Quantum Computing: A pathway to quantum logic design

Quantum computing is an emerging technology with the potential to have a significant impact on science and society. Recent advances in mathematics, material science and computer engineering are transforming quantum computing from theory into practice. As quantum computing is an entirely different concept compared to classical computing, it is necessary to develop a new way of thinking to establish the new technologies for the current quantum revolution. This book is an essential resource for students and active researchers where the readers are introduced to quantum computing and quantum logic, fault tolerant quantum computing and quantum dot cellular automata (QCA).

Quantum circuits are the building blocks of a quantum computer, and the design of quantum circuits, including the adder, multiplier, divider, encoder, decoder, barrel shifter, comparator and arithmetic logic units are discussed. Quantum error correction and fault-tolerant quantum computation represent one of the most vital challenges of quantum information processing. Fault tolerant circuits are requited, which will allow the qubits to be protected from quantum errors due to uncontrolled interactions with the environment or imperfect implementations of quantum logical operations. Including designs of fault tolerant quantum circuits such as adder, multiplier and divider, this book provides readers with a clear perspective on the topic.

Quantum dot cellular automata is a new computational paradigm which encodes binary information by charge configuration within a cell instead of the conventional current switches. As there is no current flow, the columbic interaction is sufficient for computation. This revolutionary paradigm provides a possible solution for transistor-less computation at the nano-scale. Through this book readers will acquire knowledge of QCA and the design processes of different quantum circuits using QCA designing software. Coverage also extends to the cost of QCA circuits which includes cell area, delay, kink energy and power.