Research - Quantum Physics subareas

In nanostructured systems at low temperatures,  pronounced quantum behavior can be observed. We develop the theoretical tools to better describe few and many-body quantum systems in the presence of correlations and coherence, and we use advanced nanodevices to experimentally observe these effects. Goals are the discovery of new quantum physics and its potential future use in advanced device design.

 

Transport physics

We focus on experimental and theoretical studies of the transport physics and application aspects of nanostructures and quantum devices made from semiconductor heterostructures and nanowires, as well as emerging new materials such as topological insulators.

Quantum information

An ability to utilize quantum resources like the superposition of states and entanglement opens completely new perspectives for technology.
Experimentally we work with rare-earth-ion doped inorganic crystals which are able to preserve quantum superposition states for exceptionally long times. On the theory side, the research focus is on entanglement generation in different systems on the nanoscale.

Optical physics

The relevant timescales for electron excitation and motion in nanostructures are femtoseconds and attoseconds.  We will explore the population dynamics and time-dependent mobility of photo-excited charge in nanowires. We aim for a fundamental understanding of the times, energies and spatial distribution of electron excitation and recombination dynamics in nanowires and how this is correlated to their structure.