Research

Current Projects

A snapshot of my ongoing research directions.

Permutation-equivariant molecular learning

Permutation-Equivariant Molecules

Building symmetry-aware surrogate models that respect permutation structure, remain scale-invariant, and provide robust and reliable predictions for strongly correlated molecular systems.

Inductive bias of parameterized quantum circuits

Inductive Bias of Quantum Circuits

Studying how the spectral inductive bias of parameterized quantum circuits can be leveraged for complex machine learning tasks and shapes trainability, expressivity, and generalization.

Reinforcement learning for error correction

Reinforcement Learning for Error Correction

Developing reinforcement learning agents that adaptively reweight quantum error-correction decoding graphs, improving logical error rates under realistic drift noise in surface-code systems.

Published Projects

Published work and preprints.

2026

  1. poleLearning.png
    Learning pole structures of hadronic states using predictive uncertainty estimation
    Felix Frohnert, Denny Lane B. Sombillo, Evert Nieuwenburg, and 1 more author
    Phys. Rev. D, Mar 2026
  2. latentIMG.png
    Learning minimal representations of fermionic ground states
    Felix Frohnert, Emiel Koridon, and Stefano Polla
    Phys. Rev. Res., May 2026

2025

  1. word.png
    Discovering emergent connections in quantum physics research via dynamic word embeddings
    Felix Frohnert, Xuemei Gu, Mario Krenn, and 1 more author
    Machine Learning: Science and Technology, Feb 2025
  2. learningDFT.png
    Learning density functionals from noisy quantum data
    Emiel Koridon, Felix Frohnert, Eric Prehn, and 3 more authors
    Machine Learning: Science and Technology, Feb 2025

2024

  1. learningEnt.png
    Explainable representation learning of small quantum states
    Felix Frohnert, and Evert Nieuwenburg
    Machine Learning: Science and Technology, Jan 2024
  2. path.png
    Information flow in parameterized quantum circuits
    Abhinav Anand, Lasse Bjørn Kristensen, Felix Frohnert, and 2 more authors
    Quantum Science and Technology, May 2024