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Publication Detail / Abstract

F. Cosco, M. Borrelli, J. J. Mendoza-Arenas, F. Plastina, D. Jaksch, S. Maniscalco

Bose-Hubbard lattice as a controllable environment for open quantum systems

published on Physical Review A on April 9, 2018
> Full text via publisher
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.
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