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Necessary and sufficient conditions on measurements of quantum channels

Quantum supermaps are a higher-order genera- lization of quantum maps, taking quantum maps to quantum maps. It is known that any completely positive and trace non-increasing (CPTNI) map can be performed as part of a quantum measurement. By providing an explicit counterexample we show that, instead,...

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Detalhes bibliográficos
Publicado no:Proc Math Phys Eng Sci
Main Authors: Burniston, John, Grabowecky, Michael, Scandolo, Carlo Maria, Chiribella, Giulio, Gour, Gilad
Formato: Artigo
Idioma:Inglês
Publicado em: The Royal Society Publishing 2020
Assuntos:
Acesso em linha:https://ncbi.nlm.nih.gov/pmc/articles/PMC7209144/
https://ncbi.nlm.nih.gov/pubmed/32398940
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1098/rspa.2019.0832
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