MvL-Kolloquium: Dr. Heike Riel

The progress of Quantum Computing has significantly accelerated in recent years due to increased resources for research and development across the world. The focus has changed from just building quantum devices to establishing a quantum computing system including software and applications. An overview of the recent advancements of superconducting quantum computing systems is presented including the achievements made to scale processors to 433 qubits and scale up to 4000 qubits in 2025. Three key metrics are defined, scale, quality, and speed to measure performance. The computational capabilities of today’s quantum chips can be extended by applying circuit knitting techniques as well as error suppression and mitigation to reach quantum advantage. Developing approaches to connect quantum processors with classical as well as quantum communication links enables a modular approach to further scale quantum systems. For the first time in history, we are seeing a branching point in computing paradigms with the emergence of quantum computers.