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

Francesco Cosco, Massimo Borrelli, Juan José Mendoza-Arenas, Francesco Plastina, Dieter Jaksch, Sabrina Maniscalco

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)
123 Downloads (Pure)

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.

Original languageEnglish
Article number040101
Pages (from-to)1-6
JournalPhysical Review A
Volume97
Issue number4
DOIs
Publication statusPublished - 9 Apr 2018
MoE publication typeA1 Journal article-refereed

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