2017/05/31 by Dariusz Wiater, Tomasz Sowiński, Jakub Zakrzewski · 1 citation
Physics and Astronomy · #quant-ph #cond-mat.dis-nn #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.96.043629
published as Phys. Rev. A 96, 043629 (2017) · upgraded references
arxiv created 2017/06/03 · arxiv updated 2017/11/06
Dynamical properties of two bosonic quantum walkers in a one-dimensional lattice are studied theoretically. Depending on the initial state, interactions, lattice tilting, and lattice disorder, whole plethora of different behaviors are observed. Particularly, it is shown that two bosons system manifests the many-body localization like behavior in the presence of a quenched disorder. The whole analysis is based on a specific decomposition of the temporal density profile into different contributions from singly and doubly occupied sites. In this way, the role of interactions is extracted. Since the contributions can be directly measured in experiments with ultra-cold atoms in optical lattices, the predictions presented may have some importance for upcoming experiment.