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  • Letter
  • Open Access

Manipulating synthetic gauge fluxes via multicolor dressing of Rydberg-atom arrays

Xiaoling Wu1,*, Fan Yang2,*,†, Shuo Yang1,3,4,5,‡, Klaus Mølmer2,6, Thomas Pohl2, Meng Khoon Tey1,3,4,5, and Li You1,3,4,5,7,§

  • 1Department of Physics, State Key Laboratory of Low Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
  • 2Department of Physics and Astronomy, Center for Complex Quantum Systems, Aarhus University, DK-8000 Aarhus C, Denmark
  • 3Frontier Science Center for Quantum Information, Beijing 100084, China
  • 4Collaborative Innovation Center of Quantum Matter, Beijing 100084, China
  • 5Hefei National Laboratory, Hefei 230088, China
  • 6Aarhus Institute of Advanced Studies, Aarhus University, DK-8000 Aarhus C, Denmark
  • 7Beijing Academy of Quantum Information Sciences, Beijing 100193, China

  • *These authors contributed equally to this work.
  • †fanyang@phys.au.dk
  • ‡shuoyang@mail.tsinghua.edu.cn
  • §lyou@mail.tsinghua.edu.cn
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Phys. Rev. Research 4, L032046 – Published 28 September, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.L032046

Abstract

Arrays of highly excited Rydberg atoms can be used as powerful quantum simulation platforms. Here, we introduce an approach that makes it possible to implement fully controllable effective spin interactions in such systems. We show that optical Rydberg dressing with multicolor laser fields opens up distinct interaction channels that enable complete site-selective control of the induced interactions and favorable scaling with respect to decoherence. We apply this method to generate synthetic gauge fields for Rydberg excitations where the effective magnetic flux can be manipulated at the single-plaquette level by simply varying the phase of the local dressing field. The system can be mapped to a highly anisotropic Heisenberg model, and the resulting spin interaction opens the door for explorations of topological phenomena with nonlocal density interactions. A remarkable consequence of the interaction is the emergence of topologically protected long-range doublons, which exhibit strongly correlated motion in a chiral and robust manner.

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Phys. Rev. Research 4, L032046– Published 28 September, 2022
  • Received 4 March 2022
  • Accepted 7 September 2022
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