A recent trial conducted by Colt and Ciena successfully demonstrated quantum-safe data transmission across a transatlantic network, achieving an 800GbE service rate over 6,900 km of subsea and terrestrial infrastructure. The trial utilized Ciena's WaveLogic 6 Extreme encryption technology, which incorporates post-quantum cryptography capabilities to secure live data in transit1. This feat showcases the feasibility of high-speed quantum-safe connectivity for various applications, including enterprise, government, healthcare, and hyperscale networks. The demonstration highlights the increasing urgency for organizations to plan and implement post-quantum cryptography (PQC) migrations, as quantum developments continue to narrow the timeline for cryptographic upgrades. This trial's success has significant implications for the security of sensitive data transmitted across global networks, so the ability to implement quantum-safe solutions will be crucial for protecting against future quantum computing threats.