Quantum Computing Architecture and Hardware for Engineers

This book aims to provide an engineering-oriented understanding of quantum computer architecture and hardware. Recognizing that many electrical, electronics, and computer engineering students and professionals lack extensive backgrounds in quantum physics and mathematics, the author adopts a step-by-step approach to connect fundamental physical and mathematical concepts with the principles of quantum hardware design and implementation. The opening chapters introduce the essential linear algebra and quantum mechanics required to understand quantum states, operators, matrices, quantum gates, and measurement. The central part of the book focuses on two important technologies for building quantum processors: spin qubits and superconducting qubits. By explaining the physical principles underlying these systems, the author examines how their quantum properties are connected to hardware components and electronic circuits. Topics such as the quantum harmonic oscillator, LC circuits, superconductivity, Josephson junctions, and the principles of controlling and manipulating quantum states provide the foundation for a deeper understanding of the physical structure of quantum processors. A distinctive feature of this book is its continuous integration of physics, mathematics, and microwave engineering. The material is presented through step-by-step examples, simulation codes, and superconducting quantum chip design examples. The five DiVincenzo criteria are also used as a framework for examining the requirements of building a practical quantum computer. This approach enables readers to move beyond the theoretical understanding of qubits and become familiar with the technical requirements, limitations, and engineering considerations involved in designing and developing quantum computing hardware.