Sharp continuity bounds for entropy and conditional entropy

• 来源期刊: 中国科学:物理学 力学 天文学（英文版）
• 年，卷（期）: 2017,（2）
• 页码范围: 64-68
• 页数: 5页
• 语种: 中文
• DOI: 10.1007/s11433-016-0367-x

摘要

The von Neumann entropy captures many operational quantities in the quantum information theory such as quantum capacity of the communication channel.Von Neumann entropy is continuous and is represented by Fannes inequality,which was originally given in ref.[1].Quantum correlations such as entanglement and quantum discord etc.,are important resources in quantum information processing.