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University of Basel

Stable Spins for the Quantum Computer

Dominik Zumbühl describes himself as a person fascinated by physics and driven by the compulsion to discover nature. For six years now, he and his own group in the Department of Physics at the University of Basel have been conducting research and making valuable discoveries in the area of basic research. His research focuses on experiments involving quantum transport in nanostructured materials at low temperatures.

Dominik Zumbühl
Dominik Zumbühl: enthusiastic scientist and motivating teacher. © Universität Basel

For example, his team has successfully observed a spontaneous magnetic ordering of nucleus and electron spins in a quantum wire at temperatures of 0.1 Kelvin, which had previously only been possible at temperatures in the microkelvin range. Coupling nuclei and electrons creates a new material state in which a spin ordering of the nucleus occurs at a much higher temperature.

Zumbühl and his group have therefore made a major contribution to developing a quantum computer using electron spins as a physical basis, which can then be used as an information unit. To use them for computing purposes, they must be kept stable for as long as possible. Physicists have now found a potential way to use the ordering of nucleus spins to affect the stability of electron spins, potentially making it possible to generate considerably more stable units of information.

Dominik Zumbühl is not only an enthusiastic researcher – he is a motivated teacher, too. It is very important to him that he also take his students and doctoral candidates on a journey of discovery in the world of quantum physics. “I’m fascinated by physics and also want to infect my students with the physics bug. My fascination with studying new phenomena is thrilling and doesn’t waver even when things become difficult.”

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