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Tomographic reconstruction of quantum metrics
Dipartimento di Fisica 'E. Pancini' Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, via Cintia, 80126 Naples, Italy.ORCID iD: 0000-0003-2153-9630
Dipartimento di Fisica 'E. Pancini' Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, via Cintia, 80126 Naples, Italy; INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, via Cintia, 80126 Naples, Italy.
Dipartimento di Fisica 'E. Pancini' Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, via Cintia, 80126 Naples, Italy.
Dipartimento di Fisica 'E. Pancini' Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, via Cintia, 80126 Naples, Italy; INFN, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, via Cintia, 80126 Naples, Italy.
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2018 (English)In: Journal of Physics A: Mathematical and Theoretical, ISSN 1751-8113, E-ISSN 1751-8121, Vol. 51, no 5, article id 055302Article in journal (Refereed) Published
Abstract [en]

In the framework of quantum information geometry we investigate the relationship between monotone metric tensors uniquely defined on the space of quantum tomograms, once the tomographic scheme is chosen, and monotone quantum metrics on the space of quantum states, classified by operator monotone functions, according to the Petz classification theorem. We show that different metrics can be related through a change in the tomographic map and prove that there exists a bijective relation between monotone quantum metrics associated with different operator monotone functions. Such a bijective relation is uniquely defined in terms of solutions of a first order second degree differential equation for the parameters of the involved tomographic maps. We first exhibit an example of a non-linear tomographic map that connects a monotone metric with a new one, which is not monotone. Then we provide a second example where two monotone metrics are uniquely related through their tomographic parameters.

Place, publisher, year, edition, pages
IOP Publishing , 2018. Vol. 51, no 5, article id 055302
National Category
Mathematical Analysis
Identifiers
URN: urn:nbn:se:kth:diva-358069DOI: 10.1088/1751-8121/aa9e61ISI: 000419366900001Scopus ID: 2-s2.0-85040373376OAI: oai:DiVA.org:kth-358069DiVA, id: diva2:1924489
Note

QC 20250117

Available from: 2025-01-06 Created: 2025-01-06 Last updated: 2025-01-17Bibliographically approved

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Laudato, Marco

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