Arqit and Sparkle demonstrate quantum-resilient data transmission across optical network in Greece.
ByAinvest
Wednesday, Dec 3, 2025 9:07 am ET1min read
ARQQ--
Arqit Quantum and Sparkle have successfully demonstrated quantum-resilient data transmission across Sparkle's optical network in Greece. The proof of concept shows how Arqit's encryption technology can be embedded into the optical transport layer, protecting high-capacity networks against future quantum threats without impacting performance. The demonstration validated that sensitive data can be secured at the physical network layer without compromising performance.
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