrument and a manufacturable product.
Imec’s press release is careful not to overclaim. The phrase “to the best of our knowledge” is doing real work there. No yield data, error rates, or commercial timeline accompany the announcement. What exists is a proof-of-concept device — significant, but a long way from a production quantum chip.
Why silicon-based qubits have a manufacturing edge over competing approaches
Silicon-based qubits benefit from decades of accumulated semiconductor process knowledge that other qubit architectures simply cannot access. Sofie Beyne, project leader and quantum integration engineer at imec, put it directly: “We can leverage decades of semiconductor innovation and reuse the entire ecosystem of silicon scaling, moving quantum devices beyond lab experiments to large-scale, manufacturable systems. This is where silicon-based qubits have a clear advantage”.
That ecosystem advantage is concrete. Imec already fabricates spin qubit devices — which resemble standard CMOS transistors in their structure — on its 300mm industrial fabrication line. That’s the same wafer size used by leading commercial chip manufacturers. Competing qubit technologies, including superconducting qubits used by several major quantum programs, require dilution refrigerators and fabrication processes that have no overlap with standard silicon fabs. They face a fundamentally different scaling challenge.
The theoretical upside of getting density right is substantial. Imec says that at 6-nanometer qubit gaps, millions of quantum bits could theoretically be integrated onto a single chip. That’s a projection, not a measured result — but it frames the ambition correctly. Quantum computers that could meaningfully simulate physical processes or accelerate drug discovery need qubit counts that current approaches cannot approach.
How does this fit into the broader semiconductor roadmap?
High-NA EUV is already the tool of choice for next-generation logic and memory chips. The fact that imec has now applied it to qubit fabrication suggests a potential convergence: quantum devices could eventually follow the same advanced manufacturing roadmap as AI accelerators and high-bandwidth memory. That would compress the timeline from laboratory prototype to manufacturable system considerably.
The key word is “eventually.” Imec has demonstrated that the fabrication approach works at a device level. Scaling that to full wafers, achieving acceptable qubit coherence times at production volumes, and integrating classical control electronics alongside quantum elements are all unsolved problems. The announcement at ITF World is a milestone, not a finish line. But milestones matter — they change what investors, chipmakers, and policymakers believe is achievable and on what schedule.
Imec’s position as an independent research organization with access to 300mm industrial tooling makes it a credible source for this kind of result. This isn’t a university lab demo. It’s a fabrication milestone produced on infrastructure that connects directly to the commercial semiconductor supply chain.
Is this the first quantum chip made with High-NA EUV?
Imec claims it is, with the caveat that the press release uses the phrase “to the best of our knowledge” rather than an unqualified world first. No other organization has publicly announced a comparable device fabricated with High-NA EUV lithography. The claim is credible given imec’s unique access to this tooling, but the hedged language reflects appropriate scientific caution rather than false modesty.
When could High-NA EUV quantum computing reach commercial scale?
The source announcement does not provide a commercial timeline, yield data, or a production roadmap. What imec has demonstrated is a functioning device at the research level. The path from this milestone to a commercially manufacturable quantum processor involves solving coherence, error correction, and integration challenges that remain open problems across the entire field.
Imec’s breakthrough with High-NA EUV quantum computing fabrication is real, but the honest read is that it moves the goalposts rather than ending the game. The world now knows that the most advanced lithography tools can produce working qubit devices — that’s a genuinely new fact. What comes next depends on whether the semiconductor industry treats quantum fabrication as a priority worth investing in at scale, and whether silicon-based qubits can deliver the coherence and error rates that practical quantum computing demands. The manufacturing path just got clearer. The physics challenges haven’t gone anywhere.
Edited by the All Things Geek team.
Source: Tom's Hardware
