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India to Set Ground for Quantum Communication From Ladakh
- India is set to deploy quantum key distribution (QKD) technology to secure information transmission in locations across the country including Ladakh.
- Urbasi Sinha, professor at the Raman Research Institute (RRI) carried out research to estimate the signal strength, atmospheric losses, and alignment for secure satellite-to-ground quantum communication.
- The study took into account three locations to identify ideal sites for ground stations for quantum communication - Mount Abu, Nainital, and Hanle (Ladakh).
- Quantum communication is unlikely to replace classical communication systems like 5G, but is valuable for serving as an additional security layer in sectors like defence, banking, and healthcare.
- The research conducted with Satya Ranjan Behera, a scientist at RRI, marks a critical step toward satellite-based quantum communication where signal integrity over vast distances is key.
- Claude Shannon called quantum 'information-theoretically secure' but it is important to address vulnerabilities and develop robust defences.
- Indian researchers are turning to AI and ML tools to mitigate signal disruptions caused by atmospheric variability.
- ISRO plans to transition toward engineering-focused development for satellite deployment, having developed the necessary groundwork.
- However, a key challenge lies in quantum communication's uplink and downlink processes.
- Conducting research across various sites poses unique problems for researchers, and procurement of specialised tools and collaboration with experts proved invaluable.
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