Bose-Hubbard lattice as a controllable environment for open quantum systems
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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Physical Review A, Volume 97, issue 4, pp. 1-6
Abstract
We investigate the open dynamics of an atomic impurity embedded in a one-dimensional Bose-Hubbard lattice. We derive the reduced evolution equation for the impurity and show that the Bose-Hubbard lattice behaves as a tunable engineered environment allowing one to simulate both Markovian and non-Markovian dynamics in a controlled and experimentally realizable way. We demonstrate that the presence or absence of memory effects is a signature of the nature of the excitations induced by the impurity, being delocalized or localized in the two limiting cases of a superfluid and Mott insulator, respectively. Furthermore, our findings show how the excitations supported in the two phases can be characterized as information carriers.Description
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Cosco, F, Borrelli, M, Mendoza-Arenas, J J, Plastina, F, Jaksch, D & Maniscalco, S 2018, 'Bose-Hubbard lattice as a controllable environment for open quantum systems', Physical Review A, vol. 97, no. 4, 040101, pp. 1-6. https://doi.org/10.1103/PhysRevA.97.040101