Observation of a symmetry-protected topological phase of interacting bosons with Rydberg atoms
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-b...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2019-08, Vol.365 (6455), p.775-780 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | de Léséleuc, Sylvain Lienhard, Vincent Scholl, Pascal Barredo, Daniel Weber, Sebastian Lang, Nicolai Büchler, Hans Peter Lahaye, Thierry Browaeys, Antoine |
| description | 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. |
| doi_str_mv | 10.1126/science.aav9105 |
| format | Article |
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| source | American Association for the Advancement of Science |
| subjects | Atomic Physics Bosons Physics Symmetry |
| title | Observation of a symmetry-protected topological phase of interacting bosons with Rydberg atoms |
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