india-demonstrates-1-000-km-quantum-communication-network

India has successfully built and tested a 1,000-kilometre-long ultra-secure communication network using advanced quantum technology, the government said on Friday, marking a key milestone under the National Quantum Mission.

 

Put simply, this new system is designed to make communication nearly impossible to hack. Unlike regular internet or phone networks, which can be intercepted, quantum communication uses the laws of physics to protect data.

 

The network was developed in less than two years using technology from QNu Labs, a startup supported by the government. The original plan was to build a 2,000-km network over eight years, but this early success suggests the target could be reached much faster.

 

Officials said the system works by creating “secret keys” that are used to encrypt messages. If anyone tries to intercept the data, the system immediately detects it, making hacking extremely difficult.

 

“This is a major step forward,” said Abhay Karandikar, Secretary at the Department of Science and Technology, adding that the progress has exceeded initial expectations.

Also read: India’s first quantum computers to go live on April 14

The technology is expected to be used in sectors where security is critical, such as defence communications, banking systems, and government networks. It could also help protect sensitive information from future cyberattacks, including those from advanced computers.

 

One key advantage is that the system can work in difficult conditions, including underground, underwater, and in crowded cities, making it flexible for real-world use.

 

The government is also backing more startups in this space, with the total number rising to 17. These companies are working on related technologies such as advanced sensors, navigation systems, and next-generation electronics.

 

The development builds on earlier work by the Defence Research and Development Organisation (DRDO), which had successfully tested a shorter version of such secure communication links last year.

 

India launched the National Quantum Mission in 2023 with a budget of over Rs 6,000 crore to push research and development in this cutting-edge field.

 

With this breakthrough, India is moving closer to building a nationwide network that could redefine how sensitive information is protected in the future — making communication faster, safer and far more secure.