World Quantum Day, celebrated on 14 April every year, marks more than a celebration of a fundamental constant. It is a moment to reflect on how a once highly theoretical field is steadily becoming a technological reality. Across Europe, this transformation is being driven not by isolated breakthroughs, but by a coordinated ecosystem of projects working across the full quantum stack. What defines this moment is convergence. From programmable quantum simulation to superconducting quantum computing, from foundational research to industrial application, Europe’s quantum efforts are increasingly interconnected.
The field is no longer developing in silos. Instead, it is evolving as a system, where advances in one domain reinforce progress in others.
Moving Beyond Exploration
The PASQuanS2 project, pushing forward the field of Quantum Simulation, captures one side of this shift. Quantum technologies are moving beyond purely scientific exploration and becoming platforms with real-world relevance. The transition toward practical applications is no longer a distant goal, it is actively underway, supported by strong links between research, end-users, and the broader community.
At the same time, our project OpenSuperQPlus highlights the importance of collaboration in turning ambition into achievement. The team aims to build a versatile 1,000-qubit quantum computing system made in Europe, with 100-qubit demonstrators now being developed in the Netherlands, Sweden, and Germany to pave the way for cloud-based access and applications in science and industry. Meet some of the people behind the project and watch our video series.
Bridging Theory and Practice
Through close collaboration between academic and industrial partners, QSolid is working to realise a superconducting quantum computer “Made in Germany,” with a focus on reducing error rates as a key step towards scalable quantum systems—find out more in this video.
This technological progress is underpinned by investment in people. Through training and capacity-building, our project QEC4QEA ensures that Europe is not only developing quantum technologies, but also the expertise required to sustain them. Our recent article highlights how bridging theory and practice is essential to preparing the next generation of quantum experts.
A Strong Ecosystem for Quantum Innovation
Taken together, these efforts point to a broader truth: Europe’s strength in quantum lies in its ecosystem. It is the combination of diverse approaches, simulation and computing, hardware and applications, research and training, that creates resilience and accelerates progress. World Quantum Day is therefore not just a celebration of scientific heritage. It is a recognition of how far the field has come, and of the collective effort required to take it further. Europe’s quantum community is not only advancing the state of the art, but also building the foundations of a future where quantum technologies deliver real impact.
And that future is no longer theoretical. It is already taking shape.