Atomtronics, is an emerging interdisciplinary field that seeks to develop new functional
methods by creating devices and circuits where ultracold atoms, often superfluids, have a …

We study the dynamics of a supersonically expanding, ring-shaped Bose-Einstein
condensate both experimentally and theoretically. The expansion redshifts long-wavelength …

The beyond-mean-field Lee-Huang-Yang (LHY) correction is ubiquitous in dilute ultracold
quantum gases. However, its effects are often elusive due to the typically much larger …

In superfluid systems several sound modes can be excited, such as, for example, first and
second sound in liquid helium. Here, we excite running and standing waves in a uniform two …

We experimentally and theoretically investigate the anisotropic speed of sound of an atomic
superfluid (SF) Bose-Einstein condensate in a 1D optical lattice. Because the speed of …

Reconnections and interactions of filamentary coherent structures play a fundamental role in
the dynamics of fluids, redistributing energy and helicity among the length scales and …

We realized a quantum geometric “charge” pump for a Bose-Einstein condensate (BEC) in
the lowest Bloch band of a novel bipartite magnetic lattice. Topological charge pumps in …

We report the direct observation of resistive flow through a weak link in a weakly interacting
atomic Bose-Einstein condensate. Two weak links separate our ring-shaped superfluid …

We study the real-time dynamics of vortices in a large elongated Bose-Einstein condensate
(BEC) of sodium atoms using a stroboscopic technique. Vortices are produced via the Kibble …

We describe an easily implementable method for non-destructive measurements of ultracold
atomic clouds based on dark field imaging of spatially resolved Faraday rotation. The signal …