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Topological Photonics: Observation of Novel Robust Edge States in Dissipative Non‐Hermitian Quantum Walks (Laser Photonics Rev. 14(7)/2020)
Author(s) -
Wang Bo,
Chen Tian,
Zhang Xiangdong
Publication year - 2020
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.202070041
Subject(s) - quantum walk , physics , photonics , hermitian matrix , dissipative system , quantum mechanics , symmetry (geometry) , topology (electrical circuits) , quantum , quantum computer , mathematics , geometry , combinatorics
In article number 2000092, Bo Wang, Tian Chen, and Xiangdong Zhang have experimentally observed new topological edge states which are protected by Hermitian conjugation of particle–hole symmetry in non‐Hermitian quantum walks. These edge states are robust against static perturbations and disorder. Even though the dissipation cannot be avoided in the system, the localized probability at the boundary induced by these edge states can be amplified during the evolution.