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  • Letter
  • Open Access

Reservoir-based deterministic loading of single-atom tweezer arrays

Lars Pause1, Tilman Preuschoff1, Dominik Schäffner1, Malte Schlosser1, and Gerhard Birkl1,2,*

  • 1Technische Universität Darmstadt, Institut für Angewandte Physik, Schlossgartenstraße 7, 64289 Darmstadt, Germany
  • 2Helmholtz Forschungsakademie Hessen für FAIR (HFHF), Campus Darmstadt, Schlossgartenstraße 2, 64289 Darmstadt, Germany

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Phys. Rev. Research 5, L032009 – Published 17 July, 2023

DOI: https://doi.org/10.1103/PhysRevResearch.5.L032009

Abstract

State-of-the-art individual-atom tweezer platforms have relied on loading schemes based on spatially superimposing the tweezer array with a cloud of cold atoms created beforehand. Together with immanent atom loss, this dramatically limits the data rate, as the application sequence must be alternated with the time-consuming phases of magneto-optical trapping and laser cooling. We introduce a modular scheme built on an additional cold-atom reservoir and an array of buffer traps effectively decoupling cold-atom accumulation and single-atom supply from the quantum-register operation. For this purpose, we connect a microlens-based tweezer array to a cloud of laser-cooled atoms held in an auxiliary large-focus dipole trap by utilizing atom transport and buffer traps for dedicated single-atom supply. We demonstrate deterministic loading of a hexagonal target structure with atoms solely originating from the reservoir trap. The results facilitate increased data rates and unlock a path to continuous operation of individual-atom tweezer arrays in quantum science, making use of discrete functional modules, operated in parallel and spatially separated.

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Outline

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Phys. Rev. Research 5, L032009– Published 17 July, 2023
  • Received 27 February 2023
  • Accepted 7 June 2023
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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