Lecture
This lecture covers the historical development of quantum mechanics and classical information theory, leading to the understanding that information is a physical entity. It explores the early 1980s advancements in quantum physics, focusing on the double slit experiment and interference phenomena. The manipulation of spin by magnetic fields, quantum key distribution, entanglement, and Bell inequalities are discussed, along with the principles of quantum mechanics and the formalization of quantum states. The lecture also delves into the concepts of density matrix, von Neumann entropy, and the application of quantum principles in information processing.