Spain

aQuantum is a Madrid-based research, development, consulting and services firm specializing in quantum software engineering and programming. The company provides quantum algorithm development, quantum software consulting, and training services to enterprises and research institutions. aQuantum helps organizations understand and implement quantum computing solutions for their specific business needs.

2025 Developments: The company continues to enhance its quantum software platform and developer tools in 2025. Focus remains on improving algorithm efficiency and expanding use case applications. Active engagement with the quantum developer community drives product evolution.

Banco de Santander is a Spanish multinational financial services company founded in 1857 and headquartered in Madrid, Spain, with Quantum Division focusing on quantum-safe financial services and quantum cryptography implementations. Santander participates in Spain’s QKD-GEO quantum key distribution geostationary satellite mission analyzing real use cases with Hispasat, BBVA, Telefónica, and Cellnex for quantum-secure banking communications. The bank invests in quantum-safe security technologies preparing financial infrastructure for post-quantum cryptography era and quantum computing threats to current encryption protecting financial transactions and customer data. Santander explores quantum key distribution for ultra-secure banking communications, post-quantum cryptography for protecting financial data, and quantum-safe blockchain implementations for digital banking services. The company collaborates with quantum security providers implementing NIST-approved PQC algorithms across banking infrastructure. Banco de Santander serves global banking markets requiring quantum-safe financial services, secure payment systems, and quantum-resistant cryptography protecting customer transactions, financial data, and banking communications against quantum computing threats.

Banco Bilbao Vizcaya Argentaria (BBVA) is a Spanish multinational financial services company founded in 1857 (origins) and headquartered in Madrid, Spain, with Quantum Division developing quantum-safe banking technologies and post-quantum cryptography implementations. BBVA participates in Spain’s QKD-GEO quantum key distribution geostationary satellite mission analyzing real use cases with Hispasat, Banco de Santander, Telefónica, and Cellnex for quantum-secure financial communications. The bank invests in quantum computing research, quantum-safe security technologies, and post-quantum cryptography preparing financial infrastructure for quantum computing threats to current encryption standards. BBVA explores quantum key distribution for ultra-secure interbank communications, post-quantum cryptography algorithms for protecting financial transactions, and quantum-safe blockchain for digital banking services. The company collaborates with quantum security providers implementing quantum-resistant cryptography across banking systems. BBVA serves global financial markets requiring quantum-safe banking infrastructure, secure payment systems, and quantum-resistant encryption protecting customer data, financial transactions, and banking communications against emerging quantum computing capabilities threatening current cryptographic systems.

Cellnex Telecom is a Spanish telecommunications infrastructure and services company founded in 2015 and headquartered in Barcelona, Spain, with Quantum Division supporting quantum-safe satellite communications development and quantum networking infrastructure. Cellnex participates in Spain’s QKD-GEO quantum key distribution geostationary satellite mission led by Thales Alenia Space and Hispasat, analyzing real use cases with banking sector and terrestrial operators for quantum-secure communications. The company collaborates with Hispasat, Banco de Santander, BBVA, and Telefónica defining business plans for quantum-safe satellite and terrestrial network integration. Cellnex operates telecommunications tower infrastructure across Europe providing potential backbone for quantum-safe communications networks. The company invests in next-generation secure communications technologies including quantum key distribution and post-quantum cryptography preparing infrastructure for quantum computing threats. Cellnex serves telecommunications operators, mobile network operators, broadcasters, and infrastructure sectors requiring quantum-safe communications capabilities and tower infrastructure supporting quantum networking deployments across European markets.

Cryptosasun is a Spanish quantum security startup developing post-quantum cryptography solutions and quantum-safe security protocols. The company focuses on protecting digital infrastructure from quantum computing threats through advanced encryption technologies. Cryptosasun provides quantum-resistant security solutions for enterprises and government agencies in Spain and across Europe.

2025 Developments: Development of quantum-safe cryptography solutions remains a priority in 2025. Focus on post-quantum cryptography standards and implementation. Active participation in industry standards bodies and security consortiums.

