The Peter Grünberg Institute (PGI) is dedicated to the discovery and interpretation of new phenomena in condensed matter, the development of novel materials and functional structures at the nano- and quantum-scale as well as innovation in experimental and theoretical methods. Our research places emphasis on potential long-term applications in information technology and related fields. A special focus lies on quantum materials, quantum computing and neuromorphic computing.

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Symmetric Graphene Quantum Dots for Future Qubits

Quantum dots have been considered hot candidates for hosting quantum bits in future quantum processors. Scientists at Forschungszentrum Jülich and RWTH Aachen University have now shown that bilayer graphene has even more to offer here than other materials. The double quantum dots they have created are characterized by a nearly perfect electron-hole-symmetry. The results were published in the renowned journal Nature.

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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