New approach for deriving density operator for describing continuum photodetection process

• 来源期刊: 中国物理B（英文版）
• 关键词: photodetection entangled state representation density operator
• 年，卷（期）: 2009,（3）
• 页码范围: 1061-1064
• 页数: 4页
• 语种: 英文

摘要

By introducing the two-mode entangled state representation <η│ whose one mode is a fictitious one accompa-nying the system mode, this paper presents a new approach for deriving density operator for describing continuum photodetection process.