RRI researchers, Isro show secure satellite-based quantum communication

Researchers at the Raman Research Institute (RRI) have successfully demonstrated secure communication established between a stationary source and a moving receiver using Quantum Key Distribution (QKD).

This breakthrough demonstration could pave the way for ground-to-satellite-based secure quantum communication in future, a statement issued by the RRI said on Saturday.

"These results, scientists say, could help India design and provide secure communication channels, especially for defence and strategic purposes, enhance cyber security and make online transactions safer than today," the statement read.

In order to achieve this feat, a team of researchers led by Prof Urbasi Sinha at the Quantum Information and Computing (QuIC) lab deployed the indigenously developed Pointing, Acquisition and Tracking (PAT) system.

The PAT assisted the ground-based source in tracking the moving receiver in this case, a terrestrial vehicle, a few metres apart.

The successful experimental demonstration