QuantWare, a Delft-based maker of superconducting quantum processors, said on May 5, 2026 that it had raised €152m (about $178m) in a Series B round.
Intel Capital, In-Q-Tel (IQT) and ETF Partners joined as new investors. Existing backers FORWARD.one, the Invest-NL Deep Tech Fund, InnovationQuarter Capital, Ground State Ventures and Graduate Ventures also took part. No lead investor or valuation was disclosed.
The company called it the largest private round raised by a dedicated quantum processor company. IO+ reported that the round was oversubscribed and was the largest Series B for a Dutch deep tech company.
“VIO-40K will deliver 10,000-qubit processors on an open architecture that the entire ecosystem can build on”Matt Rijlaarsdam, CEO and Co-Founder, QuantWare
What QuantWare does
QuantWare was founded in 2021 by Matt Rijlaarsdam, its chief executive, and Alessandro Bruno as a spinout from QuTech, the quantum research institute at TU Delft. It sells quantum processing units (QPUs) and offers foundry and chiplet packaging services.
Its core technology, VIO, is a modular processor architecture on an open platform that can also scale qubit chiplets and designs made by other companies. The company has announced VIO-40K, an architecture for processors with 10,000 qubits, which it says is 100 times larger than today's state of the art.
QuantWare says it has more than 50 customers in 20 countries, including quantum computing companies, national technology institutes and large technology groups, and describes itself as the largest commercial supplier of QPUs by volume.
IO+ reported that the funding came shortly after the launch of VIO-40K and that QuantWare grew into the largest supplier of commercial quantum processors within five years of its founding.
What the money is for
The funding will pay for KiloFab, which QuantWare describes as the largest fab dedicated to open-architecture quantum chips. The company said the plant would increase its production capacity twentyfold. IO+ reported that KiloFab will be in Delft and will produce VIO-40K processors. No opening date was given.
The money will also go towards scaling the VIO technology. Rijlaarsdam said the promise of quantum computing could only be realised once machines can be manufactured and deployed at scale, and that KiloFab would give QuantWare the industrial capacity to meet growing demand.
Who invested
Kike Miralles of Intel Capital said QuantWare had recognised the scaling challenge early and built VIO to address it. In-Q-Tel and ETF Partners did not comment in the announcement.
Several Dutch investors returned. Robin van Boxsel, a general partner at FORWARD.one, called QuantWare "a Dutch success story with global ambitions", while Yvonne Greeuw of Invest-NL said the company was vital to the Netherlands' strategic autonomy. The company did not disclose how much it had raised before this round or its headcount.
Rui Li, an associate principal at Graduate Ventures, described QuantWare as building a category-defining company. According to IO+, Rijlaarsdam said quantum computers would help solve major challenges only if they could be manufactured at an industrial scale.
Company website: quantware.com