Book excerpt: This is a comprehensive description of the principles, algorithms, design technology, quantum machine learning and quantum physics in quantum computing and communications. Unifying several disciplines in the field, especially computing and communication, the book also covers computing and artificial intelligence (quantum machine learning), quantum cyber security, quantum circuit design, and relative quantum physics phenomena. Based on the latest results in the field, enabling the reader/researcher to understand these interrelations of a complex system in practice, the book moves from introductory to advanced level, step by step, providing a self-contained text. Undergraduate and postgraduate students will find several DESIGN EXAMPLES to replace the classical concept of using “problems and solutions” addendums at the end of the chapters/book. This enables offering more sophisticated assignments for the teamwork of the students. This is a stand-alone volume, and onward reading is available in Volume 2 Quantum Vs Post Quantum Security/Algorithms and Design Technology. Topics covered in Volume 1 include: Visible Light Communication; Terahertz Communications; Optical Wireless Communications; Quantum Key Distribution over THz band; Deep Neural Networks; Quantum Network Routing and Technology Design; Quantum Machine Learning; and more.