脉冲量子光的密度矩阵
Density Matrices of Pulsed Quantum Light
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中文总结 AI 辅助
本文通过密度矩阵统一描述脉冲量子光，证明有限探测时间下测量等效性，揭示腔长物理意义及光谱起源，并推广至高斯态以关联计数率与光谱。
中文摘要 AI 辅助
脉冲光由密度矩阵表示，其相关函数具有不同的平稳性和相干性属性。我们证明，在考虑有限探测时间后，这些密度矩阵产生等效的测量结果。这进而揭示了量子化腔长度的物理意义，并解释了脉冲光物理光谱的起源。通过推广脉冲高斯光态的密度矩阵，我们能够在同一基底下描述具有不同统计特性的脉冲光，并将光子计数率与脉冲光谱联系起来。
英文摘要
Pulsed light is represented by density matrices whose correlation functions have different properties of stationarity and coherence. We show that these density matrices yield equivalent measurement results after accounting for finite detection times. This in turn reveals a physical meaning to the length of a quantization cavity and explains the origin of the physical spectrum for pulsed light. By generalizing the density matrices for pulsed Gaussian states of light, we can describe pulsed light of varying statistics in the same basis and relate the photocount rate to the pulse spectrum.
发表机构
- Department of Physics, University of Toronto（多伦多大学物理系）
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