Europe has taken another step in the global race for advanced computing with the launch of a new photonic quantum computer near Paris.

The system, named Lucy, reflects a broader strategy to strengthen technological sovereignty while accelerating research across science and industry.

The machine has been deployed under the EuroHPC Joint Undertaking (EuroHPC JU), a pan-European effort to build cutting-edge supercomputing and quantum infrastructure.

Its arrival signals both technical progress and political intent: Europe wants to compete at the highest level in next-generation computing.

A strategic launch at France’s leading supercomputing hub

The inauguration ceremony took place at the Très Grand Centre de Calcul (TGCC) in Bruyères-le-Châtel, one of France’s primary high-performance computing (HPC) centres. The event was hosted by CEA in collaboration with GENCI.

Senior policymakers and European officials attended, underlining the project’s significance. Among them were Anne Le Hénanff, Kilian Gross, and Anders Jensen.

Their presence reflects how quantum computing has moved beyond research labs into the realm of strategic infrastructure.

EuroHPC JU’s Executive Director Anders Jensen highlighted Lucy’s transformative potential: “Lucy is the fourth EuroHPC quantum computer to be inaugurated.

“It brings new quantum capabilities to Europe’s supercomputing ecosystem and marks another important milestone for our technological sovereignty.

“By bringing together quantum and high-performance computing, EuroHPC JU is enabling researchers and industry to tackle complex challenges and unlock new opportunities for innovation across strategic sectors.”

What makes Lucy different

At the core of Lucy is a photonic quantum computer developed by Quandela. Known as MOSAIQ-12, the system can operate with up to 12 physical qubits using photons – particles of light – as the basis for computation.

Unlike many quantum platforms that require ultra-cold temperatures, photonic systems operate at room temperature. This removes a major engineering barrier and allows easier integration with classical supercomputers.

Lucy will be connected to the Joliot-Curie system, enabling hybrid workflows that combine quantum and classical processing.

The architecture is based on linear optics quantum computing (LOQC), a model widely seen as promising for scalability. Because the system is modular and fibre-based, it can be deployed in standard data centre environments rather than highly specialised facilities.

From theory to real-world applications

The introduction of a photonic quantum computer into a production supercomputing environment is designed to unlock practical use cases.

Researchers and industrial users will be able to experiment with hybrid quantum-classical algorithms in areas such as:

• Advanced materials discovery
• Climate and weather modelling
• Energy optimisation
• Complex engineering simulations

By combining HPC with quantum acceleration, Lucy aims to reduce computation times for problems that are currently intractable using classical methods alone.

The system is currently undergoing final calibration and is expected to become available to European users in the near term.

A collaborative European effort

Lucy is not a standalone initiative. It forms part of a broader network of quantum systems funded and coordinated by EuroHPC JU.

The project is supported by a consortium led by GENCI, with participation from institutions including the University Politehnica of Bucharest, Forschungszentrum Jülich, and Irish Centre for High-End Computing.

The system itself was delivered through a French-German partnership involving Quandela and attocube systems AG.

With a total cost of €8.5m, the investment is jointly funded by EuroHPC JU and the French government.

Michaël Krajecki, CEO of GENCI, added: “With Lucy, the EuroHPC JU, the CEA, and GENCI are providing European and French scientific and industrial communities with a unique, hybrid, and sovereign quantum computing capability.

“Freely accessible, Lucy is becoming a cutting-edge sovereign asset for research and innovation. Thanks to Quandela’s photonic technology, hosted at the TGCC, the transition to the industrial scale of the quantum era has never seemed so close. This marks a major milestone for France and for Europe.”

Europe’s expanding quantum ecosystem

Lucy is one of several quantum systems being rolled out across Europe. Recent deployments include machines in Poland, the Czech Republic, and Germany, each based on different quantum technologies such as trapped ions, superconducting circuits, and neutral atoms.

This diversification is deliberate. Rather than betting on a single approach, Europe is building a portfolio of quantum platforms to explore complementary strengths and applications.

In parallel, analogue quantum simulators like Jade and Ruby have already been installed, while additional systems are planned in the Netherlands and Luxembourg.

Positioning Europe in the quantum computing race

The launch of Lucy underscores Europe’s ambition to lead in quantum computing – not just scientifically, but industrially.

By embedding a photonic quantum computer into an operational HPC environment, the region is moving closer to real-world deployment.

The broader objective is clear: provide researchers and companies with access to cutting-edge tools while reducing reliance on non-European technologies.

If successful, initiatives like Lucy could help define Europe’s role in the next era of computing – one where photons, rather than electrons, may power some of the world’s most advanced calculations.