Arqit Quantum (ARQQ) and Sparkle demonstrated quantum-resilient data transmission across Sparkle’s optical network in Greece. The proof of concept, implemented over Sparkle metropolitan optical ring in Athens, shows how Arqit’s encryption technology can be embedded directly into the optical transport layer, protecting high-capacity networks against future quantum threats without impacting performance. Sparkle validated that sensitive data can be secured at the physical network layer without compromising performance. Following the deployment of Arqit’s technology, end-to-end encryption was successfully applied to multi-100G optical links. This demonstrated that quantum-resistant protection can be delivered at the speed of light, ensuring ultra-secure data transmission without compromising performance.
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