IIT Delhi and DRDO redefine secure communication with quantum tech

IIT Delhi and DRDO have demonstrated cutting-edge advancements in quantum communication. These technologies promise unparalleled security for critical sectors like defence and finance.

In Short

• IIT Delhi, DRDO achieve quantum tech milestone
• It developed photon sources and detectors for secure communication
• Secure communication enhanced via QKD systems

IIT Delhi and DRDO have achieved a major milestone in secure communication with their successful demonstration of quantum communication technologies. Their experiments set a new benchmark for robust and tamper-proof communication, essential for defence and strategic sectors. The research focused on Quantum Key Distribution (QKD), a cutting-edge method of encrypting information that cannot be hacked without detection.

QKD was demonstrated using fibre-optic cables over 50 km in the lab and 8 km across the IIT Delhi campus. The experiments also included free-space setups where QKD was tested over short distances, like 20 metres in the lab and 80 metres in open space.

USING FREE-SPACE TECHNOLOGY, INDIGENOUS INNOVATIONS

Free-space quantum communication experiments made use of the BBM-92 protocol, an advanced technique that uses photon pairs to securely exchange information.

Another standout achievement was hybrid entanglement, which achieved a very low error rate, making it a promising option for future communication systems. IIT Delhi and DRDO have focused on developing homegrown components like single-photon sources and high-performance detectors.

This effort reduces reliance on imports and strengthens India’s capabilities in quantum technology. With breakthroughs in fibre and free-space quantum communication, this collaboration sets the stage for secure communication in critical areas like defence and finance.

ADVANCING INDIA’S QUANTUM FUTURE

These advancements build on India’s first QKD demonstration in 2022, where quantum communication was established over 100 km between Prayagraj and Vindhyachal. IIT Delhi and DRDO continue to explore new ways to enhance secure communication, funded by deep-tech initiatives for defence innovation.

Quantum technology promises a future where sensitive information can be transmitted without fear of interception, marking a huge leap in secure communication.