Quantum Computing in the EuroHPC JU Ecosystem, A Practical Guide for European SMEs

This white paper provides European small and medium enterprises (SMEs) with a practical introduction to quantum computing opportunities through the EuroHPC Joint Undertaking (EuroHPC JU) ecosystem. Written for business executives, including CEOs, CTOs, and startup founders, the document explains how quantum computing works, where the technology stands today, and how European businesses can begin exploring its potential. The paper covers the ten EuroHPC JU quantum computers deployed across eight European countries, representing six different qubit technologies: superconducting, neutral atom, photonic, trapped ion, quantum annealing, and semiconductor spin qubits. These quantum systems are integrated with powerful classical supercomputers, enabling hybrid workflows that combine classical and quantum computing strengths. Key topics include: the current state of quantum hardware (the NISQ era), criteria for evaluating quantum use cases, business applications across seven industry sectors (pharmaceuticals, chemicals, energy, telecommunications, manufacturing, logistics, and finance), and the role of National Competence Centres (NCCs) and the European Quantum Excellence Centre (QEX) in supporting SME engagement. The document provides a step by step pathway for SMEs to build quantum readiness, from foundational training through pilot projects, without requiring major upfront investment. It serves as a 2025 reference for European businesses seeking to understand and access the growing European quantum computing infrastructure.