Home > Research > Publications & Outputs > Robust localized zero-energy modes from locally...

Electronic data

  • PhysRevResearch.2.032057

    Final published version, 1.22 MB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License


Text available via DOI:

View graph of relations

Robust localized zero-energy modes from locally embedded PT-symmetric defects

Research output: Contribution to journalJournal articlepeer-review

Article number032057(R)
<mark>Journal publication date</mark>1/09/2020
<mark>Journal</mark>Physical Review Research
Number of pages7
Publication StatusPublished
<mark>Original language</mark>English


We demonstrate the creation of robust localized zero-energy states that are induced into topologically trivial systems by the insertion of a PT-symmetric defect with local gain and loss. A pair of robust localized states induced by the defect turns into zero-energy modes when the gain-loss contrast exceeds a threshold, at which the defect states encounter an exceptional point. Our approach can be used to obtain robust lasing or perfectly absorbing modes in any part of the system.