In a first-of-its-kind initiative, the Indian Space Research Organisation (ISRO) successfully demonstrated free-space Quantum Communication over a distance of 300 metres, with several technologies developed within the country. The demonstration included live video conferencing using quantum-key-encrypted signals, at Space Applications Centre (SAC), Ahmedabad, between two line-of-sight buildings within the campus.
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The experiment was done at night to ensure that there is no interference from the direct sunlight. This is a major milestone achievement for unconditionally secured satellite data-communication using quantum technologies.
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