Quasiprobabilities from incomplete and overcomplete measurements

• URL: http://arxiv.org/abs/2511.04274v1
• Date: Thu, 06 Nov 2025 11:09:37 GMT
• Title: Quasiprobabilities from incomplete and overcomplete measurements
• Authors: Jan Sperling, Laura Ares, Elizabeth Agudelo,
• Abstract summary: We discuss the (re-)construction of quasiprobability representations from generic measurements, including noisy ones.<n>A practical concern that we address is the treatment of informationally incomplete and overcomplete measurement scenarios.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We discuss the (re-)construction of quasiprobability representations from generic measurements, including noisy ones. Based on the measurement under study, quasiprobabilities and the associated concept of nonclassicality are introduced. A practical concern that we address is the treatment of informationally incomplete and overcomplete measurement scenarios, which can significantly alter the assessment of which states are deemed classical. Notions, such as Kirkwood-Dirac quasiprobabilities and s-parametrized quasiprobabilities in quantum optics, are generalized by our approach. Single-qubit systems are used to exemplify and to compare different measurement schemes, together with the resulting quasiprobabilities and set of nonclassical states.

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