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Poster Session

Poster Session III

4:00 pm – 6:00 pm, Thursday June 19 Session S00 Oregon Convention Center:, Exhibit Hall E
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Entanglement-enhanced metrology and Hubbard model simulation with strontium atom arrays

Poster 74
Presenter: Alec J Cao (JILA, University of Colorado at Boulder and NIST)
Authors: William Eckner (JILA, University of Colorado at Boulder and NIST), Theodor Lukin-Yelin (JILA, University of Colorado at Boulder and NIST), Nelson Darkwah Oppong (JILA, University of Colorado at Boulder and NIST), Adam Kaufman (JILA, University of Colorado at Boulder and NIST)

Atom arrays are a powerful tool for quantum science. We present recent advances in Hubbard quantum simulation and entanglement-enhanced metrology using strontium atoms trapped in a tweezer-programmable optical lattice. On the metrology side, we demonstrate a family of multiqubit Rydberg gates which enable us to generate up to 9-atom GHZ states and cascades of multiple GHZ-state sizes on the optical clock transition [1]. We also present a new technique using autoionization of divalent atoms to suppress deleterious collective losses during Rydberg dressing, which we use to improve the production of spin-squeezed states [2]. On the simulation side, we explore atom-by-atom assembly of Fock states in the lattice as a new initial resource for atomic Hubbard model simulation, in contrast to the traditional paradigm of bulk degenerate gases. Starting from these assembled Fock states, we demonstrate the preparation of a superfluid in the lattice.

References:

[1] A. Cao, W. J. Eckner, T. Lukin-Yelin, A. W. Young, S. Jandura, L. Yan, K. Kim, G. Pupillo, J. Ye, N. Darkwah Oppong, A. M. Kaufman, Nature 634, 315–320 (2024)

[2] A. Cao, T. Lukin-Yelin, W. J. Eckner, N. Darkwah Oppong, A. M. Kaufman, arXiv:2410.09746

Funding acknowledgement

This work is supported by the ARO (W911NF-22-1-0104), NSF Q-SEnSE (QLCI-2016244), NSF JILA-PFC (PHY-2317149), DOE QSA, and NIST.

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