Regensburg 2025 – scientific programme
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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz
AKPIK 5: Poster
AKPIK 5.9: Poster
Thursday, March 20, 2025, 15:00–16:30, P2
Noisy quantum computing of electronic structure of crystals — •Vojtěch Vašina1,2, Ivana Miháliková1, and Martin Friák1 — 1Institute of Physics of Materials, Czech Academy of Sciences, Brno, Czech Republic — 2Brno University of Technology, Brno, Czech Republic
Quantum computing is currently emerging as a useful paradigm for solving highly complex computational problems. Current quantum computers are unfortunately too noisy to provide sufficient accuracy, and quantum-classical hybrid algorithms emerged as a solution. Variational Quantum Eigensolver (VQE) has gained significant attention for addressing challenges in quantum chemistry, material science, etc. VQEs typically use multiple optimization methods, and the correct choice of optimization method can significantly impact performance. In our study, we focused on the comparison of multiple optimization methods used in VQE when applied to the electronic structure of crystals. The quantum part of VQE ran on a classical simulator with imported noise models from real quantum computers from the IBM Quantum Platform.
Keywords: quantum computers; VQA; optimization methods; hybrid quantum computing; impact of noise