Topological acoustics in coupled nanocavity arrays

Abstract

The Su-Schrieffer-Heeger (SSH) model is likely the simplest one-dimensional concept to study non-trivial 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 ultra-cold atomic systems. Here, we propose an experimentally feasible implementation of the SSH model based on coupled one-dimensional acoustic nanoresonators working in the GHz-THz range. In this simulator it is possible to implement different signs in 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 scheme to experimentally probe their spatial complex amplitude distribution directly by well-established optical pump-probe techniques.

arXiv comment10 pages, 4 figures

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Cited by in corpus (12)

• Acoustic Su-Schrieffer-Heeger lattice: Direct mapping of acoustic waveguides to Su-Schrieffer-Heeger model
• Linear response theory of open systems with exceptional points
• Perspectives on high-frequency nanomechanics, nanoacoustics, and nanophononics
• Coherent generation and detection of acoustic phonons in topological nanocavities
• Brillouin Scattering in Hybrid Optophononic Bragg Micropillar Resonators at 300 GHz
• Phonon engineering with superlattices: generalized nanomechanical potentials
• Breakdown of Conventional Winding Number Calculation in One-Dimensional Lattices with Interactions Beyond Nearest Neighbors
• Topological Signatures in Quantum Transport in Anomalous Floquet-Anderson Insulators
• Topological Surface-plasmon-polaritons on Corrugated Metal-dielectric Surfaces
• Topological and nontopological edge states induced by qubit-assisted coupling potentials
• Classification of unitary operators by local generatability
• Topological optical and phononic interface mode by simultaneous band inversion