The group of Prof. Yoichi Ando in the Physics Institute II of the University of Cologne is trying to elucidate the non-Abelian nature of the Majorana zero modes generated in a topological insulator (TI) platform and to build a Majorana qubit. The successful candidate will work on TI-superconductor hybrid devices to understand the mesoscopic topological superconductivity realized in such a platform, to detect and manipulate the emergent Majorana zero modes, and to read out the results of manipulation via charge-parity measurements.