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Quantum phases of lattice dipolar bosons coupled to a high-finesse cavity

Yaghmorassene Hebib1,*, Chao Zhang2,*,†, Jin Yang3,‡, and Barbara Capogrosso-Sansone1

  • 1Department of Physics, Clark University, Worcester, Massachusetts 01610, USA
  • 2Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 3Department of Physics, Research Laboratory of Electronics, MIT-Harvard Center for Ultracold Atoms, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

  • *These authors contributed equally.
  • †zhangchao1986sdu@gmail.com
  • ‡dypole_jin@mit.edu
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Phys. Rev. A 107, 043318 – Published 24 April, 2023

DOI: https://doi.org/10.1103/PhysRevA.107.043318

Abstract

Two types of long-range interactions, dipolar interaction and cavity-mediated interaction, lead to exotic quantum phases. Both interactions were realized and observed in optical lattice setups. Here, we study quantum phases of dipolar bosons trapped in optical lattices and coupled to a high-finesse cavity where both dipolar interaction and cavity-mediated interaction coexist. We perform quantum Monte Carlo simulations and find that the checkerboard solid is enhanced and the checkerboard supersolid phase can exist in a wide range of densities (e.g., 0.27≲n≲0.73). Our unbiased numerical results suggest that both solid and supersolid phases can be achieved experimentally with magnetic atoms coupled to a cavity.

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Phys. Rev. A 107, 043318– Published 24 April, 2023
  • Received 21 January 2023
  • Accepted 27 March 2023
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