Quantum Key Distribution (QKD) using BB84 Protocol

Welcome! In this video, we’ll explore Quantum Key Distribution, with a focus on the BB84 protocol — one of the most important milestones in quantum cryptography. You’ll learn how QKD enables two parties to securely share a secret key using the laws of quantum mechanics. We’ll walk through the key steps of the BB84 protocol, explain how eavesdropping can be detected, and show how a secure key is established — using principles that remain secure even against future attacks from quantum computer.