Where Does QKD Fit in a Post-quantum Secure World?

Quantum Key Distribution or QKD is the much-heralded first fruit of the upcoming quantum revolution, which promises more accurate timing, more secure communications, more sensitive imaging and sensing, and of course more power computing. QKD has the potential to offer ultra-secure communications, but there are several other, more cost-effective options. The talk will assess the landscape pragmatically, presenting recent customer trials of both QKD and post-quantum crypto solutions. The major QKD use cases being explored in the AIRQKD collaborative project will be described and innovative Physically Unclonable Function (PUF) technology will be applied where relevant to supplement QKD in access environments.