91 citations · 91 across the 1 of their papers we have counts for
3 papers
cond-mat.mes-hall2021★ 91 cited
Non-trivial point-gap topology and non-Hermitian skin effect in photonic crystals
Janet Zhong, Kai Wang, Yubin Park +4
We show that two-dimensional non-Hermitian photonic crystals made of lossy material can exhibit non-trivial point gap topology in terms of topological winding in its complex freque…
math-ph2019
Topological Classification of Non-Hermitian Hamiltonians
Charles C. Wojcik, Xiao-Qi Sun, Tomáš Bzdušek +1
We revisit the problem of classifying topological band structures in non-Hermitian systems. Recently, a solution has been proposed, which is based on redefining the notion of energ…
cond-mat.mes-hall2019
Alice string in Non-Hermitian Systems
Xiao-Qi Sun, Charles C. Wojcik, Shanhui Fan +1
Alice string is a topological defect with a very peculiar feature. When a defect with a monopole charge encircles an Alice string, the monopole charge changes sign. In this work, w…