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

P. Haikka, S. McEndoo, G. De Chiara, G. M. Palma, S. Maniscalco

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    90 Citations (Scopus)

    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). © 2011 American Physical Society.
    Original languageEnglish
    Article number031602
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume84
    Issue number3
    DOIs
    Publication statusPublished - 20 Sep 2011

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