Q. Scientists from the Defence Research and Development Organisation (DRDO) and which of the following institute, successfully demonstrated a Quantum Key Distribution (QKD) link for a distance of 100 Km?

[A] IIT Delhi

[B] IIT Kanpur

[C] IIT Madras

[D] IIT Guwahati

Answer: A
Notes:

Explanation: Scientists from the Defence Research and Development Organisation (DRDO) and IIT Delhi successfully demonstrated a Quantum Key Distribution (QKD) link for a distance of 100 Km between Prayagraj and Vindhyachal in Uttar Pradesh.

  • It is a secure communication technology that uses quantum physics to construct a cryptographic protocol.
  • It allows two parties to generate a shared secret key that is only known to them and can be used to encrypt and decrypt messages, thus achieving a very highly secure communication.
  • In traditional cryptography, the security is usually based on the fact that an adversary is unable to solve a certain mathematical problem while in QKD, security is achieved through the laws of quantum physics.

Source: FORUMIAS