News

• 28 Apr 2026 Three new Master's students join the group: Dev Raheja will analyze higher-order corrections to RWA in light–matter models with Davide and Leonhard; Robin Valk will study Kolmogorov bi-consistency with Davide; and Jonathan Bör is back to the group to study Bargmann spaces and their applications to bosonic systems. Welcome all!

• 10 Feb 2026 We explore how the notion of distance to unreachability gives rise to target specific Quantum Speed Limits from symmetries in our recent paper published in Journal of Physics A: Mathematical and Theoretical.

• 29 Jan 2026 In our new paper, Felix Fischer, Daniel Burgarth, and Davide Lonigro analyze the perils of finite-dimensional approximations, explaining why truncated Hamiltonians can fail to reproduce the correct dynamics.

• 12 Jan 2026 Ebrahim Saheri from Jena University joins the group as a Master's student. He will work with Daniel and Davide on distribution theory and applications to quantum information. Welcome!

• 13 Aug 2025 Two new (twin) papers on arXiv. Here we determine when higher-order squeezing operators are essentially self-adjoint, characterizing their self-adjoint extensions in the negative case; and here we use this knowledge to explain a seemingly paradoxical numerical effect: simulations of higher-order squeezing dynamics can produce starkly different outcomes depending on whether the truncation dimension is even or odd.

• 26 May 2025 Two new papers on the arXiv: we characterize quantitatively the performance of higher-order refinements of the rotating-wave approximation for the semiclassical Rabi model, and we find eternal bounds for spectral transitions in perturbed quantum systems.