Atomtronics deals with matter-wave circuits of ultracold atoms manipulated through
magnetic or laser-generated guides with different shapes and intensities. In this way, new …

Atomtronics is an emerging field that aims to manipulate ultracold atom moving in matter-
wave circuits for fundamental studies in both quantum science and technological …

Persistent currents in annular geometries have played an important role in disclosing the
quantum phase coherence of superconductors and mesoscopic electronic systems …

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

We have produced persistent currents of ultracold fermionic atoms trapped in a ring, with
lifetimes greater than 10 sec in the strongly interacting regime. These currents remain stable …

Despite being at the heart of the theory of the “Big Bang” and cosmic inflation, the quantum-
field-theory prediction of false vacuum tunneling has not been tested. To address the …

We study the time evolution of a supercurrent imprinted on a one-dimensional ring of
interacting bosons in the presence of a defect created by a localized barrier. Depending on …

We investigate the role of vortices in the decay of persistent current states of annular atomic
superfluids by solving numerically the Gross–Pitaevskii equation, and we directly compare …

Persistent currents flowing in spatially closed tracks define one of the most iconic concepts
in mesoscopic physics. They have been studied in solid-state platforms such as superfluids …

We theoretically investigate the stochastic decay of persistent currents in a toroidal ultracold
atomic superfluid caused by a perturbing barrier. Specifically, we perform detailed three …