LuxQuanta’s €8M Round Makes Turnkey Quantum Encryption Possible
Barcelona based LuxQuanta announced that it has raised €8 million in Series A financing. The round was led by Big Sur Ventures, with A&G as the largest investor, and participation from GMV, Wayra, and the EIC Fund. Existing investors Corning and GTD re-upped.
LuxQuanta develops continuous-variable quantum key distribution systems intended to slot into existing optical networks. The firm’s second-generation NOVA LQ platform, launched at MWC 2025, targets point-to-point and point-to-multipoint topologies and is positioned to work alongside classical data traffic. Reported performance includes secret key rates above 100 kbps at 4 dB loss and operation up to 20 dB loss, with standards alignment to ETSI GS QKD 014 and SKIP interfaces for multi-vendor integration.
What does this mean in ELI5 terms? In LuxQuanta’s system, a transmitter sends very weak laser pulses over standard fiber, with tiny, random changes in amplitude and phase that encode random numbers. Unlike the systems we traditionally call “quantum,” the focus here is creating highly secure keys by using those fluctuations to produce truly random numbers.
“This Series A funding is a powerful validation of our vision to safeguard global communications in the quantum era,” said Vanesa Díaz, CEO of LuxQuanta. “With this investment, we will scale our operations, enhance our technology, and expand our global footprint. The journey to quantum-safe networks is critical, and it starts now.”
More importantly, this technology enables quantum encryption to happen now, not in the near future. By, as Díaz notes, growing from “promising startup to a global scale-up,” the company is able to launch its Continuous-Variable Quantum Key Distribution (CV-QKD) technology into more situations where security is vital.
“LuxQuanta is poised to democratize quantum-safe communications, delivering robust, scalable, and accessible solutions for telecommunications, governments, data centers, financial institutions, critical infrastructures and industrial and energy sectors,” wrote the company.
Díaz leads the team alongside CTO Dr. Sebastian Etcheverry. Before LuxQuanta, Etcheverry was a postdoctoral researcher in ICFO’s Optoelectronics group, contributing to QKD prototypes that underpinned the spin-off. He holds a PhD in Engineering/Applied Physics from KTH Royal Institute of Technology.
Backing by EU-connected investors and the EIC signals continued interest in developing regional capacity for quantum-safe communications. For NATO members and partners, indigenous vendors can simplify security accreditation and export control considerations using LuxQuanta’s tech. Finally, because it runs on standard networks, the solutions can be enabled nearly anywhere that absolute security and control are needed.