Information theory lies at the heart of modern technology, underpinning all communications, networking, and data storage systems. This book sets out, for the first time, a complete overview of both classical and quantum information theory. Throughout, the reader is introduced to key results without becoming lost in mathematical details. Opening chapters present the basic concepts and various applications of Shannon's entropy, moving on to the core features of quantum information and quantum computing. Topics such as coding, compression, error-correction, cryptography and channel capacity are covered from classical and quantum viewpoints.

信息理论是现代技术的核心，是所有通信、网络和数据存储系统的基础。这本书首次全面概述了经典和量子信息理论。自始至终，读者在不迷失于数学细节的情况下了解了关键结果。第一章介绍香农熵的基本概念和各种应用，接着介绍量子信息和量子计算的核心特征。从经典和量子的角度讨论了编码、压缩、纠错、密码学和信道容量等主题。