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This demonstration marks a significant milestone in India's quantum infrastructure by successfully establishing a 5.56 km free-space QKD link that integrates post-quantum cryptography for resilient security. The trial validates the technical feasibility of terrestrial optical mesh networks and satellite-to-ground communications using advanced pointing, acquisition, and tracking systems to counter atmospheric turbulence.

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QNu Labs, BISAG-N, and IIT Gandhinagar Demonstrate India’s First 5.56 km Free-Space QKD Link

Quantum Computing ReportOctober 5, 20262 min read

QNu Labs, BISAG-N, and IIT Gandhinagar successfully conducted India's first 5.56 km free-space Quantum Key Distribution (QKD) link. This trial, utilizing QNu Labs' PAT optical system, achieved a secure key rate of 230–260 bps and integrated with BISAG-N's Vedic Kavach platform for enhanced security. This breakthrough establishes a baseline for future multi-node optical mesh networks and satellite-to-ground quantum communications. The post QNu Labs, BISAG-N, and IIT Gandhinagar Demonstrate India’s First 5.56 km Free-Space QKD Link appeared first on Quantum Computing Report.

Indian quantum cybersecurity enterprise QNu Labs, in collaboration with the Bhaskaracharya National Institute for Space Applications and Geo-informatics (BISAG-N) and the Indian Institute of Technology (IIT) Gandhinagar, has completed a 5.56 km free-space Quantum…

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