LuxQuanta Series A lands €8M to secure the quantum future

Barcelona-based deep tech firm LuxQuanta has just closed an €8 million Series A funding round, a significant injection of capital aimed at accelerating the global deployment of its quantum-safe cybersecurity solutions. The investment, led by Big Sur Ventures with A&G as the largest investor, and including new backers like GMV, Wayra, and the EIC Fund alongside existing investors Corning and GTD, signals a critical push to fortify digital infrastructure against the looming threat of quantum computing.

This isn't just another funding announcement; it marks LuxQuanta’s transition from a promising startup to a global scale-up. The funds are earmarked for scaling production of their award-winning Continuous-Variable Quantum Key Distribution (CV-QKD) technology, advancing R&D in quantum technologies and integrated photonics, and significantly expanding their commercial and operational teams for international market penetration.

The urgency for quantum-safe solutions is palpable. Experts warn of "harvest now, decrypt later" attacks, where encrypted data is collected today, only to be decrypted by powerful quantum computers in the future. Current encryption standards are simply not built to withstand such an assault. LuxQuanta's flagship product, NOVA LQ®, launched in its second generation in March 2025, aims to bridge this security gap. It’s designed for seamless integration into existing optical networks, offering robust protection for telecommunications, governments, data centers, financial institutions, and critical infrastructure.

Securing the Next Digital Frontier

NOVA LQ® stands out with several key features. It implements the rigorously tested Gaussian-modulated coherent-state (GMCS) CV-QKD protocol, validated against sophisticated collective attacks. Built with production-grade hardware, it promises superior operational reliability and low maintenance. Crucially, its unmatched scalability supports both point-to-point and point-to-multipoint configurations, effectively halving network expansion costs while maintaining top-tier security. The system also adheres to ETSI GS QKD 014 and SKIP interfaces, ensuring interoperability with multi-vendor encryptors and key management systems. With high secret key rates and extended operational reach, LuxQuanta is positioning its technology as a practical, high-performance solution for the quantum era.

Vanesa Díaz, CEO of LuxQuanta, emphasized the strategic importance of this round. "This Series A funding is a powerful validation of our vision to safeguard global communications in the quantum era," she stated. "The journey to quantum-safe networks is critical, and it starts now. We’re committed to making quantum security accessible and reliable for organizations worldwide."

The company, a spin-off from Barcelona’s ICFO, has already seen multi-million euro sales across Europe and deployments in Asia Pacific, Latin America, and the USA. Investors like Big Sur Ventures and A&G highlight LuxQuanta’s proven technology and its focus on integrated photonics as a "game-changer." Wayra, Telefónica’s corporate venture capital arm, underscored the partnership's role in driving industry transformation and strengthening Europe’s technological sovereignty in quantum communications. This Series A isn't just about capital; it's a strategic alignment to democratize quantum-safe communications and set a new global standard for cybersecurity.