QuantWare
Netherlands, NL · Founded 2020 · 104 employees on LinkedIn · 12 known investors
QuantWare designs and manufactures quantum processors (QPUs) for industrial applications. The company is building KiloFab, a production facility to scale quantum processor manufacturing.
Also known as QuantWare BV
Founders & leadership
QuantWare was founded in 2020 by Matt Rijlaarsdam.
Investors · 12
Also in the syndicate · 5
Funding
SEC filings, press & company announcements$178M disclosed across 1 of 4 rounds · 2023–2026
- $178MSeries BMay 2026 · 3 sources
ETF Partners, FORWARD.one, Graduate Ventures, Ground State Ventures, In-Q-Tel (IQT), InnovationQuarter Capital, Intel Capital, Invest-NL Deep Tech Fund, IQT
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026QuantWare is a Delft, Netherlands-based company that designs, fabricates and integrates superconducting quantum processing units (QPUs). It was founded in 2021 by Matt Rijlaarsdam and Alessandro Bruno as a spinout from the QuTech institute at TU Delft. The company's product line spans QPUs (A-Line, Master QEC and D-Line processors), peripheral components for readout chains, foundry services and chiplet packaging services, all built around its VIO modular quantum processor architecture.
VIO uses vertical input/output interconnects and 3D chiplet integration to address routing, packaging and manufacturability limits that constrain monolithic superconducting chips. The announced VIO-40K architecture is designed to support up to 10,000 qubits — described by the company as 100x the current commercial state of the art — by connecting stacked chiplets through up to 40,000 vertical I/O lines. Because the architecture is positioned as open, third-party qubit chiplets and designs can be integrated onto QuantWare's backplane, which the company markets as the Quantum Open Architecture. The company is building KiloFab, which it describes as the world's largest dedicated quantum open-architecture fab, in the Netherlands, intended to raise production capacity by 20x.
Earlier products traced a steadily increasing qubit count: Soprano, a 5-qubit processor launched in 2021 and described as the first commercially available superconducting QPU; Contralto, a 25-qubit QPU unveiled in March 2022 with customizable topologies and features; Tenor, a 64-qubit chip using a 3D wiring approach; and Contralto-A, a 17-qubit device optimized for quantum error-correction experiments including distance-3 surface code work.
Founding story
The company was founded in 2021 by Matt Rijlaarsdam and Alessandro Bruno as a spinout from the QuTech institute at TU Delft. Rijlaarsdam had been a researcher in quantum information science at QuTech, and Bruno served as Head of Fabrication in the Leo DiCarlo Group there.
Business model
QuantWare sells quantum processors and readout peripherals as off-the-shelf hardware components and additionally offers foundry services for fabricating third-party qubit designs and packaging services for chiplets, positioning itself as a supplier within a horizontally integrated quantum computing supply chain rather than a full-stack quantum computer vendor.
Revenue derives from sales of QPUs and peripheral hardware to customers who assemble their own quantum systems, plus foundry and chiplet packaging services provided to other organizations.
Traction
More than 50 customers across 20 countries; described as the world's largest commercial QPU supplier by volume; processors powered the first quantum computers in more than five major economies, including Israel's first quantum computer and Spain's first quantum computer at the Barcelona Supercomputing Center.
Latest developments
In May 2026 QuantWare announced a $178 million (€152 million) Series B round with new investors Intel Capital, In-Q-Tel and ETF Partners, following the announcement of the VIO-40K architecture and the start of construction of the KiloFab facility. The company also announced a partnership with Maybell on compute-per-watt performance for VIO-40K systems and won a 2026 Gold Edison Award.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
QuantWare describes itself as the world's largest commercial QPU supplier by volume, stating it has shipped more quantum processors than any other commercial supplier, with more than 50 customers across 20 countries and processors powering the first quantum computers in more than five major economies. Its component-supplier strategy is distinct from full-stack developers such as IBM and Google.
QuantWare positions itself as the only company designing, fabricating and integrating modular quantum processors on an open architecture at industrial scale, contrasting its chiplet-based modular approach with monolithic chip designs whose yields decline as they grow, and offering third parties the ability to scale their own qubit designs on its backplane.
Technology
The core technology is the VIO architecture, a modular QPU design using chiplets and vertical interconnects to route control and readout signals from above the chip, enabling multiple modules to be combined into larger processors. VIO-40K targets 10,000-qubit processors via up to 40,000 vertical I/O lines linking stacked chiplets, and the company emphasizes compute-per-watt performance. Product families include A-Line, Master QEC and D-Line processors, alongside cryogenic readout peripherals.
