Lossless Quantum Data Compression and Secure Direct Communication- New concepts and methods for quantum information theory - Softcover

Boström, Kim Joris

Softcover

ISBN 10: 3836446944 ISBN 13: 9783836446945

Publisher: VDM Verlag Dr. Mueller E.K., 2007

Synopsis

Quantum mechanics has radically changed our classical conception of information and communication. The elementary unit of information, the "bit", is replaced by the "qubit" which is a superposition of zero and one. Several qubits can be entangled among each other so that each qubit alone is neither zero nor one, nor any superposition of it. If qubits are used to encode messages then these "quantum messages" do not behave like ordinary ones. They cannot be compressed without loss of information, and the process of reading disturbs their content. Such apparent weaknesses, however, give rise to a revolutionary concept of secure communication... This book reviews the basic concepts of quantum information, develops a theoretical framework for variable-length quantum messages, derives some theorems, and introduces a novel secure communication scheme, the so-called "Ping-Pong protocol", which has attracted some interest in the scientific community and has recently been experimentally realized. The reader should be roughly familiar with probability theory, linear algebra and basic quantum mechanics.

About this title

About the Author

Studied physics in Aachen, Paris, Freiburg and Potsdam, where he made his PhD in theoretical quantum mechanics. At present, Boström is engaged in the field of Neuroscience at the University of Münster.

Edition details

• Publisher: VDM Verlag Dr. Mueller E.K.
• Publication date: 2007
• Language: English
• ISBN 10: 3836446944
• ISBN 13: 9783836446945
• Binding: Paperback
• Number of pages: 144