Lossless Quantum Data Compression and Secure Direct Communication: New Concepts and Methods for Quantum Information Theory - Brossura

Bostrom, Kim Joris

Brossura

ISBN 10: 3836446944 ISBN 13: 9783836446945

Casa editrice: Vdm Verlag Dr Mueller E K, 2007

Riassunto

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.

Dettagli dell'edizione

• Editore: Vdm Verlag Dr Mueller E K
• Data di pubblicazione: 2007
• Lingua: Inglese
• ISBN 10: 3836446944
• ISBN 13: 9783836446945
• Rilegatura: Copertina flessibile
• Numero di pagine: 128
• Contatto del produttore: non disponibile
• Persona responsabile: non disponibile