DRDO and IIT Delhi Demonstrate 1 km Free-Space Entanglement-Based Quantum Communication
Mohamed Abdel-Kareem2025-06-20T13:51:35-07:00India’s Ministry of Defence announced a major milestone in quantum communications: the successful demonstration of quantum entanglement-based secure communication over a one-kilometer free-space optical link. The experiment was conducted on the IIT Delhi campus as part of a project led by Professor Bhaskar Kanseri and supported by the Defence Research and Development Organisation (DRDO) under its Directorate of Futuristic Technology Management. The test achieved a secure key rate of approximately 240 bits per second with a quantum bit error rate below 7%. This marks a significant step toward practical deployment of entanglement-assisted quantum key distribution (QKD), a method that offers stronger [...]