| Texto completo | |
| Autor(es): |
Neto, Alaor Cervati
;
Karpat, Goktug
;
Fanchini, Felipe Fernandes
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW A; v. 94, n. 3, p. 6-pg., 2016-09-06. |
| Resumo | |
We conclusively show that the entanglement- and the mutual-information-based measures of quantum non-Markovianity are inequivalent. To this aim, we first analytically solve the optimization problem in the definition of the entanglement-based measure for a two-level system. We demonstrate that the optimal initial bipartite state of the open system and the ancillary is always given by one of the Bell states for any one-qubit dynamics. On top of this result, we present an explicit example dynamics where memory effects emerge according to the mutual-information-based measure, even though the time evolution remains memoryless with respect to the entanglement- based measure. Finally, we explain this disagreement between the two measures in terms of the information dynamics of the open system, exploring the accessible and inaccessible parts of information. (AU) | |
| Processo FAPESP: | 08/57856-6 - Instituto Nacional de Ciência e Tecnologia em Informação Quântica |
| Beneficiário: | Amir Ordacgi Caldeira |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 15/05581-7 - Controle quântico em sistemas dissipativos |
| Beneficiário: | Felipe Fernandes Fanchini |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 12/18558-5 - Estudo das relações monogâmicas entre o emaranhamento e a correlação quântica |
| Beneficiário: | Goktug Karpat |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |