Electronic Transport in Double-Nanowire Superconducting Islands with Multiple Terminals

Abstract

We characterize in-situ grown parallel nanowires bridged by a superconducting\nisland. The magnetic-field and temperature dependence of Coulomb blockade peaks\nmeasured across different pairs of nanowire ends are consistent with a sub-gap\nstate extended over the hybrid parallel-nanowire island. Being gate-tunable,\naccessible by multiple terminals and free of quasiparticle poisoning, these\nnanowires show promise for the implementation of several proposals that rely on\nparallel nanowire platforms.\n