A unique quasi-probability for projective yes-no measurements

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dc.creatorJohansen, Lars M.
dc.date2008-04-28
dc.date.accessioned2026-07-07T09:35:37Z
dc.date.available2026-07-07T09:35:37Z
dc.descriptionFrom an analysis of projective measurements, it is shown that the Wigner rule is the unique operational quasi-probability for the post-measurement state. A unique pre-measurement quasi-probability is derived from a principle of invariance of measurement disturbance under orthogonal projector complementation. Physical arguments for this principle are given. The informationally complete complex extension of the quasi-probability is also derived. Nonclassicality of this quasi-probability is due to measurement disturbance. The same quasi-probability follows from weak measurements.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/0804.4379
dc.identifierhttp://arxiv.org/abs/0804.4379
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/159886
dc.subjectQuantum Physics
dc.titleA unique quasi-probability for projective yes-no measurements
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