Peter Grünberg Institute (PGI)

JARA-Institute Quantum Information (PGI-11)

Our institute pursues a diverse set of topics that further our theoretical understanding of electronic systems and devices at nano- and atomic scales, and the application of these small quantum systems to new forms of information processing.

Institute Heads: Prof. Dr. David DiVincenzo, Prof. Dr. Hendrik Bluhm

Organizational Structure of PGI-11, Introduction Video of PGI-11

News and Events

Key Element for a Scalable Quantum Computer

Millions of quantum bits are required for quantum computers to prove useful in practical applications. The scalability is one of the greatest challenges in the development of future devices. One problem is that the qubits have to be very close to each other on the chip in order to couple them together. Researchers at Forschungszentrum Jülich and RWTH Aachen University have now come a significant step closer to solving the problem. They succeeded in transferring electrons, the carriers of quantum information, over several micrometres on a quantum chip.

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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