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Emergent interaction-induced topology in Bose-Hubbard ladders

Research output: Contribution to journalArticleResearchpeer review

Authors

  • David Wellnitz
  • Gustavo A. Domínguez-Castro
  • Thomas Bilitewski
  • Monika Aidelsburger
  • Luis Santos

Research Organisations

External Research Organisations

  • JILA
  • University of Colorado Boulder
  • Oklahoma State University
  • Max Planck Institute of Quantum Optics (MPQ)
  • Ludwig-Maximilians-Universität München (LMU)
  • Munich Center for Quantum Science and Technology (MCQST)

Details

Original languageEnglish
Article numberL012012
JournalPhysical Review Research
Volume7
Issue number1
Publication statusPublished - 17 Jan 2025

Abstract

We investigate the quantum many-body dynamics of bosonic atoms hopping in a two-leg ladder with strong on-site contact interactions. We observe that when the atoms are prepared in a staggered pattern with pairs of atoms on every other rung, singlon defects, i.e., rungs with only one atom, can localize due to an emergent topological model, even though the underlying model in the absence of interactions admits only topologically trivial states. This emergent topological localization results from the formation of a zero-energy edge mode in an effective lattice formed by two adjacent chains with alternating strong and weak hoping links (Su-Schrieffer-Heeger chains) and opposite staggering which interface at the defect position. Our findings open the opportunity to dynamically generate nontrivial topological behaviors without the need for complex Hamiltonian engineering.

ASJC Scopus subject areas

Cite this

Emergent interaction-induced topology in Bose-Hubbard ladders. / Wellnitz, David; Domínguez-Castro, Gustavo A.; Bilitewski, Thomas et al.
In: Physical Review Research, Vol. 7, No. 1, L012012, 17.01.2025.

Research output: Contribution to journalArticleResearchpeer review

Wellnitz, D, Domínguez-Castro, GA, Bilitewski, T, Aidelsburger, M, Rey, AM & Santos, L 2025, 'Emergent interaction-induced topology in Bose-Hubbard ladders', Physical Review Research, vol. 7, no. 1, L012012. https://doi.org/10.48550/arXiv.2409.05109, https://doi.org/10.1103/PhysRevResearch.7.L012012
Wellnitz, D., Domínguez-Castro, G. A., Bilitewski, T., Aidelsburger, M., Rey, A. M., & Santos, L. (2025). Emergent interaction-induced topology in Bose-Hubbard ladders. Physical Review Research, 7(1), Article L012012. https://doi.org/10.48550/arXiv.2409.05109, https://doi.org/10.1103/PhysRevResearch.7.L012012
Wellnitz D, Domínguez-Castro GA, Bilitewski T, Aidelsburger M, Rey AM, Santos L. Emergent interaction-induced topology in Bose-Hubbard ladders. Physical Review Research. 2025 Jan 17;7(1):L012012. doi: 10.48550/arXiv.2409.05109, 10.1103/PhysRevResearch.7.L012012
Wellnitz, David ; Domínguez-Castro, Gustavo A. ; Bilitewski, Thomas et al. / Emergent interaction-induced topology in Bose-Hubbard ladders. In: Physical Review Research. 2025 ; Vol. 7, No. 1.
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AU - Domínguez-Castro, Gustavo A.

AU - Bilitewski, Thomas

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AU - Rey, Ana Maria

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