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Q: Fachverband Quantenoptik und Photonik

Q 53: Matter Wave Interferometry II

Q 53.5: Vortrag

Donnerstag, 13. März 2025, 12:00–12:15, HS I

Robust Bragg diffraction for atom interferometers using optimal control theory — •Victor Jose Martinez Lahuerta¹, Jan-Niclas Kirsten-Siemß¹, Klemens Hammerer², and Naceur Gaaloul¹ — ¹Leibniz University Hannover, Institut of Quantum Optics, Welfengarten 1, 30167 Hannover, Germany — ²Leibniz University Hannover, Institute for Theoretical physics, Hannover, Germany

Algorithms from the field of artificial intelligence (AI) and machine learning have been used in recent years to efficiently solve multidimensional problems. In physics, these algorithms are applied with increasing success, e.g., to solve the Schrödinger equation for many-body problems, or used experimentally to generate ultracold atoms and control lasers. Here we report on our results obtained optimizing Bragg diffraction with optimal control theory. Great progress has been achieved recently in sensitivity and robustness under certain vibrations, accelerations, and experimental problems. Nevertheless, we focus on the accuracy of the interferometer by minimizing the diffraction phase in a close-to-ideal scenario accounting for a finite temperature of the BEC and the multi-path nature of high-order Bragg diffraction.

Keywords: Bragg Atom interferometry; Diffraction phase free