What is Quantum Cryptography?

Explore the world of quantum cryptography in this 55-minute lecture by Dr. Oliver Reardon-Smith from Centrum Fizyki Teoretycznej PAN. Begin with an introduction to Shor's algorithm for prime factoring and its potential threat to RSA encryption, widely used in banking and online transactions. Delve into two fundamental quantum cryptographic protocols: BB84 and E91. Examine recent advancements in the field of quantum cryptography and, time permitting, discover the progress made in quantum internet modules across cities worldwide and space-based quantum communication. This talk, part of the 27th Science Festival at CFT PAN on September 24, 2023, offers a comprehensive overview of quantum cryptography's past, present, and future implications for secure communication.