Nature Communications (Mar 2021)

Non-Hermitian route to higher-order topology in an acoustic crystal

  • He Gao,
  • Haoran Xue,
  • Zhongming Gu,
  • Tuo Liu,
  • Jie Zhu,
  • Baile Zhang

DOI
https://doi.org/10.1038/s41467-021-22223-y
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 7

Abstract

Read online

Losses, due to their non-Hermitian nature, are generally disregarded or even considered harmful when looking for non-trivial topological phases. Here, the authors experimentally demonstrate that higher-order topology can emerge as a result of introducing losses in an acoustic crystal.