The knowledge and thus characterization of the temporal modes of quantum light fields is important in many areas of quantum physics ranging from experimental setup diagnosis to fundamental-physics investigations. Recent results showed how the auto-correlation function computed from continuous-wave homodyne measurements can be a powerful way to access the temporal mode structure. Here, we push forward this method by providing a deeper understanding and by showing how to extract the amplitude and phase of the temporal mode function with reduced experimental resources. Moreover, a quantitative analysis allows us to identify a regime of parameters where the method provides a trustworthy reconstruction, which we illustrate experimentally.
@article{arxiv.1909.00859,
title = {Accurate photonic temporal mode analysis with reduced resources},
author = {O. Morin and S. Langenfeld and M. Körber and G. Rempe},
journal= {arXiv preprint arXiv:1909.00859},
year = {2020}
}