Course 9 - Quantum Entropy and Quantum Information

摘要: The chapter provides a short introduction to some of the basic concepts and tools Classical Information Theory. A brief discussion data compression, transmission through noisy channels, Shannon's theorems, Shannon entropy channel capacity are given. quantum part commences with open systems how they necessitate generalization postulates Quantum Mechanics. Topics include states, generalized measurements, Kraus Representation Theorem, Schmidt decomposition, purification. This gives an concept entanglement its usefulness as resource in follows study analogue entropy— namely, von Neumann entropy. Its properties interpretation compression limit information source discussed. Schumacher's theorem on for memoryless sources discussed detail. It shows developed Statistical Physics, employed find class memory. Some examples channels given different capacities brief.