Damping Law of Photocount Distribution in a Dissipative Channel

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2013,（9）
• 页码范围: 22-24
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/30/9/090304

摘要

For a dissipative channel governed by the master equation of the density operator describing the photon loss,we find that the photocount distribution formula at time t can be related to the initial photocount distribution by replacing the efficiency of the detector ξ with ξe-kt,as if the quantum efficiency ξ of the detector becomes ξe-2kt.This law greatly simplifies the theoretical study of the photocount distribution for quantum optical fields.