Non-commutativity measure of quantum discord

Quantum discord is a manifestation of quantum correlations due to non-commutativity rather than entanglement. Two measures of quantum discord by the amount of non-commutativity via the trace norm and the Hilbert-Schmidt norm respectively are proposed in this paper. These two measures can be calculat...

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Autor principal: Guo, Yu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4848517/
https://www.ncbi.nlm.nih.gov/pubmed/27122226
http://dx.doi.org/10.1038/srep25241
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author Guo, Yu
author_facet Guo, Yu
author_sort Guo, Yu
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description Quantum discord is a manifestation of quantum correlations due to non-commutativity rather than entanglement. Two measures of quantum discord by the amount of non-commutativity via the trace norm and the Hilbert-Schmidt norm respectively are proposed in this paper. These two measures can be calculated easily for any state with arbitrary dimension. It is shown by several examples that these measures can reflect the amount of the original quantum discord.
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spelling pubmed-48485172016-05-05 Non-commutativity measure of quantum discord Guo, Yu Sci Rep Article Quantum discord is a manifestation of quantum correlations due to non-commutativity rather than entanglement. Two measures of quantum discord by the amount of non-commutativity via the trace norm and the Hilbert-Schmidt norm respectively are proposed in this paper. These two measures can be calculated easily for any state with arbitrary dimension. It is shown by several examples that these measures can reflect the amount of the original quantum discord. Nature Publishing Group 2016-04-28 /pmc/articles/PMC4848517/ /pubmed/27122226 http://dx.doi.org/10.1038/srep25241 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Guo, Yu
Non-commutativity measure of quantum discord
title Non-commutativity measure of quantum discord
title_full Non-commutativity measure of quantum discord
title_fullStr Non-commutativity measure of quantum discord
title_full_unstemmed Non-commutativity measure of quantum discord
title_short Non-commutativity measure of quantum discord
title_sort non-commutativity measure of quantum discord
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4848517/
https://www.ncbi.nlm.nih.gov/pubmed/27122226
http://dx.doi.org/10.1038/srep25241
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