The control of electrons at the level of the elementary charge e was demonstrated
experimentally already in the 1980s. Ever since, the production of an electrical current ef, or …

Novel core fibers have a wide range of applications in optics, as sources, detectors and
nonlinear response media. Optoelectronic, and even electronic device applications are now …

A hundred years after the discovery of superconductivity, one fundamental prediction of the
theory, coherent quantum phase slip (CQPS), has not been observed. CQPS is a …

The modern primary voltage standard is based on the ac Josephson effect and the ensuing
Shapiro steps, where a microwave tone applied to a Josephson junction yields a constant …

Josephson junctions are a central element in superconducting quantum technology; in these
devices, irreversibility arises from abrupt slips of the quantum phase difference across the …

We present results from an extensive study of fluctuation phenomena in superconducting
nanowires made from sputtered NbN. Nanoscale wires were fabricated in form of a meander …

The properties of two-dimensional (2D) materials such as graphene and monolayer
transition metal dichalcogenides are strongly influenced by domain boundaries. Ultrathin …

Novel physical properties appear when the size of a superconductor is reduced to the
nanoscale, in the range of its superconducting coherence length (ξ0). Such …

Superconducting order in a sufficiently narrow and infinitely long wire is destroyed at zero
temperature by quantum fluctuations, which induce 2 π slips of the phase of the order …

In recent years, superconductivity and vortex matter in curved 3D nanoarchitectures have
turned into a vibrant research avenue because of the rich physics of the emerging geometry …