STL & C-DOT Achieve India’s First Quantum-secured Network Breakthrough with Multi-Core Fibre

STL and C-DOT have announced the successful demonstration of India’s first Quantum Key Distribution (QKD) transmission over 100 kms, 4-core Multi-Core Fibre (MCF) network. This achievement marks a significant step in building India’s first quantum-secured, future-ready communication networks. STL has designed, developed and deployed India-first MCF cable as an end-to-end solution, spanning cabling, connectivity, installation, and deployment. The quantum signals of QKD were transmitted through one core while the other three cores were used to carry high-speed user data simultaneously, proving its resilience in real-world network conditions. This development reaffirms their commitment to enabling a secure, scalable, and resilient quantum communication network for India.