Quantifying, characterizing, and controlling information flow in ultracold atomic gases

TitleQuantifying, characterizing, and controlling information flow in ultracold atomic gases
Publication TypeJournal Article
Year of Publication2011
AuthorsHaikka, P, McEndoo, S, De Chiara, G, Palma, GM, Maniscalco, S
JournalPhysical Review A
Volume84
Date Published9/2011
ISSN1094-1622
Abstract

We study quantum information flow in a model comprised of a trapped impurity qubit immersed in a Bose-Einstein-condensed reservoir. We demonstrate how information flux between the qubit and the condensate can be manipulated by engineering the ultracold reservoir within experimentally realistic limits. We show that this system undergoes a transition from Markovian to non-Markovian dynamics, which can be controlled by changing key parameters such as the condensate scattering length. In this way, one can realize a quantum simulator of both Markovian and non-Markovian open quantum systems, the latter ones being characterized by a reverse flow of information from the background gas (reservoir) to the impurity (system).

URLhttp://pra.aps.org/abstract/PRA/v84/i3/e031602
DOI10.1103/PhysRevA.84.031602
Short TitlePhys. Rev. A
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