Year: 2018
Type: article
Abstract: The Su-Schrieffer-Heeger (SSH) model is likely the simplest one-dimensional concept to study nontrivial topological phases and topological excitations. Originally developed to explain the electric conductivity of polyacetylene, it has become a platform for the study of topological effects in electronics, photonics, and ultracold atomic systems. Here, we propose an experimentally feasible implementation of the SSH model based on coupled one-dimensional acoustic nanoresonators working in the gigahertz-terahertz range. In this simulator it is possible to implement different signs of the nearest-neighbor interaction terms, showing full tunability of all parameters in the SSH model. Based on this concept we construct topological transition points generating nanophononic edge and interface states and propose an easy experimental scheme to directly probe their spatial complex amplitude distribution by well-established optical pump-probe techniques.
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W2802716133