In recent years quantum computing architectures went through a remarkable advancement. While superconducting qubits lead in gate fidelity, their large size limits scalability. Semiconductor spin qubits enable dense integration and fast control but suffer from magnetic noise. Topological qubits offer intrinsic decoherence protection, though they remain experimentally challenging. Emerging hybrid architectures combine superconducting and spin elements to engineer built-in protection against charge and magnetic noise. Examples such as fermion parity and Steffensen qubits use double quantum dots between superconducting leads, where the ground and excited states share the same charge configuration, making them insensitive to charge fluctuations. A platform for the realization of such architectures is based on semiconducting nanowires. In recent years novel materials have been developed, where the during the growth process tunnel barriers can be formed via crystal-phase engineering and the superconductor can also be in-situ depositied.

The goal of the project is to use these novel materials and to develop protected supra-semi qubit architectures. The candidate will work on the device fabrication, measurements at mK temperatures. The project will be done as part of international collaborations.