High Speed (100 Gbps) Encrypted Optical Communications System Based on QKD and Optical Code Scrambling

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Quantum key exchange is used to seed optical code scrambling (OCS), in order to provide significantly enhanced security at high speed (>100 Gbps) data rates.The aim of the project is to investigate the feasibility of combining QKD and TDSPE (time domain spectral phase encoding) techniques to provide double-security in high speed optical communication systems. The integrated system will be demonstrated using the deployed link in the Cambridge Quantum Network (part of the Hub’s UK Quantum Network).