Scientists teleport quantum data 19 miles across Berlin in live test

In January 2026, researchers from Deutsche Telekom’s T-Labs and Brooklyn-based Qunnect successfully teleported quantum data across a 19-mile (30-kilometer) loop of commercial fiber in Berlin, achieving a peak fidelity of 95% and an average accuracy of 90%. This experiment demonstrated quantum teleportation—transferring quantum information without moving particles physically—over existing metropolitan fiber optic infrastructure alongside regular data traffic. Using Qunnect’s Carina entanglement distribution platform and Deutsche Telekom’s quantum network hardware, the team maintained stable entangled photon transmission despite environmental challenges like temperature shifts and vibrations. This milestone marks a significant step toward integrating quantum communication technologies into real-world telecommunications networks, enabling secure long-distance data transfer and laying the foundation for future quantum cryptography, distributed computing, and quantum data centers. Deutsche Telekom emphasized that their fiber optic network is now "quantum ready," supporting the potential for linking quantum computers and enhancing Europe’s technological sovereignty. Building on prior trials, this