France’s Siquance startup targets ‘European’ quantum computing

Technology News |
By Peter Clarke

Siquance SAS (Grenoble, France) is a 2022 startup that aims to develop a quantum computer using advanced microelectronics from European chip manufacturers.

The company was co-founded by CEO Maud Vinet, previously with CEA-Leti, and will be supported by France’s CEA and CNRS institutions, both of which have invested capital and will provide R&D capacities, intellectual property and technological means.

“We found out how to turn a transistor into a good quantum bit. This is the fastest way to benefit from the know-how of the semiconductor industry and its cost-effective way of controlling and fabricating millions of identical objects,” Siquance states on its website.

Siquance is a fabless chip company that aims to transform the conventional transistor into a spin-based qubit. Siquance said it intends to use existing manufacturing capacities, in particular those available in French and European wafer fabs.

The quantum attribute that Siquance will use is the spin on an electron trapped in quantum well, which is the transistor channel, Vinet told eeNews Europe. The transistor is a conventional three-terminal device but with the addition of an magnetic gate to control the spin degree and an antenna, Vinet said. Like most quantum computing Siquance technology requires operation at cryogenic temperature to achieve an adequate coherence time. “We do go down close to absolute zero; around 1K. But this is more relaxed than many other quantum systems,” Vinet said.

Founding team

Alongside CEO Vinet, the company was co-founded by Tristan Meunier (CTO, previously of CNRS and an ERC laureate) and François Perruchot (COO, previously of CEA).

“Siquance would like to quickly establish itself as a leader in the field and deploy its offer throughout the global market – an ambition that could create an added-value of several hundreds of billions of euros for concerned actors in all fields of industry,” said Vinet, in a statement.

Vinet told eeNews Europe that the company has a series of milestones in terms of building qubit arrays and that the company expects to have a prototype quantum computer in the cloud, that will accessible by clients, within three years.

Jean-Philippe Bourgoin, head of quantum programming at CEA, said: “As a long-term player in the field of quantum technology and semiconductors, CEA is proud to see how our advances in research, our technological building blocks and our collaborations with CNRS are merging to support the creation of a novel deep tech company that is of essential value in terms of industrial and strategic sovereignty.”

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