In a joint team of scientists from the Defence Research and Development Organisation (DRDO) and Indian Institute of Technology (IIT) Delhi successfully demonstrated Quantum Key Distribution (QKD) link between Prayagraj and Vindhyachal in Uttar Pradesh, a distance of more than 100 kilometres.

More about QKD

  1. QKD is primarily a mechanism to undertake secure communication which utilises a cryptographic protocol involving various components of quantum mechanics.
  2. The technology enables two communicating sides to come up with random secret keys shared by both of them and known exclusively to them, so only they can use it to encrypt and decrypt messages, thus achieving a very highly-secure communication.
  3. In December 2020, the technology was tested for communication between two DRDO facilities in Hyderabad—the Defence Research and Development Laboratory (DRDL) and Research Centre Imarat (RCI)—over a distance of 12 km.
  4. This technological breakthrough was achieved over a commercial-grade optical fibre already available in the field.
  5. With this success, the country has demonstrated indigenous technology of secure key transfer for bootstrapping military-grade communication security key hierarchy.
  6. The performance parameters have been measured and have been found to be repetitively within the reported international standards at sifted key rates of up to 10 kHz.
  7. This technology will enable security agencies to plan a suitable quantum communication network with indigenous technology backbone.