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Trapped Ion Quantum Computing
Wigner function negativity in a classical model of quantum light
arXiv
Authors: Brian R. La Cour
Year
2025
Paper ID
36519
Status
Preprint
Abstract Read
~2 min
Abstract Words
89
Citations
N/A
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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- This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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- The presence of negative values in the Wigner quasiprobability distribution is deemed one of the hallmarks of nonclassical phenomena in quantum systems.
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