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CANCELLED: Seminar given by Prof. Monika AIDELSBURGER

  • Séminaire (général)
  • Evénement scientifique

CANCELLED: Seminar given by Prof. Monika AIDELSBURGER (University LMU Munich & Munich Center for Quantum Science and Technology Germany), on Tuesday 21 March 2023 at 11am in the auditorium of the Institut d'Optique Graduate School in Palaiseau, on the topic: "Large homogeneous bosonic many-body systems of Cs atoms under the microscope".

Abstract: "Quantum gas microscopes offer intriguing new insights into the properties of quantum many body systems in- and out-of-equilibrium by investigating correlation functions, fluctuations and full counting statistics. One important future task is to combine the technique of quantum gas microscopy with more exotic lattices or atomic species. To this end, it will be vital to relax the experimental requirements needed for high-fidelity single-site reconstruction. For short interatomic separations and limited signal-to-noise ratio, an accurate reconstruction however becomes increasingly challenging. Common methods rapidly decline in performance as the lattice spacing is decreased below half the imaging resolution, hindering the realization of
more complex Hubbard-type models. In this talk, I will present a novel algorithm based on deep convolutional neural networks to reconstruct the site-resolved lattice occupation with high fidelity. The algorithm can be directly trained in an unsupervised fashion with experimental fluorescence images and allows for a fast reconstruction of large images containing several thousand lattice sites.
A second key requirement for the application of quantum simulation for relevant problems of interest is the generation of large homogeneous systems. I will conclude my talk by
summarizing recent efforts in our lab on the realization of initial states with more than 2000 atoms at a filling of about 98%. We further benchmark the performance of our optical lattice
with out-of-equilibrium dynamics of hardcore bosons in quasi-1D lattices."

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