ERZIA is an OEM manufacturer of high-performance RF and microwave modules, subsystems, and integrated assemblies serving quantum computing applications. Their high-power amplifiers (HPA) drive microwave control pulses for qubit manipulation (4-8 GHz, 10-50W output), while their low-noise amplifiers (LNA) capture weak readout signals with sub-1 dB noise figures across L-Band through W-Band frequencies critical for quantum system architectures. ERZIA provides essential RF infrastructure for quantum control systems worldwide.

2025 Developments: The company continues to advance its quantum hardware capabilities throughout 2025. Ongoing research and development efforts focus on improving qubit performance and scalability. The organization maintains active collaboration with research institutions and industry partners.

Hispasat is Redeia’s satellite services operator founded in 1989 and headquartered in Madrid, Spain, operating satellites providing telecommunications services across Europe, Americas, and North Africa. In January 2025, Hispasat partnered with Thales Alenia Space to start development, manufacturing, verification, and validation phase of the QKD-GEO prototype, Spain’s quantum key distribution system from geostationary orbit. The QKD-GEO mission has a budget of 103.5 million euros and 24-month timeline to develop components for quantum key distribution from geostationary orbit, including quantum payload for geostationary satellite and associated ground segment. Hispasat is responsible for designing the geostationary mission and defining the business plan, with support from Banco de Santander, BBVA, Telefónica, and Cellnex analyzing real use cases with banking sector and terrestrial operators. A field test campaign is planned between Spanish islands of La Palma and Tenerife covering 140-km atmospheric link. Hispasat serves telecommunications operators, government agencies, financial institutions, and critical infrastructure requiring quantum-secure satellite communications.

Inspiration-Q is a Madrid-based company that emphasizes the transformative potential of quantum computing while addressing the current challenges of nascent hardware. The company develops quantum software applications and provides quantum computing education and consulting services. Inspiration-Q works to bridge the gap between quantum research and practical business applications in Spain.

2025 Developments: The company continues to enhance its quantum software platform and developer tools in 2025. Focus remains on improving algorithm efficiency and expanding use case applications. Active engagement with the quantum developer community drives product evolution.

Institute of Astrophysics of the Canary Islands (IAC) is a Spanish astrophysics research center founded in 1982 and headquartered in La Laguna, Tenerife, Spain, with Quantum Division participating in Spain’s QKD-GEO quantum key distribution geostationary satellite mission. IAC participates in the large industrial consortium led by Thales Alenia Space developing quantum communications technology for space-based quantum key distribution. The institute brings astrophysics expertise and Canary Islands astronomical facilities to quantum communications research and testing. A field test campaign is planned between Spanish islands of La Palma and Tenerife covering 140-km atmospheric link, validating ground segment and quantum payload functionality under representative conditions before implementing operational mission in orbit. IAC collaborates with Polytechnic University of Madrid, University of Vigo, Thales Alenia Space, and Hispasat advancing quantum communications from space. The institute serves European Space Agency, quantum technology companies, and research institutions requiring space-based quantum communications research, atmospheric quantum transmission testing, and ground station development for satellite QKD systems.

LuxQuanta is a Barcelona-based quantum security startup founded in May 2021 as a spin-off from ICFO (The Institute of Photonic Sciences), specializing in quantum key distribution (QKD) systems. The company develops continuous variable QKD (CV-QKD) technology that provides ultra-secure data encryption and is easier to integrate into existing optical network infrastructures. In March 2023, LuxQuanta launched NOVA LQ™, a high-performing CV-QKD solution for intra-city networks. CEO Vanesa Diaz joined as business development manager in 2021 and became CEO a year later. LuxQuanta won the €50,000 equity-free first prize at the Supernova All-Stars Competition held during GITEX Europe 2025, establishing itself among Spain’s top quantum computing companies.

