A single photon occupying a bimode encodes a qubit, facilitating cryptographic protocols for secure communication. When occupying two bimodes, a photon encodes two qubits, enabling local gates. A photon distributed across spatial modes encodes an image. Entangled photon pairs form two qubits, enabling quantum-state teleportation and quantum networks. Additionally, two photons with spatiotemporal modal entanglement form a biphoton, useful for quantum sensing and imaging with sensitivity surpassing classical limits.
With numerous illustrations, examples, and exercises, the book is ideal for classroom teaching or self-study at the upper-level undergraduate or beginning graduate level. It also serves as an accessible introduction for readers interested in the foundational principles driving the second quantum revolution and its diverse applications in communication, computing, and metrology.
Bahaa E. A. Saleh, PhD, is University Distinguished Professor Emeritus at CREOL, The College of Optics and Photonics at the University of Central Florida, where he served as Dean during the period 2009–2019. He is also Professor Emeritus at Boston University. Saleh is the author of Photoelectron Statistics, Fundamentals of Photonics (with M. C. Teich), and Introduction to Subsurface Imaging, and is the Founding Editor of Advances in Optics and Photonics. He is a Fellow of APS, IEEE, OPTICA, SPIE, Guggenheim Foundation, and CAS-PIFI. He is the recipient of the OSA Beller Medal, OSA Mees Medal, OSA Distinguished Service Award, SPIE BACUS Award, and the Kuwait Prize.