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

Pinja Haikka, Suzanne McEndoo, Gabriele De Chiara, G M Palma, Sabrina Maniscalco

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88 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).
Original languageEnglish
Article number031602(R)
Number of pages5
JournalPhysical Review A
Volume84
Issue number3
DOIs
Publication statusPublished - 20 Sep 2011

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    Haikka, P., McEndoo, S., De Chiara, G., Palma, G. M., & Maniscalco, S. (2011). Quantifying, characterizing, and controlling information flow in ultracold atomic gases. Physical Review A, 84(3), [031602(R)]. https://doi.org/10.1103/PhysRevA.84.031602