Purity as a witness for initial system-environment correlations in open-system dynamics
Journal Article
·
· Physical Review. A
- Departamento de Fisica, Universidade Federal de Sao Carlos, CEP 13565-905, Sao Carlos, Sao Paulo (Brazil)
- Departamento de Fisica, Universidade Federal de Ouro Preto, CEP 35400-000, Ouro Preto, Minas Gerais (Brazil)
We study the dynamics of a two-level atom interacting with a Lorentzian structured reservoir considering initial system-environment correlations. It is shown that under strong system-reservoir coupling the dynamics of purity can determine whether there are initial correlations between the system and the environment. Moreover, we investigate the interaction of two two-level atoms with the same reservoir. In this case, we show that, besides determining if there are initial system-environment correlations, the dynamics of the purity of the atomic system allows the identification of the distinct correlated initial states. In addition, the dynamics of quantum and classical correlations is analyzed.
- OSTI ID:
- 22080329
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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