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Negative correlations can play a positive role in disordered quantum walks

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—[Formula: see text] —the introduction of negative correlation leads to a counter-intuiti...

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Detalles Bibliográficos
Autores principales: Pires, Marcelo A., Duarte Queirós, Sílvio M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7907284/
https://www.ncbi.nlm.nih.gov/pubmed/33633266
http://dx.doi.org/10.1038/s41598-021-84073-4
Descripción
Sumario: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—[Formula: see text] —the introduction of negative correlation leads to a counter-intuitive higher production of spin-lattice entanglement entropy, [Formula: see text] , than the setting with positive correlation, that is [Formula: see text] . These results show that negatively correlated disorder plays a more important role in quantum entanglement than it has been assumed in the literature.