Inhomogeneous superconductors can host electronic excitations, known as Andreev bound
states (ABSs), below the superconducting energy gap. With the advent of topological …

We report the emergence of zero-energy states in the trivial phase of a short nanowire
junction with a strong spin-orbit coupling and magnetic field, formed by strong coupling …

Following the demonstration of semiconductor-based Josephson junctions, which are fully
tunable by electrical means, new routes have been opened for the study of hybrid …

Degeneracy and symmetry have a profound relation in quantum systems. Here, we report
gate-tunable subband degeneracy in PbTe nanowires with a nearly symmetric cross …

An odd-occupied quantum dot in a Josephson junction can flip transmission phase, creating
a π junction. When the junction couples topological superconductors, no phase flip is …

The Andreev spectrum of a quantum dot embedded in a hybrid semiconductor-
superconductor interferometer can be modulated by electrostatic gating, magnetic flux …

Andreev molecules consist of two coherently coupled Josephson junctions and permit
nonlocal control over supercurrents. By making the barriers magnetic and thus creating a …

Using double quantum dots as the weak link of a Josephson junction, we realize the
superconducting analog of the celebrated two-impurity Kondo model. The device shows a …

We present a Josephson junction based on a Ge-Si core-shell nanowire with transparent
superconducting Al contacts, a building block which could be of considerable interest for …

We characterize parallel double quantum dot Josephson junctions based on closely spaced
double nanowires bridged by in-situ deposited superconductors. The parallel double dot …