Research

Areas

Mesoscopic Josephson junctions

Mesoscopic Josephson junctions are the central building block for superconducting quantum devices. Their functionality is used to unlock a wide range of quantum technologies, from sensing the smallest signals in nature, down to the ...more

Quantum optics of nano-conductors

Quantum electrodynamics describes the interaction of light and matter. It has been explored with unprecedented accuracy for atoms in optical cavities but lately also in solid state devices with artificial atoms. A similar level of accuracy has  ...more

Non-equilibrium quantum dynamics

Thermodynamic equilibrium defines a state of a system where there is no net flow of matter and energy on a macro scale. What happens if quantum systems in contact with thermal reservoirs are pushed out of equilibrium by ...more

Quantum thermodynamics

Macroscopic thermodynamics was developed for very practical reasons, namely, to understand the fundamental limits of converting heat into useful work. At atomic scales and low temperatures ...more

Open quantum systems

Our group has developed techniques to capture equilibrium and dynamical properties of these systems beyond conventional weak-coupling (e.g. master equations). This includes very strong dissipation in the ...more

Econophysics

The discipline of econophysics loosely defines itself through the transfer of methods and insights of statistical physics to economic questions. The corresponding analysis of patterns and correlations in financial and economic data allows previous simplifying assumptions to be dropped, resulting in conclusions on models of causation, and, ultimately, recommendations to market participants and policymakers.

Publications


2019

7.
Dambach, Simon; Egetmeyer, Paul; Ankerhold, Joachim; Kubala, Björn
Quantum thermodynamics with a Josephson-photonics setup
The European Physical Journal Special Topics, 227(15):2053--2058
2019
ISSN: 1951-6401
6.
Tuorila, J.; Stockburger, J. T.; Ala-Nissila, T.; Ankerhold, J.; Möttönen, M.
System-Environment Correlations in Qubit Initialization and Control
2019
submitted
5.
Wiedmann, Michael; Stockburger, Jürgen T.; Ankerhold, Joachim
Out-of-equilibrium operation of a quantum heat engine
March 2019
submitted
4.
Gosner, Jennifer; Kubala, Björn; Ankerhold, Joachim
Quantum properties of a strongly driven Josephson junction
Phys. Rev. B, 99:144524
2019
3.
Dambach, Simon; Armour, Andrew; Kubala, Björn; Ankerhold, Joachim
Josephson junction cavity systems as cousins of the quantum optical micromaser
Physica Scripta,
2019
2.
Rolland, C.; Peugeot, A.; Dambach, S.; Westig, M.; Kubala, B.; Mukharsky, Y.; Altimiras, C.; le Sueur, H.; Joyez, P.; Vion, D.; Roche, P.; Esteve, D.; Ankerhold, J.; Portier, F.
Antibunched Photons Emitted by a dc-Biased Josephson Junction
Phys. Rev. Lett., 122:186804
2019
1.
Senkpiel, Jacob; Rubio-Verdú, Carmen; Etzkorn, Markus; Drost, Robert; Schoop, Leslie M.; Dambach, Simon; Padurariu, Ciprian; Kubala, Björn; Ankerhold, Joachim; Ast, Christian R.; Kern, Klaus
Robustness of Yu-Shiba-Rusinov resonances in the presence of a complex superconducting order parameter
Phys. Rev. B, 100:014502
2019
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Teaching

Winter Semester 2018/2019

Econophysics: Nonequilibrium Statistics

Dozent: PD Dr. Jürgen Stockburger

Master's Lecture (3+2)

See module description.
> Moodle-Course

Condensed Matter Theory: Quantum Mechanics on Macroscopic Scales

Dozent: PD Dr. Björn Kubala

Master's Lecture (3+2)

The course explores theoretical and experimental developments in solid state physics over the past twenty years that describe and access quantum mechanical properties on growing length scales and with growing complexity.
> Moodle-Course

Previous and Reoccuring Lectures

Mathematik Trainingscamp (Frühjahr)

Dozent: PD Dr. Björn Kubala

> Webseite

Condensed Matter Theory: Phase Transitions

Dozent: PD Dr. Björn Kubala

Master's Lecture (3+2)

The transition between different phases of matter (e.g., from ice, to (liquid) water, to vapor) is probably one of the most fascinating concepts in physics; and it is also one of the most complex ones.
> Moodle-Course