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



: Cosco F, Borrelli M, Mendoza-Arenas JJ, Plastina F, Jaksch D, Maniscalco S

Publisher: AMER PHYSICAL SOC

: 2018

: Physical Review A

: PHYSICAL REVIEW A

: PHYS REV A

: ARTN 040101

: 97

: 4

: 6

: 2469-9926

DOI: https://doi.org/10.1103/PhysRevA.97.040101

: https://research.utu.fi/converis/portal/Publication/30993379


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.



Last updated on 2024-26-11 at 23:52