Landau-Zener Transition in the Dynamic Transfer of Acoustic Topological States

Ze Guo Chen, Weiyuan Tang, Ruo Yang Zhang, Zhaoxian Chen, Guancong MA*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Topological notions in physics often emerge from adiabatic evolution of states. It not only leads to fundamental insight of topological protection but also provides an important approach for the study of higher-dimensional topological phases. In this work, we first demonstrate the transfer of topological boundary states (TBSs) across the bulk to the opposite boundary in an acoustic waveguide system. By exploring the finite-size induced minigap between two TBS bands, we unveil the quantitative condition for the breakdown of adiabaticity in the system by demonstrating the Landau-Zener transition with both theory and experiments. Our results not only serve as a foundation of future studies of dynamic state transfer but also inspire applications leveraging nonadiabatic transitions as a new degree of freedom.

Original languageEnglish
Article number054301
JournalPhysical Review Letters
Volume126
Issue number5
DOIs
Publication statusPublished - 1 Feb 2021

Scopus Subject Areas

  • Physics and Astronomy(all)

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