French quantum computing startup Alice & Bob has announced plans to construct a $50 million quantum computing laboratory in Paris, France.

According to the company, the 4,000 sqm (43,055 sq ft) purpose-built facility has been funded by the €100m ($104m) Series B funding round raised by the company at the start of 2025.

Alice & Bob will partner with Quantum Machines and cryogenic systems manufacturer Bluefors for the facility. The site will be used to oversee the development of Alice & Bob’s next-generation quantum chip series: Lithium, Beryllium, and Graphene, and will include a nanofabrication cleanroom and a cryostat farm designed to host 20 Bluefors dilution refrigerators.

A dedicated area of the cryostat farm will also be reserved for the installation of the company’s large-scale quantum computer, Graphene, a 100-logical-qubit quantum computer planned for 2030.

“Our state-of-the-art product development lab will serve as a cornerstone of French quantum infrastructure and as a blueprint of how to build industrial-scale tech in Europe,” said Théau Peronnin, CEO of Alice & Bob. “As our company’s focus is shifting from pure research to commercialization, our lab will enable Alice & Bob to create technology that can be tested by actual clients and end users.”

Founded in 2020, Alice & Bob claims its superconducting ‘cat qubits’ are protected from bit-flip errors by design, meaning additional error-correcting qubits are only needed to tackle the remaining phase-flip errors.

The company says it is alone in developing quantum computers exclusively with this type of qubit, and that its approach makes it possible to create fault-tolerant computers using far fewer qubits.

In February 2025, Amazon unveiled its Ocelot quantum computing chip, also based on cat qubit architecture.