Edge Burst in Non-Hermitian Quantum Walk
Year: 2021
Type: preprint
Abstract: We uncover a novel non-Hermitian phenomenon, dubbed edge burst, in non-Hermitian quantum dynamics. Specifically, in a typical class of non-Hermitian quantum walk, an exceptionally large portion of loss occurs at the system boundary. The physical origin of this edge burst is found to be an interplay between two unique non-Hermitian phenomena, non-Hermitian skin effect and imaginary gap closing. Furthermore, we establish a universal bulk-edge scaling relation underlying the edge burst.
Source: arXiv (Cornell University)
Authors: Wen-Tan Xue, Yu-Min Hu, Fei Song, Zhong Wang
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3202493928