Journal
SCIENCE
Volume 365, Issue 6455, Pages 775-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aav9105
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Funding
- European Union's Horizon 2020 research and innovation program [817842]
- Investissements d'Avenir LabEx PALM [ANR-10-LABX-0039-PALM]
- IXCORE-Fondation pour la Recherche
- European Union under the ERC consolidator grant SIRPOL [681208]
- European Research Council (ERC) [817842, 681208] Funding Source: European Research Council (ERC)
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The concept of topological phases is a powerful framework for characterizing ground states of quantum many-body systems that goes beyond the paradigm of symmetry breaking. Topological phases can appear in condensed-matter systems naturally, whereas the implementation and study of such quantum many-body ground states in artificial matter require careful engineering. Here, we report the experimental realization of a symmetry-protected topological phase of interacting bosons in a one-dimensional lattice and demonstrate a robust ground state degeneracy attributed to protected zero-energy edge states. The experimental setup is based on atoms trapped in an array of optical tweezers and excited into Rydberg levels, which gives rise to hard-core bosons with an effective hopping generated by dipolar exchange interaction.
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