Companion to Quantum Computing and Communication by Mladen Pavičić ISBN 9783527408481, 3527408487 instant download

Companion to Quantum Computing and Communication by Mladen Pavičić ISBN 9783527408481, 3527408487 instant download

From the Foreword by Lev Levitin: A new book by Prof. M. Pavicic's: "Companion to Quantum Computation and Quan­tumCommunication" offers to us a well-written and easily readable introduction into a versicolor plethora of a broad field that can be summarily called quantum information science. The quantum realm opens a plenty of new amazing capabilities to us, unheard of in the classical world, from perfectly secure communication, to quantum teleportation and "superdense" coding, to the most dazzling and promising one - an exponential speed-up of com­putational algorithms. Pavicic's "Companion" elegantly introduces the reader into this fascinating treasure house. Researchers in the quantum information area have been keen in exploring new situations and asking new questions which physicists were not interested in or did not want to ask before. The new understanding of the Second Law of thermodynamics; the relationship between information and work; the concept of indirect (POVM) measurements, as a broad generalization of direct (von Neumann) measurements; the role of entanglement, one of the most enigmatic quantum phenomena and a pow­erful computational tool; the "weirdness" of the quantum world, reflected in the no-cloning, no-deleting, no-broadcast theorems - those are just a few examples of a deeper understanding of the quantum paradigm that has been brought up by quantum information science. A remarkable feature of this development is that every progress in theory has been immediately followed by experimentalists, which has led to startling advances in precision and sophistication of physical experimentation. Pavicic takes a lot of care to present and explain experimental approaches and possible technological im­plementations of information systems based on quantum-mechanical principles. In general, Pavicic's book can be called "Quantum Information for Pedestrians".