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arXiv · 2407.12901

Intensity correlations in the Wigner representation

Mojdeh S. Najafabadi·Luis L. Sánchez-Soto·Kun. Huang·Julien. Laurat·Hanna. Le Jeannic·Gerd. Leuchs
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Abstract

We derive a compact expression for the second-order correlation function $g^{(2)} (0)$ of a quantum state in terms of its Wigner function, thereby establishing a direct link between $g^{(2)} (0)$ and the state's shape in phase space. We conduct an experiment that simultaneously measures $g^{(2)} (0)$ through direct photocounting and reconstructs the Wigner function via homodyne tomography. The results confirm our theoretical predictions.

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Mojdeh S. Najafabadi, Luis L. Sánchez-Soto, Kun. Huang, Julien. Laurat, Hanna. Le Jeannic, Gerd. Leuchs. 2024-07-17. Intensity correlations in the Wigner representation. https://doi.org/10.1098/rsta.2023.0337

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