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QNu Labs has successfully demonstrated India's first long-distance free-space quantum key distribution link, proving that quantum communication can operate stably over 5.56km in real-world atmospheric conditions. By integrating precise pointing systems with post-quantum cryptography, this trial validates the practical feasibility of deploying quantum security on existing communication infrastructure rather than just in controlled labs. This milestone marks a significant step toward scalable quantum networks that protect data against future computational threats.

Sources coveringQuantum Zeitgeist, Quantum Computing Report, LessWrong, itbusinessnet.com

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QNu Labs and partners send quantum keys 5.56km through the air

Quantum ZeitgeistOctober 5, 20262 min read

QNu Labs, BISAG-N, and IIT Gandhinagar achieved India’s first 5.56km free-space quantum key distribution (QKD) link, integrating quantum security with BISAG-N’s Vedic Kavach platform.

QNu Labs, BISAG-N, and IIT Gandhinagar have established India’s first 5.56 kilometer free-space Quantum Key Distribution (QKD) link, integrating quantum security with a post-quantum cryptography platform. The trial, conducted between BISAG-N and IIT Gandhinagar, achieved a stable secure key rate of 230-260 bits per second…

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