Maximilian Krahn

I am a PhD student at Imperial College London, co-supervised by Dr. Björn Schuller and Dr. Tolga Birdal. My research is on geometric and topological deep learning and on generative models — spectral operators for graphs and higher-order structures, and diffusion and flow matching for discrete and scientific domains, with applications from quantum computing to imaging. I am currently a research intern at Quantinuum, working on quantum error correction. Feel free to drop me an email if you are interested.

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Education
Experience
  • [06/2026 - 09/2026] Research Intern at Quantinuum, London, UK, working on fault-tolerant state preparation for quantum error correction.
  • [05/2025 - 10/2025] Summer Research Intern at Huawei Camera Lab in Tampere, Finland, working on efficient neural frontends for SPAD image restoration.
  • [06/2024 - 08/2024] Summer Quantum Student at Los Alamos National Laboratory, USA.
  • [08/2023 - 12/2023] Visiting Student Researcher at KAUST, Saudi Arabia in Prof. Peter Wonka's lab working on 3D neural representation.
  • [10/2022 - 12/2022] Research Assistant at Aalto University, Finland in Vesa Hirvisalo's lab working on Reinforcement Learning methods.
  • [06/2022 - 08/2022] Summer Research Intern at École Polytechnique in Maks Ovsjanikov's lab working on graph diffusion methods.
  • [08/2021 - 09/2021] Research Intern at CYENS Centre of Excellence, Cyprus working on auditing social biases in commercial image-tagging services.
  • [08/2020 - 07/2021] Research Assistant at MPI-Inf in Dr. Vladislav Golyanik's group working on Quantum Computer Vision algorithms.
News
Research
Collapsed Effective Operators teaser Collapsed Effective Operators for Higher-order Structures
Krahn M*, Bastian L.*, Garg V., Schuller B., Birdal T.
(* denotes shared first author) ICML, 2026
project page

A vertex-level spectral operator that condenses higher-order topology via Schur complementation of a graded Laplacian

Projected Stochastic Gradient Descent with Quantum Annealed Binary Gradients
Krahn M, Sasdelli M., Yang F, Golyanik V., Kannala J., Chin T., Birdal T.
BMVC, 2024
project page

A quantum annealer deployable optimiser for binary neural networks

Scheduling conditional task graphs with deep reinforcement learning
Debner A., Krahn M, Hirvisalo V.
NLDL, 2024
code

A reinforcement learning based scheduler for conditional task graphs

TIDE: Time Derivative Diffusion for Deep Learning on Graphs
Behmanesh M*, Krahn M*, Ovsjanikov M.
(* denotes shared first author) ICML, 2023
code

A new graph neural network architecture based on time derivative diffusion for node classification

QuAnt: Quantum Annealing with Learnt Couplings
Benkner, M. S., Krahn M., Tretschk, E., Lähner, Z., Moeller, M. , Golyanik V.
ICLR, 2023 as spotlight (top 20%)
project website

A deep learning framework to learn QUBO representations for computer vision problems

Shifting our Awareness, Taking Back Tags: Temporal Changes in Computer Vision Services' Social Behaviors
Barlas P., Krahn M., Kleanthous S., Kyriakou K., Otterbacher J.
ICWSM, 2022

A study of biases of commercially available image tagging services

Convex Joint Graph Matching and Clustering via Semidefinite Relaxations
Krahn M, Bernard F., Golyanik V.
3DV, 2021
project page

A SDP formulation for joint graph matching and clustering

Academic Services
  • Conference Reviewer
    • NeurIPS: 2022, 2023, 2025, 2026
    • ICML: 2025, 2026
    • ICLR: 2025, 2026
    • CVPR: 2023, 2024
    • ICCV: 2023
    • ICWSM: 2021
  • Supervision
    • Co-supervisor of an MSc research project at Imperial College London (2026)

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