Inauguration of new fibre-optic testbed for quantum network research
The testbed enables researchers to transmit and test quantum keys using state-of-the-art technologies such as highly coherent lasers. Unlike conventional encryption based on mathematical assumptions vulnerable to future quantum computers, quantum key distribution relies on fundamental physical laws, providing tap-proof communication. The optical fiber's light-conducting core has a diameter of only 9 micrometres - approximately seven times thinner than a human hair. Beyond quantum key distribution, the researchers aim to establish a quantum network capable of transmitting quantum entanglement, extending the range of quantum communication and enabling the interconnection of quantum computers in a future quantum internet.
The facility is part of the Chem4Quant excellence cluster initiative (KIT, University of Ulm, University of Stuttgart), contributes to the BMBF-funded Quantenrepeater.Net project, and supports the Baden-Württemberg-wide QuantumBW innovation campus. Collaboration partners include KEEQuant, a quantum cryptography startup, with whom first quantum keys have already been exchanged between the two campuses.
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