Extremal covariant quantum operations and POVM's

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dc.creatorD'Ariano, Giacomo Mauro
dc.date2003-10-03
dc.date2004-05-31
dc.date.accessioned2026-07-07T06:22:09Z
dc.date.available2026-07-07T06:22:09Z
dc.descriptionWe consider the convex sets of QO's (quantum operations) and POVM's (positive operator valued measures) which are covariant under a general finite-dimensional unitary representation of a group. We derive necessary and sufficient conditions for extremality, and give general bounds for ranks of the extremal POVM's and QO's. Results are illustrated on the basis of simple examples.
dc.description18 pages, to appear on J. Math. Phys
dc.identifierhttps://arxiv.org/abs/quant-ph/0310024
dc.identifierhttp://arxiv.org/abs/quant-ph/0310024
dc.identifierJ. Math. Phys. 45 3620-3635 (2004)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/95826
dc.subjectQuantum Physics
dc.titleExtremal covariant quantum operations and POVM's
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