Realization of a doped quantum antiferromagnet in a Rydberg tweezer array

ORAL

Abstract

Doping an antiferromagnetic (AFM) Mott insulator is central to our understanding of a variety of phenomena in strongly-correlated electrons. To describe the competition between tunneling t of hole dopants and AFM spin interactions J, theoretical and numerical studies often focus on the paradigmatic t-J model. Here, we realize a doped quantum antiferromagnet with next-nearest neighbour (NNN) tunnelings t' and hard-core bosonic holes using a Rydberg tweezer platform. We utilize coherent dynamics between three Rydberg levels, encoding spins and holes, to implement a tunable bosonic t-J-V model allowing us to study previously inaccessible parameter regimes. We observe dynamical phase separation between hole and spin domains, and demonstrate the formation of repulsively bound hole pairs.

*Agence Nationale de la Recherche (ANR-22-PETQ-0004 France 2030, project QuBitAF)European Research Council (Advanced grant No. 101018511-ATARAXIA)Horizon Europe programme HORIZON-CL4- 2022-QUANTUM-02-SGA (project 101113690 (PASQuanS2.1)Simons Collaboration on Ultra-Quantum Matter, which is a grant from the Simons Foundation (651440)Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – EXC-2111 – 390814868European Research Council (ERC) under the European Union’sHorizon 2020 research and innovation programm (Grant Agreement no 948141) — ERC Starting Grant SimUcQuamHarvard Quantum Initiative Postdoctoral Fellowship in Quantum Science and EngineeringStructures (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC2181/1-390900948MCIN/AEI/10.13039/501100011033 (PID2020-119667GA-I00, CNS2022-13578, EUR2022-134067European Union NextGenerationEU PRTR-C17.I1)

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Publication: https://arxiv.org/abs/2501.08233

Presenters

  • Lukas Homeier

    • Ludwig-Maximilians-Universitaet (LMU-Munich)
    • JILA

Authors

  • Lukas Homeier

    • Ludwig-Maximilians-Universitaet (LMU-Munich)
    • JILA

  • Mu Qiao

    • Tsinghua University

  • Gabriel Emperauger

    • Institut d'Optique Graduate School

  • Cheng Chen

    • Tsinghua University

  • Simon Hollerith

    • Harvard University

  • Guillaume Bornet

    • Princeton University
    • Institut d'Optique Graduate School

  • Romain Martin

    • Institut d'Optique Graduate School

  • Bastien Gely

    • Institut d'Optique Graduate School

  • Lukas Klein

    • Institut d'Optique Graduate School

  • Daniel Barredo

    • Institut d'Optique Graduate School

  • Sebastian Geier

    • Heidelberg University in Germany

  • Neng-Chun Chiu

    • Harvard University

  • Fabian Grusdt

    • Ludwig-Maximilians-Universitaet (LMU-Munich)
    • LMU Munich and Munich Center for Quantum Science and Technology (MCQST)
    • LMU Munich; MCQST
    • LMU Munich

  • Annabelle Bohrdt

    • University of Regensburg

  • Thierry Lahaye

    • CNRS/THALES

  • Antoine Browaeys

    • Institut d'Optique Graduate School