Q. Which two Indian institutions recently demonstrated quantum communication over 1 km in free space?
Answer: Indian Institute of Technology (IIT) Delhi and Defence Research and Development Organisation (DRDO)
Notes: Recently, the Ministry of Defence announced that scientists from the Indian Institute of Technology (IIT) Delhi and the Defence Research and Development Organisation (DRDO) successfully demonstrated quantum communication over more than 1 km in free space. Quantum communication is a super secure method of sending information using tiny particles like photons. It uses principles of quantum physics, especially entanglement, to make communication channels tamper-proof. If someone tries to intercept the photons, the disturbance will be detected, revealing the breach. This makes quantum communication highly valuable for defence and national security.

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