Quantum computing is an emerging technology with the potential to have a significant impact on science and technology. Quantum computers consume significantly less energy, and this could lead to lower costs and decrease fossil fuel dependency; quantum computing therefore plays a vital role in developing compact and low-power consumption computers. Recently, advances in mathematics, material science, and computer engineering have transformed the computing machines to quantum computing from theory to practice.

Organised into four parts, this comprehensive second edition covers topics such as the basic concepts of quantum computing alongside quantum implementation of different circuits; the fault tolerant concepts of quantum computing; the concept of QCA alongside the design processes of different QCA circuits; and an overview of QCA fault-tolerant circuits and their design procedures. In addition to updates to first edition chapters to reflect developments in recent years, this new edition sees the inclusion of problems to every chapter and eight new chapters.

With there being very few resources on quantum computing, this book will be a great help for quantum computing researchers, faculty members and students who can develop a working understanding of circuit-based quantum computing.