Distributed correlations and information flows within a hybrid multipartite quantum-classical system - Publikacja - MOST Wiedzy

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Distributed correlations and information flows within a hybrid multipartite quantum-classical system

Abstrakt

Understanding the non-Markovian mechanisms underlying the revivals of quantum entanglement in the presence of classical environments is central in the theory of quantum information. Tentative interpretations have been given by either the role of the environment as a control device or the concept of hidden entanglement. We address this issue from an information-theoretic point of view. To this aim, we consider a paradigmatic tripartite system, already realized in the laboratory, made of two independent qubits and a random classical field locally interacting with one qubit alone.We study the dynamical relationship between the two-qubit entanglement and the genuine tripartite correlations of the overall system, finding that collapse and revivals of entanglement correspond, respectively, to the rise and fall of the overall tripartite correlations. Interestingly, entanglement dark periods can enable plateaux of nonzero tripartite correlations. We then explain this behavior in terms of information flows among the different parties of the system. Besides showcasing the phenomenon of the freezing of overall correlations, our results provide insights on the origin of retrieval of entanglement within a hybrid quantum-classical system.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
PHYSICAL REVIEW A nr 92, wydanie 3, strony 1 - 8,
ISSN: 1050-2947
Język:
angielski
Rok wydania:
2015
Opis bibliograficzny:
Leggio B., Lo R., Soares-Pinto D., Horodecki P., Compagno G.: Distributed correlations and information flows within a hybrid multipartite quantum-classical system// PHYSICAL REVIEW A. -Vol. 92, iss. 3 (2015), s.1-8
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1103/physreva.92.032311
Weryfikacja:
Politechnika Gdańska

wyświetlono 16 razy

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