Quobly raises €115M Series A to scale silicon quantum chips
What's the deal? QuoblyDealroom has a profile for this one. Try Dealroom → has closed a €115M Series A to industrialise its silicon-based quantum processors and bring its first commercial systems to market by the end of 2026. The round is led by state-backed Bpifrance, SEALSQDealroom has a profile for this one. Try Dealroom → (NASDAQ: LAES) and STMicroelectronicsDealroom has a profile for this one. Try Dealroom →, with participation from the European Innovation Council (EIC Fund), Blast, ALIADDealroom has a profile for this one. Try Dealroom → (Air Liquide Venture Capital) and existing investor InnovacomDealroom has a profile for this one. Try Dealroom →. Existing shareholders include the CEA, CNRS, Quantonation and Supernova Invest.
For SEALSQ, the investment builds on a technical partnership with Quobly initiated in 2025, combining Quobly's silicon-based quantum processors with SEALSQ's post-quantum security technologies. SEALSQ CEO Carlos MoreiraDealroom has a profile for this one. Try Dealroom → will take a board seat at Quobly as part of the deal.
Why now? The Series A follows Quobly's €19M seed phase (2023–2025), in which the company demonstrated that silicon qubits can be built within standard semiconductor manufacturing processes. The new capital funds continued R&D, industrialisation and international commercial expansion, with Quobly's first Alloy-line quantum computer set to be accessible through the cloud by the end of 2026.
Europe is pushing hard to develop sovereign quantum computing capabilities, and Quobly's silicon-based approach — built on FD-SOI technology and 300mm wafers — could give the continent a homegrown alternative to US and Chinese quantum efforts.
What could go wrong? Quantum computing remains deeply pre-commercial. Silicon-based quantum processors are one of several competing architectures, and none has yet proven it can scale to practical, fault-tolerant systems. Quobly's path from lab to commercial product is long and uncertain.
The signal: Quobly's €115M Series A — co-led by corporate investors SEALSQ and STMicroelectronics alongside state-backed Bpifrance — illustrates Europe's strategy of blending public and private capital to build sovereign deep-tech capacity. Dealroom classifies Quobly as a "breakout" stage company, an unusual designation for a Series A, suggesting its semiconductor industry ties and government backing give it a head start over earlier-stage quantum peers. The investor mix itself is the tell: when chipmakers and state funds co-lead, the bet is as much on industrial policy as it is on the technology.
Read more: Quobly · The Quantum Insider
