PT phase transitions of edge states at PT symmetric interfaces in non-Hermitian topological insulators

• Main Authors: Ni, Xiang, Smirnova, Daria, Poddubny, Alexander, Leykam, Daniel, Chong, Yidong, Khanikaev, Alexander B.
• 其他作者: School of Physical and Mathematical Sciences
• 格式: Article
• 語言: English
• 出版: 2019
• 主題: DRNTU::Science::Physics; Parity-Time (PT) Symmetry; Topological Insulators
• 在線閱讀: https://hdl.handle.net/10356/103973; http://hdl.handle.net/10220/47405
• 機構: Nanyang Technological University

We demonstrate that the parity-time (PT) symmetric interfaces formed between non-Hermitian amplifying (“gainy”) and lossy topological crystals exhibit PT phase transitions separating phases of lossless and decaying/amplifying topological edge transport. The spectrum of these interface states exhibit...