Realizing distance-selective interactions in a Rydberg-dressed atom array

ORAL

Abstract

Neutral atoms trapped in optical lattices or optical tweezers are an appealing platform for quantum computing. Atomic ground states are well suited to store quantum information, and entanglement can be created by coupling to highly excited Rydberg states. Typically, Rydberg interactions feature long-range tails, which complicate the isolation of pairs of atoms during the required two-qubit gate operations. Here, we employ off-resonant laser coupling of molecular potentials between Rydberg atom pairs to engineer interactions that are strongly peaked in distance. We verify the resulting “Rydberg-dressed” interactions between ground state atoms using many-body Ramsey interferometry in a quantum gas microscope. We identify atom loss and coupling to continuum modes as the main limitation of our present scheme and outline paths to mitigate these effects, thereby paving the way towards the parallelized creation of large-scale entanglement.

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Publication: https://arxiv.org/abs/2110.10125

Presenters

  • Johannes Zeiher

    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany

Authors

  • Johannes Zeiher

    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany

  • Simon Hollerith

    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany

  • Kritsana Srakaew

    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany

  • David Wei

    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany

  • Antonio Rubio Abadal

    • Max Planck Institute of Quantum Optics

  • Daniel Adler

    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany

  • Pascal Weckesser

    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany
    • Max Planck Institute for Quantum Optics, 85748 Garching, Germany and Albert-Ludwigs-Universitaet Freiburg, Physikalisches Institut, 79104 Freiburg, Germany

  • Andreas Kruckenhauser

    • Institute of Quantum Optics and Quantum Information of the Austrian Academy of Sciences

  • Valentin Walther

    • Harvard - Smithsonian Center for Astroph
    • Harvard - Smithsonian Center for Astrophysics

  • Rick Van Bijnen

    • Institute of Quantum Optics and Quantum Information of the Austrian Academy of Sciences

  • Jun Rui

    • Max Planck Institute of Quantum Optics

  • Christian Gross

    • Eberhard Karls Universität Tübingen
    • Physikalisches Institut, Eberhard Karls Universität Tübingen

  • Immanuel Bloch

    • Max Planck Institute for Quantum Optics
    • Ludwig-Maximilians-Universität (LMU-Munich), Max-Planck Institut für Quantenoptik (MPQ), Munich Center for Quantum Science and Technology (MCQST)
    • Max Planck Institute of Quantum Optics
    • Max Planck Institute of Quantum Optics, 85748 Garching, Germany and Fakultät für Physik, Ludwig-Maximilians-Universität, 80799 Munich, Germany