Longest, Secure Quantum Communication Distance Globally
Trusted-node-free Secure Quantum Communication for 380 km in Standard Telecom Fiber
Tags: IIT Delhi, India, Computing Technology
Researchers at IIT Delhi have achieved a trusted-node-free quantum key distribution (QKD) over 380 km of standard telecom fiber with a low quantum bit error rate (QBER). This milestone in the Differential Phase Shift (DPS) QKD protocol marks the longest secure quantum communication distance globally. Applications include securing financial transactions, medical records, and IoT networks. The breakthrough eliminates intermediate trusted nodes, enhancing the security of long-distance communications. This innovation is poised to revolutionize cyber security, paving the way for commercial QKD devices.
IP Type or Form Factor: Device; Software & Algorithm
TRL: 6 - prototype validated in intended environment
Industry or Tech Area: Computing Security; Quantum Computing & Communication
