UK achieves first long-distance secure data transfer over a quantum network
Researchers from the Universities of Bristol and Cambridgen have successfully conducted the UK’s first long-distance, ultra-secure data transfer using a quantum communications network. In years to come, quantum computers will be able to perform calculations exponentially faster than classical computers. As such, they pose a threat to cyber security as their brute computational strength means they will be able to break current encryption standards protecting data. This has spurred efforts to develop new quantum-proof approaches to secure communications, including quantum key distribution (QKD). QKD allows cryptographic keys, which are generated from a sequence of polarised photons, to be shared in a way that makes it physically impossible to eavesdrop without being detected. In the past…