An introductory textbook for advanced students of physics, chemistry and computer science, covering an area of physics that has lately witnessed rapid expansion. The topics treated here include quantum information, quantum communication, quantum computing, teleportation and hidden parameters, thus imparting not only a well-founded understanding of quantum theory as such, but also a solid basis of knowledge from which readers can follow the rapid development of the topic or delve deeper into a more specialized branch of research. Commented recommendations for further reading as well as end-of-chapter problems help the reader to quickly access the theoretical basics of future key technologies.
Tabella dei contenuti
1. The Mathematical Framework
2. Basic Concepts of Quantum Theory
3. The Simplest Quantum Systems: Qubits
4. Mixed State and Density Operator
5. Shannon’s Entropy and Classical Information
6. The von Neumann Entropy and Quantum Information
7. Composite Systems
8. Entanglement
9. Correlations and Non-Local Measurements
10. There is no (Local-Realistic) Alternative to the Quantum Theory
11. Working with Entanglement
12. The Quantum Computer
13. General Measurements, POVM
14. The General Evolution of an Open Qauntum System and Special Quantum Channels
15. Decoherence and Approaches to the Description of the Quantum Measurement Process
16. Two Implementations of Quantum Operations
Circa l’autore
Jürgen Audretsch studied physics at the Universities of Tübingen and Freiburg, Germany. In 1980, he was appointed to a professorship in theoretical physics at the University of Konstanz, Germany, where he still teaches. While putting a focus on research in general relativity and the quantum field theory in the past, he now concentrates on quantum optics and the quantum information theory. Professor Audretsch has published numerous articles in scientific journals and edited books. He is also the author of several popular science books.
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