Multiverse Computing is a leading quantum software company specializing in quantum applications for the financial services industry, offering quantum solutions that provide competitive advantages in portfolio optimization, risk management, and derivative pricing. Founded in 2019 by Enrique Lizaso and Alfonso Rubio-Manzanares, the company has developed Singularity, a comprehensive quantum software platform that enables financial institutions to leverage quantum computing without requiring deep quantum expertise. Multiverse’s solutions address critical financial challenges including portfolio optimization with complex constraints, Monte Carlo simulations for risk assessment, and machine learning for algorithmic trading and fraud detection. The company has established partnerships with major financial institutions, central banks, and consulting firms across Europe, North America, and Asia. Their quantum advantage demonstrations have shown significant improvements in optimization problems, with some algorithms achieving exponential speedups over classical approaches. Multiverse Computing’s focus on practical, near-term quantum applications in finance positions them at the forefront of the quantum computing revolution in financial services, helping institutions prepare for quantum advantage while navigating the transition from classical to quantum computing paradigms.

PlanetAI Space integrates Earth Observation with quantum machine learning to detect underground freshwater sources and environmental patterns from satellite data. Their Quantum Aqua technology uses hybrid quantum-classical ML to estimate underground water source probabilities, replacing traditional field measurements with large-scale processed satellite information to generate real-time water location maps and contamination warnings. Winner of World Economic Forum’s Quantum for Sustainability challenge in 2025 with funding from Ready2Scale, Madrid Emprende, Village Capital, and others.

Polytechnic University of Madrid (Universidad Politécnica de Madrid - UPM) is a Spanish public research university founded in 1971 and headquartered in Madrid, Spain, with Quantum Division participating in Spain’s QKD-GEO quantum key distribution geostationary satellite mission. UPM is part of the large industrial consortium led by Thales Alenia Space developing quantum communications technology for space-based quantum key distribution systems. The university brings telecommunications engineering and quantum communications research expertise to satellite QKD development. UPM collaborates with Institute of Astrophysics of the Canary Islands, University of Vigo, Thales Alenia Space, and Hispasat advancing quantum-safe satellite communications. The university conducts research in quantum cryptography, quantum optics, and quantum communications protocols for satellite applications. UPM serves European quantum communications research community, quantum technology companies, and government agencies requiring quantum communications research, quantum networking protocols development, and satellite QKD systems engineering. The university contributes to Spanish national quantum strategy and European Quantum Communication Infrastructure (EuroQCI) initiative.

Qilimanjaro Quantum Tech is a Barcelona Supercomputer Center spinout founded in 2019 that develops quantum computing solutions combining quantum annealing and gate-model quantum computing approaches, creating hybrid quantum-classical systems that can solve optimization problems and quantum simulations for industries including finance, logistics, and materials science, leveraging Spain’s supercomputing expertise and European quantum initiatives to advance practical quantum computing applications with focus on near-term quantum advantage in optimization and simulation problems. In September 2025, Qilimanjaro announced a strategic partnership with Qblox, a Netherlands-based quantum control hardware company, to integrate Qblox’s control electronics with Qilimanjaro’s superconducting quantum processors, enabling enhanced scalability and performance for their quantum computing systems through advanced control and readout capabilities. In October 2025, Qilimanjaro joined the IMPAQT UA cooperative consortium as the first analog quantum computing company, focused on building interoperable and scalable quantum systems through collaborative research and development with other European quantum technology organizations. In October 2025, Qilimanjaro Quantum Tech and QURECA signed a collaboration agreement for quantum education, including workshops on analog and hybrid quantum computing with hands-on access to Qilimanjaro’s platform to advance quantum computing education and workforce development.

Qilimanjaro Quantum Tech is a Barcelona Supercomputer Center spin-off and key contributor to the European Commission’s AVaQus H2020 project on coherent quantum annealing. The company develops quantum annealing technology and has established partnerships including collaboration with Technology Innovation Institute in UAE. Qilimanjaro focuses on quantum annealing applications for optimization problems in logistics, finance, and drug discovery, representing Europe’s efforts to develop competitive quantum annealing platforms.

2025 Developments: The company continues its quantum technology initiatives throughout 2025. Focus remains on advancing core technologies and expanding market presence. Ongoing development activities position the company for future growth in the quantum industry.

Quantum Mads is a hybrid Quantum Software as a Service (QSaaS) provider based in Bilbao that tackles complex industrial challenges. The company develops quantum algorithms and software tools for optimization, simulation, and machine learning applications. Quantum Mads helps Spanish businesses adopt quantum computing for practical problem-solving in manufacturing, logistics, and energy sectors.

