Anomalous edge state in a non-Hermitian lattice

TE Lee - Physical review letters, 2016 - APS
We show that the bulk-boundary correspondence for topological insulators can be modified
in the presence of non-Hermiticity. We consider a one-dimensional tight-binding model with …

Measuring entanglement entropy and its topological signature for phononic systems

ZK Lin, Y Zhou, B Jiang, BQ Wu, LM Chen… - Nature …, 2024 - nature.com
Entanglement entropy is a fundamental concept with rising importance in various fields
ranging from quantum information science, black holes to materials science. In complex …

Non-Hermitian topology in Hermitian topological matter

S Hamanaka, T Yoshida, K Kawabata - Physical Review Letters, 2024 - APS
Non-Hermiticity gives rise to distinctive topological phenomena absent in Hermitian systems.
However, connection between such intrinsic non-Hermitian topology and Hermitian topology …

Vacancy-like dressed states in topological waveguide QED

L Leonforte, A Carollo, F Ciccarello - Physical Review Letters, 2021 - APS
We identify a class of dressed atom-photon states forming at the same energy of the atom at
any coupling strength. As a hallmark, their photonic component is an eigenstate of the bare …

Defective edge states and number-anomalous bulk-boundary correspondence in non-Hermitian topological systems

XR Wang, CX Guo, SP Kou - Physical Review B, 2020 - APS
Non-Hermitian topological systems exhibit properties very different from those of their
Hermitian counterparts. An important puzzling issue for non-Hermitian topological systems is …

Symmetry-resolved entanglement in a long-range free-fermion chain

F Ares, S Murciano, P Calabrese - Journal of Statistical …, 2022 - iopscience.iop.org
We investigate the symmetry resolution of entanglement in the presence of long-range
couplings. To this end, we study the symmetry-resolved entanglement entropy in the ground …

Topological quantum critical points in the extended Bose-Hubbard model

J Fraxanet, D González-Cuadra, T Pfau… - Physical Review Letters, 2022 - APS
The combination of topology and quantum criticality can give rise to an exotic mix of
counterintuitive effects. Here, we show that unexpected topological properties take place in …

Topological mechanics beyond wave dynamics

A Wang, Y Zhou, CQ Chen - Journal of the Mechanics and Physics of Solids, 2023 - Elsevier
Topological phases of matter, originally derived from condensed matter physics, have been
extensively exploited in photonics and phononics, and recently in mechanical metamaterial …

Quantum geometry and stabilization of fractional Chern insulators far from the ideal limit

G Shavit, Y Oreg - Physical Review Letters, 2024 - APS
In the presence of strong electronic interactions, a partially filled Chern band may stabilize a
fractional Chern insulator (FCI) state, the zero-field analog of the fractional quantum Hall …

Exploring interacting topological insulator in the extended Su-Schrieffer-Heeger model

X Zhou, JS Pan, S Jia - Physical Review B, 2023 - APS
Exploring topological phases in interacting systems is a challenging task. We investigate
many-body topological physics of interacting fermions in an extended Su-Schrieffer-Heeger …