Europe's Quantum Computers in 2026: What They Do and What It Means for Bitcoin
Photo: European Union, Sebastian Widmann / Wikimedia Commons, CC BY 4.0
Quantum computers are no longer only something you read about in American tech news. Europe now runs its own public quantum computers in Germany, France, Poland, Czechia, Spain and Italy, and since summer 2026 researchers and companies across Europe can apply to use them.
If you hold Bitcoin, a headline like "Europe switches on a new quantum computer" can sound worrying. This guide explains what these machines are, what they are actually used for, how they compare with the kind of quantum computer that could one day attack Bitcoin, and what that means for you in practice.
This is part of our Quantum Computing series. If you are new to the topic, start with Will Quantum Computers Break Bitcoin? What's Real in 2026.
What is EuroHPC, and why does it own quantum computers?
The EuroHPC Joint Undertaking (EuroHPC JU) is a joint body of the European Union and participating countries. Its original job was to buy and run Europe's big supercomputers, the machines used for weather models, medicine, materials science and AI.
Its quantum plan is "hybrid": instead of building stand-alone quantum labs, EuroHPC connects each quantum computer to an existing supercomputer. The classical supercomputer does most of the work, and the quantum computer acts as a special accelerator for parts of a problem where it might help.
According to EuroHPC, it has procured six quantum computers and co-funded two more through a project called HPCQS, all located in Europe. Two further systems are planned for the Netherlands and Luxembourg.
Europe's public quantum computers at a glance
The table below uses the figures EuroHPC publishes for each machine. "Qubits" here means physical qubits, the raw, error-prone building blocks. Different technologies are not directly comparable by qubit count alone.
| System | Location | Technology | Qubits (EuroHPC figure) | Milestone |
|---|---|---|---|---|
| PIAST-Q | Poznań, Poland | Trapped ions | 20 | Inaugurated June 2025 |
| VLQ | Ostrava, Czechia | Superconducting | 24 | Inaugurated October 2025 |
| Euro-Q-Exa | Garching near Munich, Germany | Superconducting | 54 (upgrade to 150 planned) | Inaugurated February 2026, in production since August 2026 |
| Lucy | Bruyères-le-Châtel near Paris, France | Photonic (light) | 12 | Inaugurated April 2026 |
| EuroQCS-Spain | Barcelona, Spain | Superconducting quantum annealer | 10, 15 and 25 (three system stages) | Inaugurated May 2026 |
| SOL | Bologna, Italy | Neutral atoms (simulator) | 140 | Inaugurated June 2026 |
| JADE and Ruby (HPCQS) | Jülich, Germany and Bruyères-le-Châtel, France | Neutral atoms (simulators) | 100 each | Inaugurated end of 2025 |
Five ways to build a qubit
EuroHPC deliberately bought several different technologies, because nobody knows yet which one will win. In simple terms:
- Superconducting qubits (Euro-Q-Exa, VLQ): tiny electrical circuits cooled close to absolute zero. The Leibniz Supercomputing Centre says Euro-Q-Exa is cooled to below –273 °C. This is the same family of technology Google and IBM use.
- Trapped ions (PIAST-Q): charged atoms held in place by electromagnetic fields and controlled with lasers. They are known for accuracy and long coherence times, meaning the quantum state survives for longer.
- Photons (Lucy): particles of light used as qubits. Lucy runs at room temperature and is air-cooled.
- Neutral atoms (SOL, JADE, Ruby): uncharged atoms held by focused laser beams called optical tweezers. These are mainly used as quantum simulators for physics, chemistry and optimisation.
- Quantum annealing (EuroQCS-Spain): a special-purpose approach for certain optimisation problems, not a general-purpose quantum computer.
What are these machines actually used for?
EuroHPC lists use cases such as quantum chemistry, materials science, optimisation, logistics, energy grids, weather and earth observation, and quantum machine learning. Most of this is still research and experimentation: scientists test whether a quantum step can speed up part of a calculation that normally runs on a supercomputer.
