Economical realization of phase covariant devices in arbitrary dimensions

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dc.creatorBuscemi, Francesco
dc.creatorD'Ariano, Giacomo Mauro
dc.creatorMacchiavello, Chiara
dc.date2006-06-14
dc.date.accessioned2026-07-07T07:46:25Z
dc.date.available2026-07-07T07:46:25Z
dc.descriptionWe describe a unified framework of phase covariant multi user quantum transformations for d-dimensional quantum systems. We derive the optimal phase covariant cloning and transposition tranformations for multi phase states. We show that for some particular relations between the input and output number of copies they correspond to economical tranformations, which can be achieved without the need of auxiliary systems. We prove a relation between the optimal phase covariant cloning and transposition maps, and optimal estimation of multiple phases for equatorial states.
dc.description18 pages, 1 fugure. This paper reviews and completes quant-ph/0407103 and quant-ph/0504016
dc.identifierhttps://arxiv.org/abs/quant-ph/0606120
dc.identifierhttp://arxiv.org/abs/quant-ph/0606120
dc.identifierJ. Opt. Soc. Am. B 24, 363 (2007)
dc.identifierdoi:10.1364/JOSAB.24.000363
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/123823
dc.subjectQuantum Physics
dc.titleEconomical realization of phase covariant devices in arbitrary dimensions
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