Master-Thesis in the department of Quantum Systems

The Leibniz Institute of Photonic Technology e.V. (Leibniz-IPHT) in Jena is a non-university research institution and is closely related to the Friedrich Schiller University Jena and a member of the Leibniz Association. The department of Quantum Systems at Leibniz-IPHT now offers the possibility for a


Simulation and characterization of interface defects in superconducting resonators for quantum technologies

Superconducting quantum technologies open up numerous applications in quantum sensing, communication, and metrology or as implementation in quantum computers. Central elements of these circuits, which have been developed in thin film technology at Leibniz-IPHT for many years, are Josephson junctions and superconducting resonators of highest quality. In addition to the layer properties, defects created by patterning processes and interface defects at the superconducting layers play a decisive role for the performance of these systems.

The object of your master thesis is to characterize the manufactured resonators as a function of working temperatures as well as RF powers and to further develop present Python programs for the automation of these measurements as well as for data analysis. In addition, you will perform simulations of interface defects using appropriate EM software in order to be able to provide feedback to the fabrication technologies via the evaluation of the measured values.

Scope of the work:

  • Involvement in forward-looking research on quantum technologies based on a superconductor platform,
  • Characterization of superconducting resonators using state-of-the-art measurement techniques,
  • Further development of a Python-based measurement environment to automate measurements as well as data analysis and parameter extraction,
  • Implementation of EM simulations on interface defects on superconducting resonators based on the Sonnet™ software package,

We expect:

  • Bachelor's degree in physics, basic knowledge of solid state physics and Python preferred,
  • Highly motivated, reliable and independent way of working.

In parallel to the thesis, we offer employment on the basis of a HiWi contract. Successful work can potentially be continued in the context of a subsequent PhD.

Interested parties please contact:

Dr. Matthias Schmelz (, Tel: 03641-206122 oder

Dr. Ronny Stolz (, Tel: 03641-206119.

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