Observing pairs of zero-bias end states in three-terminal superconductor-semiconductor devices: Part II*

Majorana zero-energy modes located at the ends of topological superconductors are an appealing platform for topological quantum computing. Zero-bias peaks (ZBPs) are ubiquitously observed in tunneling spectroscopy of hybrid superconductor-semiconductor nanowires, consistent with expectations for Majorana modes. However, the emergence of those zero-energy modes in pairs at the ends of 1D topological superconductors is a central -- and so far untested -- prediction. Enabled by recent materials breakthroughs in selective area growth (SAG), we demonstrate a platform for testing this prediction by probing the conductance matrix of a three-terminal InAs wire proximitized by Al. We perform tunneling spectroscopy independently on both ends of the wire as a function of longitudinal magnetic field and voltage. ZBPs emerge which are correlated and robust for these parameters.