French quantum startup Quobly has raised €115 million ($134m) in a Series A funding round to support the development of its silicon-based quantum computers.

The company said that the round, which was led by Bpifrance, SEALSQ, and STMicroelectronics, with participation from the European Innovation Council (EIC Fund), Blast, ALIAD (Air Liquide Venture Capital), will allow it to bring its first commercial product to market.

Dubbed Alloy Pioneer, the first computer in Quobly’s Alloy product line will be accessible via the cloud to customers by the end of 2026 and available for deployment within HPC environments sometime in 2027.

The startup said its quantum systems have been designed to integrate with existing HPC and data center infrastructure, offering a compatible footprint, power supply, and utility requirements, enabling straightforward deployment.

Its approach uses FD-SOI (Fully Depleted Silicon On Insulator) technology, a process that involves placing a thin silicon sheet on top of an oxide layer to provide better power control. Quobly has demonstrated the technology on 300mm wafers, and the startup said it has already moved a number of processes to STMicroelectronics’ 300mm production environment in Crolles, France.

“This financing marks a transition from technology validation to industrial execution. Over the past two years, we have demonstrated that silicon qubits can be developed within semiconductor manufacturing processes and integrated into a system architecture,” said Maud Vinet, CEO and co-founder, Quobly. “With this Series A, we are accelerating the deployment of our first commercial systems and building a quantum computing platform designed to integrate into existing computing infrastructures. Our objective is to make quantum computing deployable, scalable, and usable within real industrial environments.”

Founded in 2022 as Siquance, in May 2025, Grenoble-based Quobly secured €21 million ($24m) in funding to support the production of its silicon quantum chip with 100 physical qubits, dubbed the Q100T project. That funding package included a €15m ($17m) grant from Bpifrance as part of the France 2030 program and €6m ($6.8m) in Quobly’s shareholder equity.