Quantum Theory of Materials

We calculate and analyse the complex structural, electronic, magnetic and transport quantities of quantum materials — for fundamental research and practical applications.

Direktor: Prof. Dr. Stefan Blügel

News and Events

AI to Help Control Quantum Particles

In quantum research, customized electromagnetic fields are used to precisely control particles. Physicists at Forschungszentrum Jülich and TU Wien have now shown that machine learning is an excellent way to do this. Tiny particles can be manipulated with electromagnetic fields: They can be captured, held in place or moved to a specific location. However, it is difficult to find out what shape these electromagnetic fields should have exactly and how they should be controlled during the experiment. This often requires lengthy series of experiments with numerous measurements.

PGI Colloquium: Dr. Antoine Browaeys, Institut d’Optique, CNRS, Palaiseau, France

This seminar will present an example of synthetic quantum system, based on laser-cooled ensembles of individual atoms trapped in microscopic optical tweezer arrays. By exciting the atoms into Rydberg states, we make them interact, even at distances of more than ten micrometers. In this way, we study the magnetic properties of an ensemble of more than a hundred interacting ½ spins, in a regime in which simulations by usual numerical methods are already very challenging. Some aspects of this research led to the creation of a startup, Pasqal.

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