Go-to-market
The company sells standardized, off-the-shelf processors with short lead times (chips delivered in weeks; Contralto was offered within 30 days of order), supported by foundry and packaging services, an open-architecture model that allows partners to integrate their own designs, participation in industry conferences such as APS Global Physics Summit and Q2B, and partnerships with other quantum ecosystem vendors.
Quantum computing companies, national technology institutes and national quantum programs, national labs, research institutions, and major global technology conglomerates.
Geography
Headquartered in Delft, the Netherlands (Molengraaffsingel 8, 2629 JD Delft), with customers in 20 countries and the KiloFab production facility planned in the Netherlands.
History
Founded in 2021 as a spinout from QuTech at TU Delft, QuantWare launched the 5-qubit Soprano processor in mid-2021, followed by the 25-qubit Contralto in March 2022, during which year it tripled its staff and shipped to customers on four continents. In 2023 its processors were selected for Israel's first quantum computer (with Quantum Machines) and formed the core of Spain's first quantum computer built by Qilimanjaro and integrated at the Barcelona Supercomputing Center; the company closed a €6 million seed round in early 2023 and launched foundry services and a cryogenic amplifier. In 2024 it introduced the 17-qubit, QEC-optimized Contralto-A to select partners. In 2025 it raised a $27 million Series A and announced the VIO-40K architecture, followed in May 2026 by a $178 million Series B to fund VIO and the KiloFab facility.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Competitors · 4
by search overlap
Companies competing with QuantWare for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 13
launches, deals, and filingsQuantWare is building KiloFab in the Netherlands, described as the world's largest dedicated quantum open architecture fab, increasing production capacity by 20x.
QuantWare announced a $178 million (€152 million) Series B equity round, described as the largest private round raised by a dedicated quantum processor company, to fund VIO technology and the KiloFab facility. New investors included Intel Capital, In-Q-Tel and ETF Partners; existing investors FORWARD.one, Invest-NL Deep Tech Fund, InnovationQuarter Capital, Ground State Ventures and Graduate Ventures participated. The round was oversubscribed.
$178M source ↗
QuantWare and Maybell partnered to maximize compute-per-watt performance of VIO-40K systems.
Elevate Quantum and partners launched the United States' first Quantum Open Architecture system.
Announcement of VIO-40K, a modular quantum processor architecture designed to support 10,000 qubits, described as 100x larger than the state of the art.
Contralto-A, a 17-qubit processor designed for quantum error correction with flux-tunable couplers and individual Purcell filters, enabling distance-3 surface code experiments on a single device.
QuantWare was selected to supply QPUs for Israel's first quantum computer, in collaboration with Quantum Machines.
QuantWare's Soprano chip became the core of Spain's first quantum computer, built by Qilimanjaro and integrated into the Barcelona Supercomputing Center.
QuantWare launched a foundry service for fabricating custom superconducting designs and a cryogenic amplifier product.
Development of Tenor, a 64-qubit chip introducing a 3D wiring approach bringing control lines vertically from above the chip so multiple modules can be combined.
QuantWare unveiled the 25-qubit Contralto processor, customizable with features such as Purcell filters and asymmetric SQUID junctions, and available within 30 days of order.
QuantWare launched Soprano, described as the world's first commercially available superconducting QPU, with single-qubit fidelities reported around 99.9%.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
MagiQware Raises €575K Pre-Seed Round to Advance AI Software For Quantum Computingthequantuminsider.com · Jul 2026▸Research sources · 8
primary sources listed
- QuantWarequantware.com · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does QuantWare do?
- Dutch quantum processor company selling superconducting QPUs, foundry and packaging services built on its modular VIO architecture.
- Who founded QuantWare?
- QuantWare was founded by Matt Rijlaarsdam in 2020.
- Who are QuantWare's investors?
- QuantWare's investors include Graduate Entrepreneur, In-Q-Tel, QDNL Participations, Rotrip, ETF Partners, FORWARD.one, Intel Capital.
- How much funding has QuantWare raised?
- QuantWare has disclosed $178M raised across 1 of its 4 known rounds.
- Where is QuantWare headquartered?
- QuantWare is headquartered in Netherlands, NL.