On 25 June 2026, EuroHPC opened access to its quantum computers through a "quantum pilot access" call, the same way it already gives access to its supercomputers. The first systems in that call were Euro-Q-Exa, Lucy, PIAST-Q and VLQ, with a first cut-off date of 1 August 2026 and monthly cut-offs after that. The access mode is meant for testing, code and algorithm development, and training. In other words, universities, public bodies and companies can apply, but it is not a service you log into from your phone.
Could one of them break Bitcoin?
No. Bitcoin's signatures use elliptic curve cryptography. In March 2026, Google Quantum AI published a resource estimate for breaking the 256-bit elliptic curve problem behind that kind of cryptography. Google estimated that a future superconducting quantum computer would need fewer than 500,000 physical qubits, running error-corrected circuits with roughly 1,200 to 1,450 logical qubits. A logical qubit is an error-corrected qubit built from hundreds of physical qubits.
Compare that with the table above: the largest European digital gate-based machine listed, Euro-Q-Exa, has 54 physical qubits today, with an upgrade to 150 planned. Even the 140-atom SOL simulator is a different kind of machine built for simulation, not for running Shor's algorithm. These computers are in the range of tens to low hundreds of physical qubits, while Google's estimate for an attack is hundreds of thousands of high-quality qubits working together with error correction.
That gap is the reason not to panic, but it is not a reason to ignore the topic. Google's paper called its new estimate roughly a 20-fold reduction in physical qubits compared with earlier estimates, and it urged the crypto industry to start moving to post-quantum cryptography. Google has said it is working to a 2029 timeline for its own migration. Estimates keep falling as algorithms improve, so the distance can shrink from both sides.
Why Europe cares: sovereignty, skills and security
The EU's reasons for investing are mostly strategic. The European Commission adopted a Quantum Europe Strategy in July 2025 with five focus areas: research and innovation, quantum infrastructure, strengthening the quantum ecosystem and supply chains, space and dual-use (security and defence) technologies, and skills. The Commission's quantum policy page says an EU Quantum Act is scheduled for 2026, building on the strategy and complementing EuroHPC.
The same push also covers protecting today's systems. Our earlier post Post-Quantum Cryptography in Europe: What the EU Roadmap Means for You explains the EU's timeline for moving banks, governments and critical services to quantum-safe encryption.
What this means for you as a Bitcoin beginner
- Read headlines carefully. "New quantum computer inaugurated" usually means a research machine with tens of qubits, not a code-breaking computer.
- Avoid reusing Bitcoin addresses. Google's recommendations to the crypto community include not exposing or reusing vulnerable wallet addresses. Most modern wallets create a fresh receiving address for each payment by default.
- Keep your wallet software updated. If Bitcoin adopts quantum-resistant address types in the future, you will likely move coins to them through a normal wallet update and transaction.
- Ignore "quantum-proof" sales pitches. Scammers love new buzzwords. A token or app promising to make your coins quantum-safe for a fee is a red flag.
- Follow real sources. EuroHPC, the European Commission and the research teams themselves publish their figures. Check them before you believe a social media thread.
Important disclaimer
This is not financial, investment, legal or tax advice. It is general information as of October 2026. Quantum computing research moves quickly, and qubit counts, timelines and resource estimates can change. Always check current official sources before making decisions about your crypto.
Bottom line
Europe now has a growing network of public quantum computers, from 12 to 140 physical qubits, using superconducting circuits, trapped ions, photons, neutral atoms and annealing. They are research tools connected to supercomputers and open to European researchers and companies through EuroHPC. They are nowhere near the hundreds of thousands of qubits Google estimates an attack on Bitcoin's cryptography would need, but they show how seriously Europe is taking the quantum era. For you, the practical steps stay simple: don't reuse addresses, keep your wallet updated, and be sceptical of quantum hype.
Sources
- EuroHPC JU: Our Quantum Computers
- EuroHPC JU: EuroHPC JU Opens Access to its Quantum Computers (25 June 2026)
- Leibniz Supercomputing Centre: Euro-Q-Exa, Start of Operations for the Research (19 August 2026)
- Google Research: Safeguarding cryptocurrency by disclosing quantum vulnerabilities responsibly (31 March 2026)
- European Commission: Quantum, Shaping Europe's digital future
Advice Me publishes general information only. It is not financial, investment, legal, or tax advice. Always do your own research and consult a qualified professional before making financial decisions.
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