Negative correlations can play a positive role in disordered quantum walks

Negative correlations can play a positive role in disordered quantum walks

Abstract We investigate the emerging properties of quantum walks with temporal disorder engineered from a binary Markov chain with tailored correlation, C, and disorder strength, r. We show that when the disorder is weak— $$r \ll 1$$ r ≪ 1 —the introduction of negative correlation leads to a counter...

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Autores principales: Marcelo A. Pires, Sílvio M. Duarte Queirós
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
Materias:
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Science
Q
Acceso en línea:https://doaj.org/article/5b8e08b0c85246389368720a16884b0c
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spelling oai:doaj.org-article:5b8e08b0c85246389368720a16884b0c2021-12-02T13:20:14ZNegative correlations can play a positive role in disordered quantum walks10.1038/s41598-021-84073-42045-2322https://doaj.org/article/5b8e08b0c85246389368720a16884b0c2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84073-4https://doaj.org/toc/2045-2322Abstract We investigate the emerging properties of quantum walks with temporal disorder engineered from a binary Markov chain with tailored correlation, C, and disorder strength, r. We show that when the disorder is weak— $$r \ll 1$$ r ≪ 1 —the introduction of negative correlation leads to a counter-intuitive higher production of spin-lattice entanglement entropy, $$S_e$$ S e , than the setting with positive correlation, that is $$S_e(-|C|)>S_e(|C|)$$ S e ( - | C | ) > S e ( | C | ) . These results show that negatively correlated disorder plays a more important role in quantum entanglement than it has been assumed in the literature.Marcelo A. PiresSílvio M. Duarte QueirósNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Marcelo A. Pires
Sílvio M. Duarte Queirós
Negative correlations can play a positive role in disordered quantum walks
description Abstract We investigate the emerging properties of quantum walks with temporal disorder engineered from a binary Markov chain with tailored correlation, C, and disorder strength, r. We show that when the disorder is weak— $$r \ll 1$$ r ≪ 1 —the introduction of negative correlation leads to a counter-intuitive higher production of spin-lattice entanglement entropy, $$S_e$$ S e , than the setting with positive correlation, that is $$S_e(-|C|)>S_e(|C|)$$ S e ( - | C | ) > S e ( | C | ) . These results show that negatively correlated disorder plays a more important role in quantum entanglement than it has been assumed in the literature.
format article
author Marcelo A. Pires
Sílvio M. Duarte Queirós
author_facet Marcelo A. Pires
Sílvio M. Duarte Queirós
author_sort Marcelo A. Pires
title Negative correlations can play a positive role in disordered quantum walks
title_short Negative correlations can play a positive role in disordered quantum walks
title_full Negative correlations can play a positive role in disordered quantum walks
title_fullStr Negative correlations can play a positive role in disordered quantum walks
title_full_unstemmed Negative correlations can play a positive role in disordered quantum walks
title_sort negative correlations can play a positive role in disordered quantum walks
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/5b8e08b0c85246389368720a16884b0c
work_keys_str_mv AT marceloapires negativecorrelationscanplayapositiveroleindisorderedquantumwalks
AT silviomduartequeiros negativecorrelationscanplayapositiveroleindisorderedquantumwalks
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