Quantum Electronics by Medhat Ullah is a comprehensive guide to the principles, technologies, and applications of quantum electronic systems. Designed for advanced undergraduate, graduate students, and researchers, this book bridges the gap between classical electronics and the emerging frontier of quantum devices. It provides a clear and systematic introduction to the theory and practical implementation of superconducting circuits, quantum tunneling, Josephson junctions, and quantum coherence, emphasizing both foundational concepts and modern experimental techniques. Through detailed explanations, mathematical rigor, and illustrative diagrams, readers will gain a deep understanding of quantum behavior in electronic systems, spintronics, and cutting-edge quantum computing components. Beyond theory, the book explores real-world applications in quantum information processing, quantum communication, and nanoscale device engineering. Whether you are a student seeking a solid foundation or an engineer aiming to explore the next generation of electronics, Quantum Electronics offers a structured, insightful, and practical approach to mastering one of the most transformative fields in modern science.