A substantial part of our budget is dedicated to supporting investments which improve the infrastructure at our partner universities and institutions, such as cutting-edge research instrumentation. Usually, the instrumentation acquired serves the interconnected research within the cluster, being made available for all groups within MCQST.
Dry Dilution Refrigerator <15mK and Optical Access | Walter Schottky Institute (TUM)
Through MCQST funding, a dry dilution refrigerator with optical access for the experiments targeting TMD nanomaterials in RU-B (Quantum Simulation), semiconductor-based spin qubits in RU-C (Quantum Computing), non-classical light sources and detectors in RU-D (Quantum Communication) and spin / nanophotonic sensors in RU-E (Quantum Sensing & Metrology) was aquired. The system has four line-of-sight optical ports into the sample chamber, reaches a base temperature of <15mK in continuous operation, and features active vibration damping and optical fiber feedthroughs. It provides the groups at WSI and WSI/ZNN with access to previously uncharted temperature regimes and facilitates the experiments with semiconducting, superconducting, and nanomechanical hybrid quantum systems.
Automated UHV Electron Beam Evaporation System | Walther Meissner Institute
With increasing complexity of superconducting quantum circuits, a well-controlled fabrication process is mandatory in order to obtain a reasonable fabrication yield. Therefore, MCQST an automated UHV electron beam evaporator with load-lock and flexible substrate holder allowing for shadow evaporation had been acquired. There are several companies offering such systems. The system is operated in the Walther Meissner Institute thin film laboratories, where skilled engineers handle the operations.
The system is made available to other MCQST groups using Al-based quantum circuits in their experiments.