The company's quantum-safe cryptographic platform is designed to protect critical communications and infrastructure against emerging quantum computing threats.
Quantum Bridge Technologies has closed a $8 million Series A funding round led by Primo Capital SGR to accelerate the global transition to quantum-safe cybersecurity infrastructure.
Founded in 2019 by Mattia Montagna and Hoi-Kwong Lo, Quantum Bridge emerged from one of the world’s leading quantum security research groups to deliver quantum-safe security solutions.
Quantum Bridge addresses the systemic threat posed by quantum computing to current cryptographic infrastructure.
The company’s patented Distributed Symmetric Key Establishment (DSKE) protocol enables organisations to generate, distribute, and manage symmetric keys through a decentralised architecture, removing single points of failure, improving scalability, and strengthening long-term cryptographic resilience.
Quantum Bridge brings advanced cryptographic security into practical deployment, grounded in well-established principles that have stood the test of time. Designed to work across existing infrastructure, vendors, and security layers, the company’s platform allows organisations to add quantum-safe protection from optical encryptors to application-level systems without disrupting existing operations.
By making defence-grade security practical for commercial environments, Quantum Bridge helps customers advance their quantum-safe migration with greater scalability, flexibility, and confidence.
“National security can’t wait for perfect conditions,” said Mattia Montagna, co-founder and CEO of Quantum Bridge Technologies.
“We build quantum-safe systems that work inside real networks today — systems designed to keep protecting sovereign communications as the threat landscape evolves.
This funding means we can meet more organisations where they are, and get them protected faster.”
The funding round was supported by a global syndicate of investors, including Wayra (Telefónica), Cadenza VC, Club degli Investitori angels, HPE, and Bacchus Venture Capital.
Together with prior financing, the round brings Quantum Bridge’s total capital raised to $16 million.
“Leading this round represents a defining milestone for Primo Capital as we establish our footprint in the quantum technology landscape — a sector we view as the cornerstone of digital resilience for the coming decade,” said Mara Attardi, an investment professional at Primo Capital.
“Quantum Bridge immediately stood out for the versatility of its architecture, but it was the team that clinched our conviction.
The CEO possesses that rare, dual-threat leadership: the deep academic rigour required to build cutting-edge tech and the commercial acumen to navigate the complexities of global institutional markets. This is a team that doesn’t just understand the quantum future; they have built the bridge to reach it today.”
Lead image: Mattia Montagna, co-founder and CEO of Quantum Bridge Technologies.