Quantum Key Distribution

What You’ll Learn

1. 1

   The core principle behind QKD: why eavesdropping is physically detectable, not just computationally hard

2. 2

   BB84 and other foundational QKD protocols, explained without requiring a physics background

3. 3

   Real deployed QKD networks in Beijing, Shanghai, and London, and what they reveal about practical limitations

4. 4

   Satellite-based QKD systems and their extended range

5. 5

   How QKD and post-quantum cryptography (PQC) complement rather than compete with each other

6. 6

   Current cost, distance, and infrastructure constraints holding back wider deployment

7. 7

   Evaluating whether QKD is relevant to your organization today or a later-stage consideration