Dutch quantum-computing startup QuantWare has closed a €152 million ($178 million) Series B round, the largest private round ever raised by a dedicated quantum-processor company and the largest deeptech round in Dutch history. The funding will finance construction of KiloFab, a dedicated fabrication facility for open-architecture quantum processors located at the company's Delft headquarters.
What QuantWare does
Founded in July 2021 by Matthijs Rijlaarsdam (CEO) and Dr Alessandro Bruno (CTO), both former members of the QuTech research institute at TU Delft and TNO, QuantWare has shipped working quantum processors to more than 50 organizations across 20 countries. The company describes itself as the largest commercial supplier of quantum processors by volume worldwide.
QuantWare's key architectural differentiator is its VIO architecture. Most superconducting-qubit systems use 2D chip designs where signal lines run laterally across a single processor surface, consuming space exponentially as qubit counts increase. QuantWare's approach is three-dimensional: chiplet modules stack vertically, connected through ultra-high-fidelity chip-to-chip links, with signal lines running between layers rather than across them.
VIO-40K and the 10,000-qubit claim
In late April, QuantWare announced VIO-40K, a new generation of the architecture rated for processors with 10,000 qubits — roughly 100 times the current commercial state of the art. The architecture supports up to 40,000 input-output lines through the chiplet-stack approach. Reservations for VIO-40K are available now; first customer shipments are expected in 2028.
KiloFab: where the money goes
Most of the Series B capital will fund KiloFab, described as the world's first dedicated fab for Quantum Open Architecture devices and one of the largest quantum-processor production facilities anywhere. The facility, located at QuantWare's Delft headquarters, is intended to expand production capacity by roughly 20 times.
Unlike most quantum-computing companies that fabricate their own processors in vertically integrated facilities or buy from academic-scale fabs, QuantWare operates as an open-architecture commercial supplier to the wider industry. This positions the company similarly to TSMC in classical semiconductors: not the brand the customer sees, but the fabrication operation other brands depend on.
Investor configuration
The Series B was oversubscribed. New investors include Intel Capital, In-Q-Tel (the CIA-backed strategic investor), and ETF Partners. They join existing investors FORWARD.one, Invest-NL Deep Tech Fonds, InnovationQuarter Capital, Ground State Ventures, and Graduate Ventures.
Intel Capital's participation represents a strategic hedge: Intel has been pursuing