2025 Developments: The company continues to enhance its quantum software platform and developer tools in 2025. Focus remains on improving algorithm efficiency and expanding use case applications. Active engagement with the quantum developer community drives product evolution.

QuantumPath develops quantum optimization software for telecommunications and network optimization. The company provides quantum algorithms for network routing, resource allocation, and spectrum management in telecommunications infrastructure. QuantumPath works with telecom operators to develop quantum solutions for 5G network optimization and beyond. The company’s software combines quantum optimization with classical network management tools to deliver hybrid solutions. Based in Spain, QuantumPath collaborates with European telecommunications companies and research institutions. The company focuses on practical near-term applications where quantum approaches can improve network efficiency and reduce operational costs. QuantumPath offers both cloud-based optimization services and on-premises software for telecommunications network operators.

Quanvia is based in Bilbao, Spain, focusing on implementing quantum applications and training individuals to enhance their understanding of quantum computing. The company provides quantum computing courses, workshops, and hands-on training programs for businesses and universities. Quanvia helps develop quantum computing talent in the Basque Country and broader Spanish quantum ecosystem.

2025 Developments: The company continues to enhance its quantum software platform and developer tools in 2025. Focus remains on improving algorithm efficiency and expanding use case applications. Active engagement with the quantum developer community drives product evolution.

Quside is a Spanish quantum technology company founded in 2017 that develops quantum random number generators (QRNGs) and quantum entropy sources for cybersecurity, cryptography, and secure communications applications, providing true random number generation based on quantum physical processes that ensure unpredictable and unbiased randomness essential for encryption keys, secure protocols, and high-security applications in telecommunications, finance, and government sectors requiring certified quantum-grade randomness for cryptographic security.

2025 Developments: The company continues to advance its quantum hardware capabilities throughout 2025. Ongoing research and development efforts focus on improving qubit performance and scalability. The organization maintains active collaboration with research institutions and industry partners.

Quside Technologies is a Spanish company developing quantum random number generators based on quantum optical processes for cybersecurity and scientific applications. The company manufactures QRNG devices using photonic quantum phenomena to generate random numbers at high speeds. Quside’s technology serves customers requiring certified quantum randomness for cryptographic key generation, secure communications, Monte Carlo simulations, and gaming applications where provably random numbers are essential.

2025 Developments: The company continues its quantum technology initiatives throughout 2025. Focus remains on advancing core technologies and expanding market presence. Ongoing development activities position the company for future growth in the quantum industry.

Telefónica S.A. is a Spanish multinational telecommunications company founded in 1924, headquartered in Madrid, Spain. Telefónica explores quantum technologies including quantum key distribution (QKD) for secure communications, quantum networking, and post-quantum cryptography for telecommunications infrastructure. The company collaborates with quantum technology providers and research institutions deploying quantum communication networks across Spain and Latin America. Telefónica invests in quantum-safe security preparing telecommunications infrastructure for post-quantum security transitions. The company serves telecommunications markets across Europe and Latin America including enterprise customers, government agencies, and critical infrastructure sectors requiring quantum-safe communications. Telefónica contributes to European quantum communications infrastructure development advancing quantum technology adoption in telecommunications sector and positioning Spain as quantum communications leader in Europe and Latin America.

University of Vigo (Universidade de Vigo) is a Spanish public research university founded in 1989 and headquartered in Vigo, Galicia, Spain, with Quantum Division participating in Spain’s QKD-GEO quantum key distribution geostationary satellite mission. The university is part of the large industrial consortium led by Thales Alenia Space developing quantum communications technology for space-based quantum key distribution. University of Vigo brings expertise in telecommunications, photonics, and quantum optics to satellite QKD research and development. The university collaborates with Institute of Astrophysics of the Canary Islands, Polytechnic University of Madrid, Thales Alenia Space, and Hispasat advancing quantum-safe satellite communications infrastructure. University of Vigo conducts research in quantum communications, quantum cryptography protocols, and photonic quantum technologies for space applications. The university serves European quantum research community, quantum technology companies, and government agencies requiring quantum communications research, quantum optics expertise, and satellite QKD technology development. The university contributes to Spanish quantum technology ecosystem and European quantum communications infrastructure initiatives.