Work

Tweezer-Assisted Subwavelength Positioning of Atomic Arrays in an Optical Cavity

Year: 2025

Type: article

Abstract: We present an experimental technique that enables the preparation of defect-free arrays of 87 Rb atoms within a microscopic high-finesse optical standing-wave cavity. By employing optical tweezers, we demonstrate atom positioning with a precision well below the cavity wavelength, a crucial requirement for cavity-QED experiments in which maximum atom-cavity coupling strength is required. We leverage our control capabilities to assemble an array of up to seven atoms with an efficiency that exceeds previous probabilistic methods by 4 orders of magnitude. The atoms are subsequently transferred from the tweezer array to a two-dimensional intracavity optical lattice that offers enhanced coherence for spin qubits while maintaining strong atom confinement. Our system overcomes the efficiency limitations of previous probabilistic loading techniques of cavity-coupled atom arrays and opens the path to multiqubit quantum networks with atoms strongly coupled to optical cavities.

Source: PRX Quantum

DOI: 10.1103/prxquantum.6.010322

Authors: M. Seubert, L. Hartung, S. Welte, G. Rempe, E. Distante

Institutions: Max Planck Institute of Quantum Optics, ETH Zurich, Institute of Photonic Sciences

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,450