Explore the cutting-edge field of photonic hardware neural networks in this 42-minute lecture from the Instituto de Física Interdisciplinar y Sistemas Complejos (IFISC). Delve into the fascinating world of information processing using light-based technologies, discovering how these innovative systems are revolutionizing computational capabilities. Learn about the principles behind photonic neural networks, their advantages over traditional electronic systems, and potential applications in various fields such as artificial intelligence, data processing, and telecommunications. Gain insights into the latest research and developments in this rapidly evolving area of physics and computer science, and understand how photonic hardware neural networks are paving the way for faster, more efficient, and potentially more powerful information processing systems.