TL;DR
This paper provides a concise overview of classical and quantum information theory, covering key concepts like entropy, relative entropy, and mutual information, with some detailed quantum topics.
Contribution
It offers a brief, accessible introduction to fundamental and advanced topics in classical and quantum information theory.
Findings
Explains classical Shannon entropy and quantum von Neumann entropy.
Describes properties of relative entropy, conditional entropy, and mutual information.
Includes some detailed quantum information concepts.
Abstract
This article consists of a very short introduction to classical and quantum information theory. Basic properties of the classical Shannon entropy and the quantum von Neumann entropy are described, along with related concepts such as classical and quantum relative entropy, conditional entropy, and mutual information. A few more detailed topics are considered in the quantum case.
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