A. F. J. Levi is Professor of Electrical Engineering and Physics and Astronomy, and Chair of the Ming Hsieh Department of Electrical and Computer Engineering – Electrophysics, at the University of Southern California. He joined USC after a decade at AT&T Bell Laboratories, Murray Hill, New Jersey, and has over 25 years of experience in teaching applied quantum mechanics for engineers and scientists. He is the inventor of hot electron spectroscopy, discovered ballistic electron transport in transistors, created the first microdisk laser, and carried out groundbreaking work in optimal design of small electronic and photonic systems.