Hybrid Qubit-Oscillator Module from Motional States of Two Interacting Atoms

Jaeyong Hwang; Tianrui Xu; Sean R. Muleady; Steven K. Pampel; Gur Lubin; Dawson P. Hewatt; Cindy A. Regal; Ana Maria Rey

doi:10.1103/2c4d-h5rc

Hybrid Qubit-Oscillator Module from Motional States of Two Interacting Atoms

Jaeyong Hwang ^1,2, Tianrui Xu ^1,2,3, Sean R. Muleady ^4,5, Steven K. Pampel ¹, Gur Lubin ¹, Dawson P. Hewatt ¹, Cindy A. Regal¹, and Ana Maria Rey ^1,2

¹JILA, NIST, and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
²Center for Theory of Quantum Matter, University of Colorado, Boulder, Colorado 80309, USA
³Institut Quantique and Département de Physique, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
⁴Joint Center for Quantum Information and Computer Science, University of Maryland and NIST, College Park, Maryland 20742, USA
⁵Joint Quantum Institute, University of Maryland and NIST, College Park, Maryland 20742, USA

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Phys. Rev. Lett. 137, 113403 – Published 9 September, 2026

DOI: https://doi.org/10.1103/2c4d-h5rc

Abstract

We propose a qubit-oscillator platform based on the motional states of two interacting atoms in an optical tweezer. By stroboscopically modulating an engineered trap with tunable anharmonicity, we implement a complete set of bosonic operations and their qubit-controlled counterparts with high fidelity. This motional control enables accurate detection of magnetic dipolar interactions with $\sim 10 Hz$ sensitivity in 1 s, reaching sub-Hz resolution within a few minutes in a $20 \times 20$ tweezer array under realistic experimental imperfections. Our approach establishes a versatile platform for motional quantum control of two atoms, with applications to spin-boson physics and precision sensing of interaction potentials and trapping environments.

Physical Review Letters

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Hybrid Qubit-Oscillator Module from Motional States of Two Interacting Atoms

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Hybrid Qubit-Oscillator Module from Motional States of Two Interacting Atoms

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