The combination of two of the twentieth century's most influential and                  revolutionary scientific theories, information theory and quantum mechanics, gave                  rise to a radically new view of computing and information. Quantum information                  processing explores the implications of using quantum mechanics instead of classical                  mechanics to model information and its processing. Quantum computing is not about                  changing the physical substrate on which computation is done from classical to                  quantum but about changing the notion of computation itself, at the most basic                  level. The fundamental unit of computation is no longer the bit but the quantum bit                  or qubit. This comprehensive introduction to the field offers a thorough exposition                  of quantum computing and the underlying concepts of quantum physics, explaining all                  the relevant mathematics and offering numerous examples. With its careful                  development of concepts and thorough explanations, the book makes quantum computing                  accessible to students and professionals in mathematics, computer science, and                  engineering. A reader with no prior knowledge of quantum physics (but with                  sufficient knowledge of linear algebra) will be able to gain a fluent understanding                  by working through the book. The text covers the basic building blocks of quantum                  information processing, quantum bits and quantum gates, showing their relationship                  to the key quantum concepts of quantum measurement, quantum state transformation,                  and entanglement between quantum subsystems; it treats quantum algorithms,                  discussing notions of complexity and describing a number of simple algorithms as                  well as the most significant algorithms to date; and it explores entanglement and                  robust quantum computation, investigating such topics as quantifying entanglement,                  decoherence, quantum error correction, and fault tolerance.

Quantum Computing: A Gentle Introduction PDF

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