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Título

Information encoding of a qubit into a multilevel environment

AutorPérez Cañellas, Armando
Fecha de publicación20-may-2010
EditorAmerican Physical Society
CitaciónPhysical Review - Section A - Atomic Molecular and Optical Physics 81 (5): 052326 (2010)
ResumenI consider the interaction of a small quantum system (a qubit) with a structured environment consisting of many levels. The qubit will experience a decoherence process, which implies that part of its initial information will be encoded into correlations between system and environment. I investigate how this information is distributed on a given subset of levels as a function of its size, using the mutual information between both entities, in the spirit of the partial-information plots studied by Zurek and co-workers. In this case we can observe some differences, which arise from the fact that I am partitioning just one quantum system and not a collection of them. However, some similar features, like redundancy (in the sense that a given amount of information is shared by many subsets), which increases with the size of the environment, are also found here.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevA.81.052326
URIhttp://hdl.handle.net/10261/26472
DOI10.1103/PhysRevA.81.052326
ISSN1050-2947
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