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

2020

9.
Senior, Jorden; Gubaydullin, Azat; Karimi, Bayan; Peltonen, Joonas T.; Ankerhold, Joachim; Pekola, Jukka P.
Heat rectification via a superconducting artificial atom
Communications Physics, 3 (1) :40
08 2020
ISSN: 2399-3650
DOI:10.1038/s42005-020-0307-5
Datei:https://doi.org/10.1038/s42005-020-0307-5
8.
Huang, Haonan; Padurariu, Ciprian; Senkpiel, Jacob; Drost, Robert; Yeyati, Alfredo Levy; Cuevas, Juan Carlos; Kubala, Björn; Ankerhold, Joachim; Kern, Klaus; Ast, Christian R.
Tunnelling dynamics between superconducting bound states at the atomic limit
Nature Physics
2020
ISSN: 1745-2481
DOI:10.1038/s41567-020-0971-0
Datei:https://doi.org/10.1038/s41567-020-0971-0
7.
Senkpiel, Jacob; Dambach, Simon; Etzkorn, Markus; Drost, Robert; Padurariu, Ciprian; Kubala, Björn; Belzig, Wolfgang; Yeyati, Alfredo Levy; Cuevas, Juan Carlos; Ankerhold, Joachim; Ast, Christian R.; Kern, Klaus
Single channel Josephson effect in a high transmission atomic contact
Communications Physics, 3 (1) :131
2020
ISSN: 2399-3650
DOI:10.1038/s42005-020-00397-z
Datei:https://doi.org/10.1038/s42005-020-00397-z
6.
Gosner, Jennifer; Kubala, Björn; Ankerhold, Joachim
Relaxation dynamics and dissipative phase transition in quantum oscillators with period tripling
Phys. Rev. B, 101 :054501
2020
Herausgeber: American Physical Society
DOI:10.1103/PhysRevB.101.054501
Datei:https://link.aps.org/doi/10.1103/PhysRevB.101.054501
5.
Murani, A.; Bourlet, N.; Sueur, H.; Portier, F.; Altimiras, C.; Esteve, D.; Grabert, H.; Stockburger, J.; Ankerhold, J.; Joyez, P.
Absence of a Dissipative Quantum Phase Transition in Josephson Junctions
Phys. Rev. X, 10 :021003
2020
Herausgeber: American Physical Society
DOI:10.1103/PhysRevX.10.021003
Datei:https://link.aps.org/doi/10.1103/PhysRevX.10.021003
4.
Senkpiel, Jacob; Klöckner, Jan C.; Etzkorn, Markus; Dambach, Simon; Kubala, Björn; Belzig, Wolfgang; Yeyati, Alfredo Levy; Cuevas, Juan Carlos; Pauly, Fabian; Ankerhold, Joachim; Ast, Christian R.; Kern, Klaus
Dynamical Coulomb Blockade as a Local Probe for Quantum Transport
Phys. Rev. Lett., 124 :156803
2020
Herausgeber: American Physical Society
DOI:10.1103/PhysRevLett.124.156803
Datei:https://link.aps.org/doi/10.1103/PhysRevLett.124.156803
3.
Kubala, Björn; Ankerhold, Joachim; Armour, Andrew D
Electronic and photonic counting statistics as probes of non-equilibrium quantum dynamics
New Journal of Physics, 22 (2) :023010
2020
Herausgeber: {IOP} Publishing
DOI:10.1088/1367-2630/ab6eb0
Datei:https://doi.org/10.1088%2F1367-2630%2Fab6eb0
2.
Kot, Piotr; Drost, Robert; Uhl, Maximilian; Ankerhold, Joachim; Cuevas, Juan Carlos; Ast, Christian R.
Microwave-assisted tunneling and interference effects in superconducting junctions under fast driving signals
Phys. Rev. B, 101 :134507
2020
Herausgeber: American Physical Society
DOI:10.1103/PhysRevB.101.134507
Datei:https://link.aps.org/doi/10.1103/PhysRevB.101.134507
1.
Wiedmann, M; Stockburger, J T; Ankerhold, J
Non-Markovian dynamics of a quantum heat engine: out-of-equilibrium operation and thermal coupling control
New Journal of Physics, 22 (3) :033007
2020
Herausgeber: {IOP} Publishing
DOI:10.1088/1367-2630/ab725a
Datei:https://doi.org/10.1088%2F1367-2630%2Fab725a

Teaching

Winter Semester 2019/2020

Computeranwendungen I

Vorlesung: PD Dr. Jürgen Stockburger
  Mo, 10-11 Uhr, O28/H21
Übungen: Mo, 11-12 Uhr, PC-Pool O28 Niveau 1

 > Alle weiteren Infos und Aufgaben im Moodle-Kurs

Econophysics: Nonequilibrium Statistics

Dozent: PD Dr. Jürgen Stockburger

Master's Lecture (3+2)

See module description.
> Moodle-Course

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

Previous and Reoccuring Lectures

Mathematik Trainingscamp (Frühjahr)

Dozent: PD Dr. Björn Kubala

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