This round is a bet that quantum’s scaling bottleneck will be solved by networking, not monolithic machines.
UK-based Nu Quantum has raised EUR 57 million (USD 60 million) in an oversubscribed Series A funding round, bringing in a syndicate that spans strategic and specialist venture capital. The investors include National Grid Partners, Gresham House Ventures, Morpheus Ventures, Amadeus Capital Partners, IQ Capital, Ahren Capital and Cambridge Enterprise Ventures.
The company described the raise as the largest ever Series A for a pure-play quantum networking business and the largest quantum Series A in the UK. For a 2018 University of Cambridge spin-out that raised USD 7 million in a pre-Series A just over two years ago, the step-up in cheque size is notable and signals a market willingness to fund infrastructure-layer quantum plays earlier in the adoption curve.
Why investors are leaning into quantum networking
Nu Quantum’s pitch is straightforward: fault-tolerant, useful quantum computing is unlikely to arrive by simply building bigger single quantum processors. Instead, it aims to interconnect multiple quantum processors into scalable distributed systems, using photonic networking to link nodes and enable entanglement across a network.
The funding is earmarked to accelerate development of what Nu Quantum positions as a scalable route to distributed quantum computing, with the stated goal of reaching fault tolerance by interconnecting processors. The company has also highlighted product and go-to-market milestones including its Entanglement Fabric roadmap, international expansion and deeper partnerships to build distributed quantum systems.
A key element of the investment case is architectural flexibility. Nu Quantum says its approach is modular and adaptable across multiple qubit modalities, which matters in a field where the “winning” hardware stack is still contested. For investors, modality-agnostic interconnects can look like a platform layer rather than a single-hardware bet.
National Grid Partners adds a strategic signal
National Grid Partners’ participation stands out because it ties quantum networking to a practical systems constraint: energy-efficient scaling.
As data centres have shown, performance gains increasingly depend on how systems are connected, cooled and powered, not just on raw compute. National Grid Partners, the venture arm of UK electricity network operator National Grid, is effectively signalling that the future quantum stack may face similar infrastructure realities. Photonic networking and distributed architectures are being positioned as a way to scale without simply compounding power and operational complexity.
That strategic angle also widens the addressable application set beyond “pure” quantum computing, because networking and interconnectivity can matter in hybrid systems and other advanced computing architectures. Nu Quantum has pointed to broader applicability through hybrid interconnectivity, reflecting a push to be relevant even as quantum timelines remain uncertain.
What this says about the UK quantum funding market
The oversubscription and the claim of a record UK quantum Series A underline a clear trend: capital is moving from exploratory quantum science to enabling technologies that could make deployments practical.
Rather than backing yet another hardware modality, this syndicate is backing the plumbing that could allow different quantum processors to work together. That is consistent with how other compute waves have matured: interconnects, standards and systems engineering often become the critical path once early performance milestones are reached.
Execution risks remain, even with a record round
The financing provides runway, but it does not remove the core execution challenge: building reliable entanglement and networked performance at scale, across heterogeneous hardware, while proving that distributed architectures can hit the error-correction thresholds required for fault tolerance.
Commercial risk is also real. Quantum networking sits upstream of broad enterprise adoption, so customer pull can lag technical progress. Nu Quantum will need credible partnerships and repeatable deployment pathways to avoid being trapped in a long cycle of pilot projects.
Still, the composition of the round, with both strategic and deep-tech investors, suggests Nu Quantum will be pushed to translate technical milestones into ecosystem adoption. In a market increasingly focused on scalable routes to fault-tolerant systems, this raise positions the company as one of the UK’s best-capitalised plays on quantum interconnects.
Source: tech.eu (10 Dec 2025).