The Geometry of Single-Qubit Maps

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dc.creatorOi, D. K. L.
dc.date2001-06-06
dc.date.accessioned2026-07-07T06:02:13Z
dc.date.available2026-07-07T06:02:13Z
dc.descriptionThe physically allowed quantum evolutions on a single qubit can be described in terms of their geometry. From a simple parameterisation of unital single-qubit channels, the canonical form of all such channels can be given. The related geometry can be used to understand how to approximate positive maps by completely-positive maps, such as in the case of optimal eavesdropping strategies. These quantum channels can be generated by the appropriate network or through dynamical means. The Strømer-Woronowisc result can also be understood in terms of this geometry.
dc.description10 pages, 8 figures, REVTeX4
dc.identifierhttps://arxiv.org/abs/quant-ph/0106035
dc.identifierhttp://arxiv.org/abs/quant-ph/0106035
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/89527
dc.subjectQuantum Physics
dc.titleThe Geometry of Single-Qubit Maps
dc.typetext

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