We derive a compact expression for the second-order correlation function [Formula: see text] of a quantum state in terms of its Wigner function, thereby establishing a direct link between [Formula: see text] and the state's shape in phase space. We conduct an experiment that simultaneously measures [Formula: see text] through direct photocounting and reconstructs the Wigner function via homodyne tomography. The results confirm our theoretical predictions.This article is part of the theme issue 'The quantum theory of light'.
No takes yet. Share an insight, caveat, or question.
Najafabadi et al. (2024) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: