Annabelle Bohrdt

I am a postdoctoral fellow at Harvard University and ITAMP. Starting in early 2023, I will be an MCQST START fellow and a professor at Universität Regensburg!

My research focuses on strongly interacting quantum many-body systems, which I study using a combination of numerical methods, machine learning techniques and quantum simulation. You can find out more about me here!

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News Dec 2021 - August 2022 

• Read about stripes in mixed-dimensional t-J models in our new paper!

• Find out about skyrmions and more exotic spin structures in the Hofstadter-Fermi-Hubbard model!

• Together with the fantastic Studienstiftung des deutschen Volkes, I recently made a short (3 minute) video about my thesis work -- check it out! 

• Our work on accessing finite temperature properties in quantum simulators through short-time dynamics, based on the Jarzynski equality, is on the arXiv!

• Check out our proposal on how to realize Z2 lattice gauge theories with dynamical matter in quantum simulation experiments!

• Our paper on strong pairing in mixed dimensional bilayer systems has been published in Nature Physics (open access)! Check out the accompanying News&Views by Martin Gärttner & Markus Garst.

• We developed a scheme for efficient quantum state tomography using a combination of restricted Boltzmann machines and active learning - check it out!

• The experimental demonstration of pairing in Fermi-Hubbard ladders, in collaboration with the group of Immanuel Bloch, is finally on the arXiv! 

• Two new arXiv papers this week:

  • • In the first one, we show how through ramping the lattice at the right speed, we can effectively realize a Schrieffer-Wolff transformation, and in particular get rid of doublon-hole fluctuations in the Fermi-Hubbard model, which have been annoying me for years. 

    • In the second one, we study quantum many-body scars, and how they can be made robust against experimental errors through experimentally realistic terms. 

• I've been arwarded the Friedrich Hirzebruch-Promotionspreis of the Studienstiftung des deutschen Volkes (Thesis prize for natural sciences by the German National Academic Foundation). You can find out more about the prize and the other recipients here! 

• Check out our latest paper on how to characterize topologically non-trivial states using experimentally accessible observables. While quantum simulation experiments are getting better and better at realizing new states of matter, it's not always clear how to best probe them. We show numerically that by using the number entropy as a proxy for the entanglement entropy, the central charge can be directly extracted from Fock space snapshots!