Quantum computing is moving beyond the laboratory as a promising technology and becoming a tangible reality, with advances ranging from error correction to logistics applications. In recent weeks, two studies published in Nature group journals have demonstrated significant improvements in the stability of quantum processors and in solving complex problems, while in Spain, industrial projects are taking shape and a booming business ecosystem is flourishing.
At the same time, major technology companies like HPE and Telefónica are forging alliances to integrate quantum computing with artificial intelligence and supercomputing, aiming to solve problems that are currently insurmountable. All of this suggests that 2026 is shaping up to be a pivotal year for the maturation of this technology.
Two studies in Nature mark a turning point
The first of these, authored by Google Quantum AI and published in Nature, presents an artificial intelligence system that reuses error signals to recalibrate a quantum computer in real time , without needing to stop the computation. Until now, calibration required halting the machine, which limited long calculations. The new approach, based on reinforcement learning, achieved a 3,5-fold improvement in logical stability and an additional 20% reduction in the error rate. This advance is crucial for long-running and more complex tasks.
The second study, published in Nature Computational Science, demonstrates a quantum scaling advantage for an NP-complete problem , the one-in-three SAT. The researchers developed a space-constrained reduction algorithm (RSRA) that allows the quantum algorithms VQE, QAOA, and QAA to scale more efficiently than the best classical methods. While the advantage is modest for small sizes, it becomes exponential as the number of variables grows, opening the door to practical applications in optimization problems.
Industrial projects in Spain: Telefónica and Würth
At the national level, Telefónica and Würth Spain have developed a hybrid quantum-classical algorithm to optimize logistics packaging at the Agoncillo center (La Rioja). After processing more than 6.000 real orders, the results show a 3% reduction in box usage, a 7% reduction in transport volume, and more than a 6% reduction in cardboard consumption, in addition to a 14% improvement in packaging quality. The project, designed at Telefónica's Javier Echenique Center for Quantum Technologies in Bilbao, was carried out in collaboration with Tecnalia and the startup QCentroid.
The Catalan quantum ecosystem and European alliances
Catalonia has become a leading hub for quantum technologies. According to a report by Acció, the Catalan ecosystem comprises 52 companies generating €91,4 million in revenue and nearly 470 jobs, with 21,2% of them already exporting. Notable projects include Qilimanjaro Quantum Tech, Quside, and LuxQuanta, and the upcoming arrival of Oxford Quantum Circuits (OQC), which will establish Europe's largest quantum computing hub in Barcelona, ​​with an investment of €92 million and over 210 skilled jobs.
At the European level, HPE announced at its HPE Discover 2026 event the creation of the Quantum Scaling Alliance , an initiative that brings together quantum hardware manufacturers, QPU developers, control and calibration experts, and error correction companies. The goal is to address the challenges of scaling quantum systems up to one million qubits by combining supercomputing, AI, and quantum computing. Kirk Bresniker, HPE's chief architect, noted that the first major breakthrough in quantum computing will likely emerge from a hybrid quantum-classical system powered by AI models.
The convergence of cutting-edge research, industrial projects with measurable results, and strategic alliances is accelerating the transition of quantum computing from the laboratory to the market. Spain and Europe are positioning themselves as key players in this process, with initiatives ranging from logistical optimization to the creation of business ecosystems and global partnerships. The combination of artificial intelligence, supercomputing, and quantum computing promises to solve problems that until now seemed impossible, and the steps taken in 2026 are a clear indication that the quantum future is already underway.
