Bonn 2025 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

Q 25.55: Poster

Tuesday, March 11, 2025, 14:00–16:00, Tent

Developing a hybrid tweezer array of Rydberg atoms and polar molecules — •Kai Voges, Daniel Hoare, Joe Vagge, Qinshu Lyu, Jonas Rodewald, Ben Sauer, and Michael Tarbutt — Centre for Cold Matter, Imperial College London, UK

Hybrid tweezer arrays of atoms and molecules are an innovative tool for new applications in quantum science and technology. The combination of Rydberg atoms with their large electric dipole moment and polar molecules with their rich level structure and long state coherence times makes this approach a promising platform for quantum simulation [1] and computing [2,3].
In this poster, we present our recent results on the realization of such a hybrid tweezer array based on ultracold Rb atoms and directly laser-coolable CaF molecules. We discuss the advantages and challenges of using two different ultracold particle types and present our preparation strategies for the atoms and molecules. In addition, we show our results in single atom trapping, imaging and tweezer trap characterisation and present our progress for highly efficient tweezer loading.
Our approach will make it possible to construct arbitrary patterns of atoms and molecules. Through the dynamic rearrangement of tweezers and the long-range interactions mediated by Rydberg atoms, this hybrid platform will be a compelling candidate for scalable quantum computing.
[1] J. Dobrzyniecki et al., PRA 108, 052618 (2023)
[2] C. Zhang et al., PRX Quantum 3, 030340 (2022)
[3] K. Wang et al., PRX Quantum 3, 030339 (2022)

Keywords: Molecules; Rydberg atoms; Tweezer Array; Quantum Computing; Quantum Simulation