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An integrated atom array-nanophotonic chip platform with background-free imaging

Author

Listed:
  • Shankar G. Menon

    (University of Chicago)

  • Noah Glachman

    (University of Chicago)

  • Matteo Pompili

    (University of Chicago)

  • Alan Dibos

    (Center for Nanoscale Materials
    Argonne National Laboratory
    Center for Molecular Engineering)

  • Hannes Bernien

    (University of Chicago)

Abstract

Arrays of neutral atoms trapped in optical tweezers have emerged as a leading platform for quantum information processing and quantum simulation due to their scalability, reconfigurable connectivity, and high-fidelity operations. Individual atoms are promising candidates for quantum networking due to their capability to emit indistinguishable photons that are entangled with their internal atomic states. Integrating atom arrays with photonic interfaces would enable distributed architectures in which nodes hosting many processing qubits could be efficiently linked together via the distribution of remote entanglement. However, many atom array techniques cease to work in close proximity to photonic interfaces, with atom detection via standard fluorescence imaging presenting a major challenge due to scattering from nearby photonic devices. Here, we demonstrate an architecture that combines atom arrays with up to 64 optical tweezers and a millimeter-scale photonic chip hosting more than 100 nanophotonic cavities. We achieve high-fidelity ( ~ 99.2%), background-free imaging in close proximity to nanofabricated cavities using a multichromatic excitation and detection scheme. The atoms can be imaged while trapped a few hundred nanometers above the dielectric surface, which we verify using Stark shift measurements of the modified trapping potential. Finally, we rearrange atoms into defect-free arrays and load them simultaneously onto the same or multiple devices.

Suggested Citation

  • Shankar G. Menon & Noah Glachman & Matteo Pompili & Alan Dibos & Hannes Bernien, 2024. "An integrated atom array-nanophotonic chip platform with background-free imaging," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50355-4
    DOI: 10.1038/s41467-024-50355-4
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