Fundraising of the Week (Week 16): European Startups Pull In ~40M Across Quantum, AI and Deeptech

European tech startups collectively raised more than €40 million in disclosed equity this week, with Finnish autonomous airships and German quantum photonics headlining a round-up dominated by deep science and applied AI. Between 13 and 17 April 2026, seven venture-backed companies crossed the line — covering quantum computing, AI-native workflow software for finance, sales and retail, drone-alternative intelligence platforms, and the first Series C for a French logistics operator applying AI to the rarefied world of fine art transport.

Week 16 reinforces a theme that has defined the early weeks of Q2: European investors are comfortable writing pre-seed and seed cheques into hard tech — quantum, photonics, autonomous systems — even as later-stage growth rounds remain concentrated and selective. The stage mix this week (three pre-seed, two seed, one Series A and one Series C) is also a useful reminder that the continent’s pipeline is being refilled at the early end.

The week’s deals, deal by deal

The biggest fully disclosed round of the week went to Kelluu, which closed a €15M Series A to scale its autonomous airship intelligence platform. Led by the NATO Innovation Fund, the round backs the Finnish deeptech company’s mission to provide persistent geospatial AI coverage where satellites and fixed-wing drones fall short — a capability attracting renewed interest from European defence, border-security and critical-infrastructure buyers.

Close behind, German quantum photonics company Pixel Photonics raised €13.5M to accelerate market entry for its superconducting nanowire single-photon detectors (SNSPDs), combining a seed round with an EIC Accelerator blended-finance ticket. As the US and China ramp up quantum spending, Pixel Photonics is positioning Europe’s detector layer — a critical bottleneck for quantum networking and optical quantum computing — as a defensible sovereign capability.

AI-native financial software continued to attract capital. Round raised a $6M seed round to scale its AI-powered finance automation platform, targeting the accounts-payable and treasury workflows still stranded in spreadsheets and legacy ERPs. Retail is getting its own version of that story: Warsaw-based Replenit picked up $2.5M to bring real-time AI decision-making to retailers, promising to replace the overnight batch jobs that still drive a lot of merchandising decisions with always-on agentic inference.

On the quantum hardware side, Peak Quantum reached a €2.2M pre-seed to build error-resilient superconducting quantum chips, backed by Cloudberry Ventures and aligned with the EU Chips Act’s SUPREME programme. The company’s pitch is familiar in quantum circles but sharpened by this week’s funding: Europe’s best shot at competitive quantum processors runs through specialist chip designers, not general-purpose semiconductor incumbents.

Sales tooling is still a prolific seed category. Berlin’s Zell raised €500K to scale its AI-powered sales management platform, focusing on AI coaching for frontline sellers — a niche increasingly crowded but with clear willingness-to-pay from mid-market B2B teams.

Rounding out the week, French AI logistics operator Convelio secured a Series C to scale its AI-powered fine art logistics business globally. The amount was not disclosed, but this is a meaningful signal: applied, vertical AI businesses with real logistics margins are still able to raise growth capital in a market that has otherwise been tough on later-stage rounds.

Sector themes: quantum, agentic AI, and vertical software

Three patterns stand out this week. Quantum is back in the weekly headlines. Between Pixel Photonics and Peak Quantum, roughly €15.7M flowed into European quantum hardware in a single week — notable because both rounds explicitly position European capability against US and Chinese scale-up. Public instruments (EIC Accelerator, EU Chips Act SUPREME) are doing what they were designed to do: crowding in private capital around strategic hardware.

Agentic and real-time AI are getting operationalised in unglamorous verticals. Round (finance), Replenit (retail), Zell (sales) and Convelio (logistics) all share the same underlying thesis: take a repetitive operational workflow, replace batch processes and human triage with always-on AI agents, and charge for the efficiency gain. None of these companies are building new foundation models; they are productising them. That is exactly what mid-market B2B customers have been asking for.

Deeptech with dual-use applications continues to attract European defence-adjacent capital. Kelluu’s round, led by the NATO Innovation Fund, is the clearest example this week — but the line between civilian infrastructure monitoring and security surveillance is, by design, thin. Expect more of this as European defence budgets work their way through into venture allocations across Q2 and Q3.

What to watch next week

Several of the articles monitored this week — including large raises from Stegra (€1.4bn recapitalisation for green steel), Helical ($10M for AI pharma research), Graftcode (€2.1M for AI-era software integration), Wamo (€10M Series A for pan-European SME banking) and Clean Food Group (£4.5M for yeast-derived oils) — are still moving through the pipeline and should appear in next week’s round-up. Combined, they point to a continuing barbell: climate and industrial deeptech at one end, applied AI infrastructure at the other, with relatively thin activity in classic consumer categories.

We will also be watching for the first flagship growth-stage AI rounds of Q2 from UK and French portfolios, where several companies are reportedly in late-stage conversations.

Week 16 summary table

For the full archive of European fundraising coverage, see blog.sesamers.com/category/fundraising.