Diraq Demonstrates Scaled Foundry-Fabricated Silicon-Based Qubit Array Made at imec

Insider BriefPRESS RELEASE — Diraq today announced the publication of “Eight-Qubit Operation of a 300 mm SiMOS Foundry-Fabricated Device” in Nature Communications, marking another decisive step on the company’s roadmap toward utility-scale quantum computers based on silicon. The paper shows that quantum bits (qubits) designed and fabricated by imec using the same industry-standard process behind Diraq’s 2025 Nature breakthrough can now be coherently operated as a linear array several times larger than the original unit cell, with no loss of coherence.The result is significant because it demonstrates that:With the successful result of scaling from two qubits to eight qubits, Diraq is currently working towards devices containing hundreds of qubits. This is part of the company’s overall roadmap to scale to thousands of qubits by 2029 and more than one million by 2031.Building on a strong foundationIn September 2025, Diraq reported the manufacture of its patented silicon spin-qubit technology using imec’s 300 mm complementary metal-oxide semiconductor (CMOS) platform.These two-qubit devices performed operations that consistently exceeded 99% fidelity, a key requirement for reliable quantum error correction.Producing these devices demonstrated that Diraq’s qubits are fully compatible with standard semiconductor manufacturing — an advantage for scalability, economics, and deployment. Following the scaling patterns set by the semiconductor industry, CMOS-native quantum chips will be able to contain millions of qubits each, delivering quantum computers that are compact enough to be deployed in data centers worldwide, while leveraging existing manufacturing facilities.A new product milestoneNow, less than a year from that initial result, today’s Nature Communications paper takes the same fabrication strategy and extends it by a factor of four in array size. The qubits, arranged as four pairs, were all successfully tuned and individually addressed, with single-qubit coherence times comparable to (and at the upper end of) the state of the art for the platform. Scaling the readout architecture for this larger array didn’t require a significant increase in sensor count, wiring density, or thermal load; this type of favorable scaling ratio points toward arrays that remain highly compact as they grow.Adding qubits has historically required a new generation of hardware for other qubit modalities. This work demonstrates multiplicative scaling on the same wafer technology, achieved in under a year. Crucially, this type of scaling does not require larger machines: the physical footprint of Diraq’s utility-scale quantum computer will be no larger than the infrastructure required for this eight-qubit device.“This is what an industrial pathway to quantum computing looks like,” said Andrew Dzurak, Founder and CEO of Diraq. “Nine months ago, we showed the world that our silicon qubits could be built reliably in imec’s 300 mm CMOS line. Today, we have scaled the size of the array using exactly the same process, with no compromise in coherence. This is the cadence we need to reach utility scale, and it is the type of cadence we expect to keep.”TopicsShare Get the latest research, company news, and market intelligence every week. MENTIONED IN THE ARTICLEDiraq is a full stack quantum company which is building a quantum computer using silicon CMOS-based spin qubits.imec is an independent research and innovation center specializing in nanoelectronics and digital technologies. Headquartered in Leuven, Belgium, imec develops advanced semiconductor process technologies, integrated photonics, and quantum hardware, including quantum dot qubit devices. Its research addresses challenges in AI, healthcare, automotive, and sustainable development by making chips smaller, faster, and more energy-efficient. Imec collaborates with industry, academia, and government partners worldwide to accelerate the transition from lab innovations to real-world applications, supporting both established companies and start-ups.More in Research 2026 © Resonance Alliance Inc.

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