Physical Purification of Quantum States

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dc.creatorKleinmann, M.
dc.creatorKampermann, H.
dc.creatorMeyer, T.
dc.creatorBruss, D.
dc.date2005-09-14
dc.date2006-06-12
dc.date.accessioned2026-07-07T06:43:43Z
dc.date.available2026-07-07T06:43:43Z
dc.descriptionWe introduce the concept of a physical process that purifies a mixed quantum state, taken from a set of states, and investigate the conditions under which such a purification map exists. Here, a purification of a mixed quantum state is a pure state in a higher-dimensional Hilbert space, the reduced density matrix of which is identical to the original state. We characterize all sets of mixed quantum states, for which perfect purification is possible. Surprisingly, some sets of two non-commuting states are among them. Furthermore, we investigate the possibility of performing an imperfect purification.
dc.description5 pages, 1 figure; published version
dc.identifierhttps://arxiv.org/abs/quant-ph/0509100
dc.identifierhttp://arxiv.org/abs/quant-ph/0509100
dc.identifierPhys. Rev. A 73, 062309 (2006)
dc.identifierdoi:10.1103/PhysRevA.73.062309
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102525
dc.subjectQuantum Physics
dc.titlePhysical Purification of Quantum States
dc.typetext

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