Estimation of photon counting statistics with imperfect detectors

• 来源期刊: 中国物理B（英文版）
• 关键词: fidelity on/off detector photon number detection relative entropy
• 年，卷（期）: 2018,（7）
• 页码范围: 398-404
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/7/074208

摘要

The study on photon counting statistics is of fundamental importance in quantum optics. We theoretically analyzed the imperfect detection of an arbitrary quantum state. We derived photon counting formulae for six typical quantum states (i.e., Fock, coherent, squeeze-vacuum, thermal, odd and even coherent states) with finite quantum efficiencies and dark counts based on multiple on/off detector arrays. We applied the formulae to the simulation of multiphoton number detections and obtained both the simulated and ideal photon number distributions of each state. A comparison between the results by using the fidelity and relative entropy was carried out to evaluate the detection scheme and help select detectors for different quantum states.