SAB: Quantencomputer mittels Ionenfallen in Niob-basierter Technologie (Quinte)

Quantum computer technology is the key technology behind a revolution that is just beginning. The application of these systems promises increased energy and time efficiency (by a factor of about one order of magnitude), while the ability to develop and build these systems means technological leadership, secures jobs, and is the starting point for further top-level research. Ion traps are of particular interest to Saxony, as this technology is used in Germany by a large number of research institutions, SMEs, and industry. The construction of an ion trap requires the use of superconductors. Their manufacture requires high process temperatures, whereas the operating temperatures are just above absolute zero at 4K. The thermomechanical reliability of such key components at operating temperatures of 4K is largely unknown. This is where the project comes in. Using multidimensional demonstrators representing superconducting coils essential for ion traps, which are constructed and thermomechanically characterized in the project, insights and data on optimal design, the minimization of internal mechanical stresses, and their fracture mechanical behavior are to be investigated and simulated. Unique experimental setups will enable investigations of material stiffness, bending tests, and the determination of adhesive strength in the range from 4K up to several 100 °C, generating scientific understanding. The technology-dependent material data obtained is unique and allows the creation of digital twins that cover the temperature regime from manufacturing to the use of microcomponents, are transferable, and form the basis of a new value chain. This is expected to result in a significant reduction in failure rates and thus an increase in the sustainability of the systems.