Grenoble, France – September 16, 2026 -- Quobly, a French quantum computing company developing industrially scalable quantum computers based on silicon spin qubits, today announces new results showing qubit readout, single-qubit gates and two-qubit gates on a single quantum chip fabricated on its proprietary QSOI® technology.

• The results were obtained on QSOI® devices fabricated in STMicroelectronics’ commercial 300 mm manufacturing facilities in Crolles (Grenoble – France), using FD-SOI CMOS technology.
• This demonstrates that key quantum operations can be performed on devices manufactured through an industrial semiconductor production process, providing an initial validation of the technology path toward repeatable and scalable quantum processor manufacturing.

From technology transfer to industrial-scale manufacturing

Quobly has demonstrated key quantum operations on QSOI® devices fabricated in STMicroelectronics’ commercial 300 mm manufacturing facilities in Crolles, using FD-SOI CMOS technology. QSOI® is built on the FD-SOI semiconductor platform and combines silicon spin qubits with FD-SOI transistors for co-integrated control electronics. It was developed from the outset with industrial manufacturing and large-scale integration in mind, including the use of enriched silicon-28.

Quobly is partnering with STMicroelectronics to transfer its proprietary designs and process flows into an industrial semiconductor manufacturing environment, while developing the cryogenic control, readout and integration technologies required for increasingly large quantum processors.

The results provide an initial validation of this technology transfer: key quantum operations can be demonstrated on devices produced through an industrial semiconductor manufacturing process.

The ability to reproduce this sequence of technological steps reliably across the manufacturing process is critical to ultimately manufacturing quantum processors with millions of qubits.

Using an established semiconductor manufacturing platform is central to Quobly’s industrialization strategy: it is designed to support repeatable fabrication of quantum devices, controlled manufacturing costs and the production of increasingly large numbers of processors as the technology scales.

Three key quantum operations demonstrated on QSOI®

The latest experiments demonstrate one- and two-qubit gates, together with qubit readout – the three basic operations required to operate a silicon spin-qubit quantum computer.

All three operations were demonstrated on a single QSOI® quantum chip, bringing the core functions needed to control and read out silicon spin qubits together on the same device.

Tristan Meunier, Chief Scientific Officer and co-founder of Quobly, said: “Having these three basic operations demonstrated on a single QSOI® chip is an important step. They were achieved on devices manufactured through the 300 mm semiconductor process we are developing with STMicroelectronics. This validates key elements of the technology transfer and gives us a solid basis for further integration and scaling.”

Quobly has also demonstrated co-integration of quantum and cryogenic circuits on the same chip and developed a cryogenic process design kit (PDK) to support further integration.