Zerothird

Nobel Prize-winning technology in Quantum communication effectively securing data networks in critical infrastructure.

Customer base and partners: providers of critical infrastructure, largest bank in Central and Eastern Europa, global hyperscaler, and others

What it does: entangled quantum key distribution technology with superior performance credentials. Zerothird was founded by the former core team of Nobel laureate Dr. Anton Zeilinger (Physics, 2022).

Why it matters: as computing power increases, security standards must move beyond classical assumptions; quantum-safe infrastructure becomes strategic.

Sparring’s role: commercial scaling, ecosystem partnerships and strategic support.

Milestone: Building Europe’s largest commercial quantum network and leading role within the European Quantum Communication Infrastructure Program (EuroQCI)

Co-Investors: Verbund-X, KGALi, Findus Ventures

Founded: 2022
Backed by Sparring since: 2024
Founders: Rupert Ursin, Thomas Scheidl, Felix Tiefenbacher
Sparring Lead: Michael Steiner