Explore the fascinating world of quantum cryptography beyond Quantum Key Distribution (QKD) in this comprehensive lecture by Chris Schaffner from the University of Amsterdam and QuSoft. Delve into the intricate relationship between lattices, algorithms, complexity, and cryptography as part of the "Quantum Cryptography for Dummies" series. Gain insights into advanced concepts and applications of quantum cryptography, understanding its potential impact on future security systems and communication networks.