India Demonstrates 1,000-km Quantum Communication Network

In April 2026, India achieved a major breakthrough by successfully demonstrating a 1,000-kilometre quantum communication network under the National Quantum Mission, surpassing initial targets and strengthening secure communication capabilities.

What is the Achievement?

• Developed a 1,000-km quantum communication network.
• Achieved in less than two years.
• Original target: 2,000 km network in 8 years.
• Among the longest Quantum Key Distribution (QKD) networks globally.

Institutions Involved

• Department of Science and Technology - Lead agency.
• QNu Labs - Indigenous technology developer.

What is Quantum Communication?

• Uses principles of quantum mechanics.
• Enables ultra-secure data transmission.
• Based on Quantum Key Distribution (QKD).
• Any interception attempt disturbs the system → detectable.

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