Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session V01: Poster Session III (4:00-6:00pm, EDT)
4:00 PM,
Thursday, June 2, 2022
Room: Grand Ballroom C
Abstract: V01.00066 : Manipulating non-Hermitian skin effect via electric fields*
Presenter:
Jianwen Jie
(Southern University of Science and Techn)
Authors:
Jianwen Jie
(Southern University of Science and Techn)
Yi Peng
(Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology)
Yucheng Wang
(Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology)
Dapeng Yu
(Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology)
the boundaries of the systems under open boundary conditions is called non-Hermitian skin effffect
(NHSE), which is one of the most iconic and important features of a non-Hermitian system. In this
work, we investigate the fate of NHSE in the presence of electric fifields by analytically calculating
the dynamical evolution of an initial bulk state and numerically computing the spectral winding
number, the distributions of eigenstates, as well as the dynamical evolutions. We show the abundant
manipulation effffects of dc and ac fifields on the NHSE, and the physical mechanism behind is the
interplay between the Stark localization, dynamic localization and the NHSE. In addition, the fifinite
size analysis of the non-Hermitian system with a pure dc fifield shows the phenomenon of size
dependent NHSE. The results will help to deepen the understanding of NHSE and its manipulation.
*This work was supported by the National Natural Science Foundation of China (Grants No. U1801661,No.12104205, No.12104210), the Key-Area Research andDevelopment Program of Guangdong Province (GrantNo. 2018B030326001) ,Guangdong Provincial Key Laboratory (Grant No.2019B121203002).
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