Indian start-up breaks distance barrier in secure communications

New Delhi, 7 Jun (PTI): India’s deep technology start-up QNu Labs has broken the distance barrier by achieving secure communications over 325 km of existing optical fibre network using quantum technology-based solutions, the company said on Tuesday.

“The feat is remarkable as we have used the existing optical fibre for implementation of the secure key transfer first over 150 km and through a couple of hops using the Trusted Relay Node technology,” Sunil Kumar Gupta, co-founder and CEO of QNu Labs told PTI.

He said QNu Labs has become the first company globally to demonstrate secure communication over 325 km using the indigenously developed Armos Quantum Key Distribution (QKD) technology and it could be extended to any length using the Trusted Relay Node.

This extensive field demonstration was carried over seven days in April 2022 in northern India, in one of the harshest terrains in the world.
Gupta said other companies had achieved a similar feat using specially developed super conducting fibre, whereas the technology developed by QNu works on existing fibre optic networks.