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Updated: May 8, 2025

Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method
Published on: September 3, 2021
Intensity correlations in the Wigner representation
Mojdeh Shikhali Najafabadi1, Luis L Sanchez-Soto1,2, Kun Huang3
1Max-Planck-Institut für die Physik des Lichts, Erlangen 91058, Germany.
Abstract:
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'.
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