Source: BS
Context: India successfully demonstrated quantum entanglement-based secure communication over 1 km in open air. This breakthrough was achieved by DRDO and IIT Delhi, marking a leap toward unhackable networks.
About India’s Quantum Leap in Communication:
- What Is the Achievement?
- India has entered the quantum communication era by showcasing Quantum Key Distribution (QKD) in open air using entangled photons, enabling unbreakable encryption.
- Developed By:
- Defence Research and Development Organisation (DRDO)
- Indian Institute of Technology (IIT) Delhi
- How Quantum Communication Works?
- Utilizes quantum entanglement, where two particles remain interconnected—any change in one instantly reflects in the other.
- Quantum Key Distribution (QKD) ensures secure sharing of encryption keys.
- If an eavesdropper tries to intercept, the quantum state collapses, instantly alerting both sender and receiver.
- Key Features of the Breakthrough:
- One-kilometre Secure Wireless Communication: India achieved quantum communication over a 1-km distance in open air, without relying on fiber cables or lab-enclosed systems.
- Secure Key Rate – 240 bps: The system successfully transmitted encryption keys at a secure rate of 240 bits per second, suitable for critical data security.
- Low Error Rate – Below 7%: The quantum link maintained a transmission error rate under 7%, ensuring stability and reliability for practical deployments.
- Open-Air (Free-Space) Demonstration: Unlike fiber-based QKD, this milestone occurred outdoors, showcasing the feasibility of wireless quantum communication in real-world conditions.
- Indigenous Quantum Hardware: The entire setup was developed using locally sourced photonic components, marking a step toward Atmanirbhar Bharat in quantum tech.
- Significance for India:
- Supports India’s National Quantum Mission and strategic tech autonomy.
- Enables development of military-grade, banking, and governance encryption systems.
- Prepares groundwork for urban quantum networks and battlefield-secure communication.
- Aligns India with global leaders like China and the US in quantum networking.
