Summary
The experiment was a joint effort by Quantum Networks Labs, the Bhaskaracharya National Institute for Space Applications and Geo‑informatics, and the Indian Institute of Technology Gandhinagar.
Using a pointing, acquisition and tracking system, the team kept the optical beam stable and achieved a quantum bit error rate below five percent.
Secure keys were generated at a rate of 230 to 260 bits per second and were combined with the Vedic Kavach post‑quantum cryptography platform for end‑to‑end encryption and decryption.
The dual‑layer approach, mixing hardware‑based quantum communication with software‑based post‑quantum protection, demonstrates a practical path toward larger quantum‑secure networks, including future satellite links.