We study a quantum many-body system of attracting bosons confined in ring-shaped potential and interrupted by weak link. With such architecture, the defines atomtronic interference devices harnessing solitonic currents. demonstrate that is characterized specific interplay between interaction strength In particular, we find that, depending on operating conditions, current can be universal functi...

Using a first principles approach combined with analysis of heuristic tight-binding models, we examine the connectivity dependence of two forms of quantum interference in single molecules. Based on general arguments, Fano resonances are shown to be insensitive to connectivity, while Mach-Zehnder-type interference features are shown to be connectivity dependent. This behaviour is found to occur ...