Wigner function negativity in a classical model of quantum light

• URL: http://arxiv.org/abs/2512.13462v1
• Date: Mon, 15 Dec 2025 16:00:04 GMT
• Title: Wigner function negativity in a classical model of quantum light
• Authors: Brian R. La Cour,
• Abstract summary: We show a classical model of squeezed light that is capable of reproducing observed behavior of single-photon added coherent states.<n>The resulting Wigner functions exhibit negatively for photon-added vacuum and weak coherent states.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The presence of negative values in the Wigner quasiprobability distribution is deemed one of the hallmarks of nonclassical phenomena in quantum systems. Here we demonstrate a classical model of squeezed light that, when combined with post-selection on amplitude threshold-crossing detection events, is capable of reproducing observed behavior of single-photon added coherent states. In particular, a classical model of balanced homodyne detection and standard tomographic techniques are used to infer the density matrix in the Fock basis. The resulting Wigner functions exhibit negatively for photon-added vacuum and weak coherent states.

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