Barcelona Headquartered LuxQuanta Raises €8 Million to Enhance Global Data Protection Against Quantum Threats
Barcelona-based deep tech startup LuxQuanta has completed an €8 million Series A funding round to support the global rollout of its quantum-safe cybersecurity solutions. The investment was led by Big Sur Ventures, with A&G as the primary investor, and participation from new stakeholders, including: GMV, Wayra, the EIC Fund, and returning investors Corning and GTD.
This funding milestone marks LuxQuanta’s progression from startup to international scale-up. The proceeds will be utilized to expand production capacity for its award-winning Continuous-Variable Quantum Key Distribution (CV-QKD) technology, advance research and development in quantum technologies and integrated photonics, and grow its commercial and operational teams to support entry into global markets.
The demand for quantum-resistant solutions continues to increase. Industry experts have highlighted risks such as “harvest now, decrypt later” attacks, where data encrypted today may become vulnerable once quantum computing capabilities mature. Existing encryption methods are not equipped to counteract these future risks. To address this, LuxQuanta’s NOVA LQ, now in its second generation as of March 2025, is engineered for integration with current optical networks, delivering enhanced security for telecommunications, government entities, data centers, the financial sector, and other critical infrastructure.
NOVA LQ features the Gaussian-modulated coherent-state (GMCS) CV-QKD protocol, which has been rigorously validated against advanced collective attacks. Utilizing production-grade hardware, the system offers high reliability and low maintenance requirements. Its scalability supports both point-to-point and point-to-multipoint configurations, effectively reducing network expansion costs while maintaining robust security standards. Compliance with ETSI GS QKD 014 and SKIP interfaces ensures interoperability across multiple vendor systems. With high secret key rates and extended reach, LuxQuanta positions its solution as a practical, high-performance tool for organizations preparing for the quantum era.
Vanesa Díaz, CEO of LuxQuanta, commented on the strategic importance of the recent investment: “This Series A funding is a significant endorsement of our mission to secure global communications in the quantum age. Developing quantum-safe networks is imperative, and our goal is to make quantum security accessible and dependable worldwide.”
As a spin-off from Barcelona’s ICFO, LuxQuanta has achieved multi-million euro sales throughout Europe and is also seeing growth in sales across Asia Pacific, Latin America, and the United States. Investors including Big Sur Ventures and A&G have emphasized the strength of LuxQuanta’s technology and its advancements in integrated photonics. Wayra, Telefónica’s corporate venture capital firm, also acknowledged the collaboration’s role in advancing industry transformation and European leadership in quantum communications. To this end, LuxQuanta’s Series A round represents not only capital acquisition but a strategic partnership aimed at making quantum-safe communication more widely available and establishing new standards in cybersecurity.