- Abstract
We show that bosonic atoms loaded into orbital angular momentum l=1 states of a lattice in a diamond-chain geometry provide a flexible and simple platform for exploring a range of topological effects. This system exhibits robust edge states that persist across the gap-closing points, indicating the absence of a topological transition. We discuss how to perform the topological characterization of the model with a generalization of the Zak’s phase and we show that this system constitutes a realization of a square-root topological insulator. Furthermore, the relative phases arising naturally in the tunneling amplitudes lead to the appearance of Aharanov-Bohm caging in the lattice. We discuss how these properties can be realized and observed in ongoing experiments.
- Authors
- G. Pelegrí, V. Ahufinger, J. Mompart, A. J. Daley, R. G. Dias, i A. M. Marques
- Citation Key
- 302
- COinS Data
- Date Published
- 2019-03-14 08:32
- DOI
- 10.1103/PhysRevA.99.023613
- Pagination
- 023613
- Journal
- Phys. Rev. A
- URL
- https://link.aps.org/doi/10.1103/PhysRevA.99.023613
- Volume
- 99
- Year of Publication
- 2019