Dr. Konstantin Nestmann

Dr. Konstantin Nestmann

Postdoctoral researcher in Physics

Lund University

I was recently awarded the EU funded Marie Skłodowska-Curie fellowship and am working as a postdoctoral researcher at Lund University in Sweden. My research currently focuses on using techniques from statistical field theory and quantum information to explore various aspects of quantum thermodynamics.

Interests
  • Non-perturbative quantum master equations
  • Quantum thermodynamics
  • Quantum non-Markovianity
Education & Research

  • Postdoctoral researcher, since 2023

    Lund University, Sweden

  • PhD in Physics summa cum laude
    (with Prof. M. R. Wegewijs), 2018 - 2022

    RWTH Aachen University, Germany

  • BSc and MSc in Physics
    (with Prof. C. Timm), 2011 - 2018

    Dresden University of Technology, Germany

Publications

K. Nestmann, M. Leijnse, M. R. Wegewijs
August, 2024 J. Chem. Phys. 161, 064108
RealTimeTransport: An open-source C++ library for quantum transport simulations in the strong coupling regime
RealTimeTransport: An open-source C++ library for quantum transport simulations in the strong coupling regime

We published the open-source library RealTimeTransport, which allows to compute both stationary and transient transport observables for generic quantum systems connected to metallic reservoirs.
→ Link to GitHub

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K. Nestmann
July, 2022 Dissertation
Open Quantum Systems: Time (non)-locality, Fixed Points, and Renormalization Groups
Open Quantum Systems: Time (non)-locality, Fixed Points, and Renormalization Groups

In my doctoral thesis I considered the dynamics of open quantum systems from the quite different perspectives of quantum information theory and statistical physics.
PDF DOI
K. Nestmann, V. Bruch, M. R. Wegewijs
May, 2021 Phys. Rev. X 11, 021041
How quantum evolution with memory is generated in a time-local way
How quantum evolution with memory is generated in a time-local way

We establish that the general connection between time-local and non-local quantum master equations is a simple yet general fixed-point equation with far reaching applications.
→ See press releases by RWTH Aachen, FZ Jülich and JARA

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Teaching

Lead teaching assistant (creating exercise sheets, organizing sections):

  • Quantum Information (Prof. David DiVincenzo and Prof. Maarten Wegewijs)
  • Introduction to Theoretical Physics (Prof. Dante Kennes)

Teaching assistant:

  • Statistical Physics (Prof. Volker Meden)
  • Quantum Mechanics (Prof. Volker Meden; Prof. Fabian Hassler)

Contact