Symmetric measurements attaining the accessible information

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dc.creatorDecker, Thomas
dc.date2005-09-19
dc.date.accessioned2026-07-07T06:18:15Z
dc.date.available2026-07-07T06:18:15Z
dc.descriptionA theorem of Davies states that for symmetric quantum states there exists a symmetric POVM maximizing the mutual information. To apply this theorem the representation of the symmetry group has to be irreducible. We obtain a similar yet weaker result for reducible representations. We apply our results to the double trines ensemble and show numerically that for this ensemble the pretty good measurement is optimal.
dc.description21 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0509122
dc.identifierhttp://arxiv.org/abs/quant-ph/0509122
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/94674
dc.subjectQuantum Physics
dc.titleSymmetric measurements attaining the accessible information
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