The Holevo capacity of a generalized amplitude-damping channel

• 来源期刊: 中国物理（英文版）
• 关键词: the Holevo capacity generalized amplitude-damping channel channel parameters
• 年，卷（期）: 2007,（7）
• 页码范围: 1843-1847
• 页数: 5页
• 语种: 英文

摘要

The Holevo capacity of a generalized amplitude-damping channel is investigated by using a numerical method.It is shown that the Holevo capacity depends on the channel parameters representing the ambient temperature and fidelity. In particular, under a special condition, the Holevo capacity of the generalized amplitude-damping channel can be written as an analytical expression.