LuxQuanta raises €8 million Series A to accelerate commercial rollout of CV-QKD
- ›LuxQuanta closed an €8 million Series A round led by Big Sur Ventures with participation from A&G, GMV, Wayra/Telefónica, the EIC Fund and existing backers Corning and GTD.
- ›The funding will scale production and R&D for the company's Continuous-Variable Quantum Key Distribution product NOVA LQ® and advance integrated photonics development under the MIQRO project.
- ›LuxQuanta claims interoperable, carrier-grade CV-QKD with DWDM co-propagation, 100 km reach and key rates above 100 kbps at low loss, but practical limits and deployment costs remain open questions.
- ›The EIC Accelerator programme previously provided blended finance including a €2.5 million award in March 2024, signalling public backing for EU quantum cybersecurity initiatives.
LuxQuanta raises €8 million Series A to accelerate commercial rollout of CV-QKD
Barcelona headquartered LuxQuanta Technologies announced on 15 October 2025 that it has closed an €8 million Series A round. The financing was led by Big Sur Ventures and includes A&G, GMV, Wayra which is Telefónica’s corporate VC, the EIC Fund, and returning investors Corning and GTD. The company says the proceeds will be used to scale production, expand teams, advance integrated photonics, and accelerate international go to market for its Continuous-Variable Quantum Key Distribution product family, NOVA LQ®.
What the funding covers and who is backing it
LuxQuanta frames the round as a transition from startup to scale-up. Planned uses cited by the company include ramping manufacturing capacity, expanding commercial and technical teams, moving to larger facilities, and continuing R&D in quantum technologies and photonic integration. The company also highlights existing public support through the European Innovation Council. In March 2024 LuxQuanta received blended finance via the EIC Accelerator including a €2.5 million contribution. The EIC Fund participated again in this Series A.
| Investor | Role or note |
| Big Sur Ventures | Lead investor. Spanish deep tech VC providing capital and strategic support |
| A&G (A&G Energy Transition Tech Fund) | Listed as a major new investor aligning with critical infrastructure and energy sector needs |
| GMV | Strategic industrial investor with expertise in space, defence, cybersecurity and telecoms |
| Wayra / Telefónica | Corporate VC. Partnership intended to accelerate telecom deployments |
| EIC Fund | Public investor via the European Innovation Council, follows earlier EIC Accelerator support |
| Corning | Existing investor and returning backer |
| GTD | Existing investor and returning backer |
Product claims and technology in plain terms
LuxQuanta’s headline product is NOVA LQ®, a Continuous-Variable Quantum Key Distribution system. The company launched a second generation in March 2025 and positions the product as 'carrier grade' and ready for integration with existing optical networks. Key technical claims include support for DWDM co-propagation so the quantum channel can share fibre with classical data channels, reach of up to 100 kilometres in metropolitan links, a compact 2U form factor, and multi receiver support to enable star and ring topologies without a separate transmitter for each receiver.
| Specification or claim | Company figure or description |
| Secret key rate | >100 kbps at 4 dB channel loss; 1 kbps at 16 dB channel loss |
| Maximum operable channel loss | Up to 20 dB |
| Reach | Up to 100 km in metropolitan deployments |
| Form factor | 2U rack mount, integrated post processing |
| Topologies supported | Point to point and point to multipoint with multi receiver capability |
| Standards interoperability | Claims compliance with ETSI GS QKD 014 and SKIP interfaces for integration with KMS and encryptors |
| Co-propagation | DWDM compatible so quantum and classical channels can share a fibre |
Commercial traction, pilots and use cases
LuxQuanta says it has been commercialising QKD since early 2023 and reports multi million euro sales across more than dozens of European countries with deployments in Asia Pacific, Latin America and the United States. The company lists target customers as telecommunications providers, governments, data centres, financial institutions, healthcare organisations, utilities and satellite communications providers. Recent demonstrators and partnerships mentioned by the company include a quantum safe network demo at AWS Singapore and work with Juniper Networks, lyntia and Merqury Cybersecurity to connect data centres and cloud services.
Public backing and EU programme context
LuxQuanta is an ICFO spin off founded in May 2021. The company has been awarded public finance and participated in EU-backed projects. Its MIQRO project advanced under the EIC Accelerator Blended Finance scheme from 1 June 2024. The EIC Fund participated in the Series A and publicly framed its investment as support for Europe’s push for quantum-safe infrastructure. Public funding and EIC validation are meaningful for credibility and access to networks. They do not by themselves confirm commercial scale or unit economics.
What to watch and remaining questions
LuxQuanta presents a credible engineering approach to CV-QKD and useful product features for telecom integration. At the same time the move from prototype and pilot to mass deployment exposes several technical and commercial hurdles that are worth noting. Integration into large telco networks requires long term reliability, serviceability, and predictable total cost of ownership. Photonic integrated circuits can reduce costs but need foundry ecosystems and supply chains that are still evolving for quantum photonics. Standards and certification frameworks are progressing but are not yet mature enough to guarantee plug and play interoperability in all vendor environments.
Other open questions include unit economics per key delivered, lifecycle maintenance costs in carrier environments, scalability of manufacturing, and the operational burden of integrating quantum hardware into existing key management and encryption ecosystems. LuxQuanta points to ETSI standards compliance and SKIP interface support to ease integration, but real world multivendor interoperability tests will be important.
Investor and company statements
LuxQuanta’s CEO Vanesa Díaz said the funding validated the company vision and would be used to scale technology and expand global footprint. Big Sur Ventures and A&G framed their investments as support for a European leader in quantum-safe infrastructure and for securing critical sectors. GMV and Wayra highlighted technical and market synergies. The EIC Fund described the investment as confidence in LuxQuanta’s potential to lead the transition to quantum-safe infrastructure in Europe.
Conclusion: pragmatic optimism with caveats
The €8 million round and existing EIC support give LuxQuanta useful runway to industrialise CV-QKD and advance photonic integration. The company’s claims on interoperability, DWDM co-propagation and metropolitan reach address real barriers to adoption. However the scale up to mass market adoption will require successful cost reduction through PICs, demonstrated long term reliability in carrier networks, and clearer economics compared with PQC alternatives. Public backing and early commercial deployments improve the odds but do not remove implementation risks. Observers should look for independent interoperability tests, carrier-grade field trials, and published lifecycle cost figures as next validation steps.
Further reading and sources
This article synthesises the company press release dated 15 October 2025, LuxQuanta product materials, and public information about the EIC Accelerator and the EIC Fund. Interested readers can consult the company website, the Horizon Europe project database entry for MIQRO, and ETSI documents on QKD standards for more technical background.