Welcome to my personal website!
I am a postdoc at the Institute for Quantum Computing Analytics (PGI-12) at Forschungszentrum Jülich, where I am working on quantum algorithms and quantum simulation. I am also a contributor to the Julia packages QAOA.jl and KadanoffBaym.jl. In 2021, I obtained my PhD in the group for condensed-matter and many-body theory at the University of Bonn. Both my Master's and Bachelor's degrees are from ETH Zurich.
Projects
Quicopt - Helmholtz Field Study Fellowship
We are part of the 2024 Batch of the Helmholtz Enterprise program.
Quicopt is developing optimization software inspired by quantum physics to efficiently solve combinatorial optimization problems. This technology aims to help companies in various industries improve business decisions and reduce costs. The software addresses a key need for powerful solutions to complex optimization tasks.
Master’s Thesis in Quantum Optimization
We are looking for a highly motivated student to work on one of a variety of research ideas revolving around the general topic of quantum optimization. The direct day-to-day supervisor will be provided by me. Recent papers that have come forth out of Master's projects in our group are arxiv:2411.19388 and arxiv:2411.07646. PGI-12 is a lively and supportive institute with access to great infrastructure.
Possible research directions:
- Algorithm development for quantum continuous optimization.
- Algorithm development for low-autocorrelation binary sequences.
- Algorithmic benchmarking: parallel tempering, simulated-bifurcation method, semi-definite programming etc. against our methods.
- High-performance computing: accelerate our methods via special-purpose hardware (e.g. GPUs).
Candidate requirements:
- Strong grades in theoretical physics, in particular quantum mechanics.
- Demonstrated programming experience in Julia or similar.
- Some knowledge of quantum field theory is a plus.
- Motivation to push a research topic independently.
- The official first supervisor needs to come from the student's home university (RWTH Aachen, Uni Cologne or Uni Bonn).
Applications should include CV, transcripts and, if possible, coding examples.
Publications
- Tim Bode, Krish Ramesh, and Tobias Stollenwerk. Quantum combinatorial optimization beyond the variational paradigm: simple schedules for hard problems. Phys. Rev. A, 111:032411, Mar 2025. doi:10.1103/PhysRevA.111.032411.
- Thorge Müller, Ajainderpal Singh, Frank K. Wilhelm, and Tim Bode. Limitations of Quantum Approximate Optimization in Solving Generic Higher-Order Constraint-Satisfaction Problems. 2024. arXiv:2411.19388.
- Dmitriy S. Shapiro, Yannik Weber, Tim Bode, Frank K. Wilhelm, and Dmitry Bagrets. Quantum Simulation of the Dicke-Ising Model via Digital-Analog Algorithms. 2024. arXiv:2412.14285.
- Tim Bode and Frank K. Wilhelm. Adiabatic bottlenecks in quantum annealing and nonequilibrium dynamics of paramagnons. Phys. Rev. A, 110:012611, 2024. doi:10.1103/PhysRevA.110.012611.
- Tim Bode, Michael Kajan, Francisco Meirinhos, and Johann Kroha. Non-markovian dynamics of open quantum systems via auxiliary particles with exact operator constraint. Phys. Rev. Res., 6:013220, 2024. doi:10.1103/PhysRevResearch.6.013220.
- Kevin Lively, Tim Bode, Jochen Szangolies, Jian-Xin Zhu, and Benedikt Fauseweh. Noise robust detection of quantum phase transitions. Phys. Rev. Res., 6:043254, 2024. doi:10.1103/PhysRevResearch.6.043254.
- Aditi Misra-Spieldenner, Tim Bode, Peter K. Schuhmacher, Tobias Stollenwerk, Dmitry Bagrets, and Frank K. Wilhelm. Mean-Field Approximate Optimization Algorithm. PRX Quantum, 4:030335, 2023. doi:10.1103/PRXQuantum.4.030335.
- Tim Bode, Dmitry Bagrets, Aditi Misra-Spieldenner, Tobias Stollenwerk, and Frank K. Wilhelm. QAOA.jl: Toolkit for the Quantum and Mean-Field Approximate Optimization Algorithms. Journal of Open Source Software, 8(86):5364, 2023. doi:10.21105/joss.05364.
- Francisco Meirinhos, Michael Kajan, Johann Kroha, and Tim Bode. Adaptive numerical solution of Kadanoff-Baym equations. SciPost Phys. Core, 5:030, 2022. doi:10.21468/SciPostPhysCore.5.2.030.
- Tim Bode. The two-particle irreducible effective action for classical stochastic processes. Journal of Physics A: Mathematical and Theoretical, 55(26):265401, 2022. doi:10.1088/1751-8121/ac73c6.
- Fahri Emre Öztürk, Tim Lappe, Göran Hellmann, Julian Schmitt, Jan Klaers, Frank Vewinger, Johann Kroha, and Martin Weitz. Observation of a non-Hermitian phase transition in an optical quantum gas. Science, 372(6537):88–91, 2021. doi:10.1126/science.abe9869.
- Tim Lappe. Non-Markovian Dynamics of Open Bose-Einstein Condensates. PhD thesis, Rheinische Friedrich-Wilhelms-Universität Bonn, 2021. URL: https://hdl.handle.net/20.500.11811/8961.
- Fahri Emre Öztürk, Tim Lappe, Göran Hellmann, Julian Schmitt, Jan Klaers, Frank Vewinger, Johann Kroha, and Martin Weitz. Fluctuation dynamics of an open photon Bose-Einstein condensate. Phys. Rev. A, 100:043803, 2019. doi:10.1103/PhysRevA.100.043803.
- Tim Lappe, Anna Posazhennikova, and Johann Kroha. Fluctuation damping of isolated, oscillating Bose-Einstein condensates. Phys. Rev. A, 98:023626, 2018. doi:10.1103/PhysRevA.98.023626.
Talks
- April 2025 - William I. Fine Theoretical Physics Institute, University of Minnesota, tba.
- March 2025 - NASA Ames, Mountain View, tba.
- March 2025 - DPG March Meeting, University of Bonn, Quantum optimization beyond the variational paradigm.
- February 2025 - QOQMS Seminar, University of Strathclyde, Quantum optimization beyond the variational paradigm.
- January 2025 - FZJ Workshop on Bridging Neuromorphic and Quantum Computing, Jülich, Quantum-Inspired Optimization Algorithms.
- November 2024 - HQS Workshop on QC Applications Beyond the Variational Paradigm, Karlsruhe, Quantum Simulation of Electron-Phonin Interactions in Circuit QED.
- August 2024 - FZJ Workshop on the QAOA, Jülich, Mean-Field Approximate Optimization.
- April 2024 - International Network on Quantum Annealing (INQA), Adiabatic Bottlenecks in Quantum Annealing and Nonequilibrium Dynamics of Paramagnons.
- Feb 2024 - Institute for Advanced Simulation (IAS-6), Jülich, Mean-Field Combinatorial Optimization Algorithms.
- March 2022 - APS March Meeting, Chicago, Adaptive Numerical Solution of Kadanoff-Baym Equations.
- June 2020 - Closing Workshop SFB/TR 185, Bonn, Non-Markovian Dynamics of a Driven-Dissipative Photon Condensate.
- September 2018 - Intensive Week SFB/TR 185, Bonn, Introduction to Quantum Field Theory.
- March 2018 - Technische Universität Kaiserslautern, Kaiserslautern, Collapse and revival of photon oscillations.
Contact