Diraq Scales Silicon Qubit Array to Eight Qubits at imec Foundry

What's happening

Diraq, a silicon quantum computing company, has announced the successful operation of an eight-qubit silicon spin-qubit array produced at imec's 300 mm CMOS fabrication facility. The result, published in Nature Communications, represents a fourfold increase in qubit count from the company's previous two-qubit devices, with Diraq reporting that coherence and device performance were maintained through the scale-up. The fabrication was conducted using standard CMOS process technology — the same class of manufacturing used to produce conventional silicon chips — rather than specialized or exotic quantum fabrication methods.

The significance of the imec collaboration lies in the manufacturing approach: by demonstrating that silicon spin qubits can be produced on a 300 mm wafer line using industry-standard processes, Diraq is positioning its technology as compatible with existing semiconductor foundry infrastructure. Imec, headquartered in Belgium, operates as one of the world's leading independent semiconductor research and fabrication centers and has established relationships with major foundry partners globally. Diraq's stated roadmap targets scaling to hundreds of qubits, with this eight-qubit demonstration serving as a documented milestone along that trajectory.

Why it matters for markets

The foundry-compatibility of Diraq's approach carries direct implications for the semiconductor manufacturing sector. Unlike superconducting qubit platforms that require highly specialized fabrication environments, silicon spin qubits built on standard CMOS processes can, in principle, be produced at existing wafer fabs with relatively limited process modifications. This lowers the barrier to entry for established foundries seeking to participate in quantum hardware production and could accelerate commercialization timelines by bypassing the need to construct dedicated quantum fabrication facilities.

GlobalFoundries, which reported revenue of $6.84 billion and carries a market capitalization of approximately $37.30 billion, has built its business model around differentiated and specialty CMOS processes — including RF, power management, and mature nodes — rather than leading-edge logic. This positioning is directly relevant to the silicon spin-qubit opportunity: the fabrication nodes and process families that Diraq's approach relies upon overlap with the specialty CMOS segment where GlobalFoundries maintains design-win momentum. If CMOS-compatible quantum devices advance toward volume production, foundries with established specialty process portfolios would represent a natural manufacturing base.

The publication of these results in Nature Communications, a peer-reviewed journal, provides an independent technical validation of Diraq's claims that goes beyond press releases or investor materials. For the broader quantum computing sector, a peer-reviewed eight-qubit demonstration on a 300 mm line sets a documented benchmark against which competing silicon qubit programs — and alternative qubit modalities — will be measured as the industry tracks progress toward fault-tolerant quantum processors.

Sectors and assets to watch

GlobalFoundries (GFS) is the most directly relevant publicly traded foundry to monitor in the context of this development. The company's focus on specialty and differentiated CMOS processes, combined with its 14,000-person workforce and established wafer fabrication infrastructure, positions it as a potential manufacturing partner for silicon spin-qubit programs as they advance from research-scale demonstrations toward higher-volume production. GFS trades within a 52-week range of $31.51 to $92.55, reflecting the broader volatility in the semiconductor sector, and its $6.84 billion revenue base is derived primarily from automotive, industrial, IoT, and communications markets — segments that could eventually intersect with quantum-classical hybrid computing applications.

Beyond GlobalFoundries, the imec ecosystem itself connects to a wide range of semiconductor equipment and materials companies, as imec's 300 mm process development work typically involves tooling and process chemistry from major equipment vendors. Academic and government-backed quantum programs in Europe and the United States that have focused on silicon spin qubits — including programs at institutions with existing imec relationships — may also see increased attention as the Diraq result raises the credibility of the CMOS-compatible qubit pathway relative to competing approaches.

What to watch next

Key developments to monitor include Diraq's next announced qubit-count milestone on its stated roadmap toward hundreds of qubits, any formal foundry partnership agreements that move beyond the current imec research collaboration toward commercial wafer supply arrangements, and whether GlobalFoundries or other specialty CMOS foundries make public disclosures regarding quantum-related process development or customer engagements. The reception of the Nature Communications publication within the academic quantum computing community — including independent replication attempts and citation by competing research groups — will also serve as an indicator of how broadly the silicon spin-qubit approach is being validated across the field.