Researchers at Toshiba Europe achieved a groundbreaking feat by employing quantum key distribution (QKD) to send secure messages over 254 km using traditional fiber optic cables. This milestone, showcasing coherent quantum communication, signifies a step towards ultra-secure encryption capable of withstanding future cyber threats. In their experiment, light-based quantum messages were transmitted without needing costly equipment like lasers or cryogenic systems. The team connected data centers in Germany, demonstrating practical quantum communication's potential as they surpassed previous transmission records. This innovation aims to facilitate greater industry adoption of quantum technologies for secure communications.
This work opens the door to practical quantum networks without needing exotic hardware. It lowers the entry barrier for industry adoption.
The network connected telecom data centres in Frankfurt and Kehl via a relay node in Kirchfeld, marking a significant advance in quantum communication.
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