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Free-Space Quantum Communication Demonstrated by ISRO

Published on March 24, 2021
Current Context: The Indian Space Research Organisation (ISRO) has successfully demonstrated its Free-Space Quantum Communication over a distance of 300 meters.
Free-Space Quantum Communication Demonstrated by ISRO
  • The demonstration took place at the Space Applications Centre (SAC) in Ahmedabad in between the two line-of-sight buildings within its campus.
  • The demonstration was conducted at the night to avoid interference from direct sunlight.
  • The experts performed a demonstration using quantum-key-encrypted signals.
  • As per ISRO, this is thus the major achievement for unconditionally secured satellite data communication using quantum technologies.
  • The space quantum communication is comprised of NAVIC receiver for the time synchronisation in between the transmitter and receiver modules, gimbal mechanism system to have an optical alignment.
  • Also, the Quantum Key Distribution technology uses the Quantum Communication technology which grants data security.
  • Static Part: 
    • HQ of ISRO: Bengaluru
    • Chairman of ISRO: K. Sivan

Question: 

Q.1 The ISRO demonstrated its Free-Space Quantum Communication over a distance of ___ meters?
a. 350 meters
b. 300 meters
c. 270 meters
d. 330 meters
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