Evidencing non-Bloch dynamics in temporal topolectrical circuits

Maopeng Wu, Qian Zhao, Lei Kang, Mingze Weng, Zhonghai Chi, Ruiguang Peng, Jingquan Liu, Douglas H. Werner, Yonggang Meng, Ji Zhou

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

One of the core concepts from the non-Hermitian skin effect is the extended complex wave vectors (CW) in the generalized Brillouin zone (GBZ), while the origin of CW remains elusive, and further experimental demonstration of GBZ is still lacking. We show that the bulk states of an open system dynamically governed by the Lindblad master equation exhibit non-Bloch evolution which results in CW. Experimentally, we present temporal topolectrical circuits to serve as simulators for the dynamics of an open system. By reconstructing the correspondence between the bulk states of an open system and circuit voltage modes through gauge scale potentials in the circuit, the non-Bloch evolution is demonstrated. Facilitated by the simulators and proper approach to characterize the non-Bloch band proposed here, the GBZ is confirmed. Our work may advance the investigation of the dissipative topological modes and provide a versatile platform for exploring the unique evolution and topology for both closed and open systems.

Original languageEnglish (US)
Article number064307
JournalPhysical Review B
Volume107
Issue number6
DOIs
StatePublished - Feb 1 2023

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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