Berlin 2024 – scientific programme

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QI: Fachverband Quanteninformation

QI 15: Quantum Computing Theory

QI 15.10: Talk

Wednesday, March 20, 2024, 12:15–12:30, HFT-FT 101

Quantum optimization with quantum circuits — •Francesco Preti and Felix Motzoi — Forschungszentrum Jülich, Wilhelm-Jonen Strasse, Jülich

We study the possibility of sampling different types of gradients for NISQ optimization from quantum circuits. We show that in certain contexts, e.g. for certain numbers of parameters, we can obtain a faster sampling of gradient guesses that, although they lack the precision of standard gradients, still lead to fast, reliable optimization. We then apply our method to different types of cost functions to evaluate the quality of the optimization.

Keywords: Quantum circuits; Variational quantum algorithms; NiSQ