Field trial of multi-node, coherent-one-way Quantum Key Distribution with encrypted 5×100G DWDM transmission system

We report on the launch of a link using Quantum Key Distribution (QKD) integrated with 500Gbps encrypted data over 121 km between Adastral Park and Cambridge, UK. This is the first field trial of a Coherent-One-Way QKD system integrated with a commercial-grade encrypted DWDM system.