May 06, 2023

Propagation of an electron wave packet in a nanodevice consisting of an asymmetric quantum ring with two contacts. The ring is biased with a magnetic field. The video shows the propagation of the electron as given by the Schrödinger equation. This propagation is interrupted by three quantum collapses highlighted in purple. These collapse processes correspond to quantum measurements or decoherence events. They occur at finite temperatures and are induced by small interactions of the electron with the environment.

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Solid State Quantum Electronics

Quantum matter heterostructures and interfaces offer fascinating possibilities to create novel electron systems. Many have outstanding properties that are not otherwise found in nature. The design, growth, and exploration of such electron systems are at the focus of the department "Solid State Quantum Electronics". Heterostructures are fabricated by building on recent advances made in the quantum engineering of novel materials, using a unique and highly advanced  epitaxial growth system to deposit complex compounds with atomic-layer precision. The goal of our research is to unravel the physics underlying artificial electron systems generated by interfaces and superlattice-type structures, to design and realize new ones, and to understand their potential for novel nanoscale devices that use the stunning effects of the quantum world to surpass the limits of today's electronics.    


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