Detecting non-Bloch topological invariants in quantum dynamics
- URL: http://arxiv.org/abs/2107.14741v1
- Date: Fri, 30 Jul 2021 16:40:30 GMT
- Title: Detecting non-Bloch topological invariants in quantum dynamics
- Authors: Kunkun Wang, Tianyu Li, Lei Xiao, Yiwen Han, Wei Yi and Peng Xue
- Abstract summary: Non-Bloch topological invariants preserve the bulk-boundary correspondence in non-Hermitian systems.
We report the dynamic detection of non-Bloch topological invariants in single-photon quantum walks.
Our work sheds new light on the experimental investigation of non-Hermitian topology.
- Score: 7.544412038291252
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Non-Bloch topological invariants preserve the bulk-boundary correspondence in
non-Hermitian topological systems, and are a key concept in the contemporary
study of non-Hermitian topology. Here we report the dynamic detection of
non-Bloch topological invariants in single-photon quantum walks, revealed
through the biorthogonal chiral displacement, and crosschecked with the dynamic
spin textures in the generalized quasimomentum-time domain following a quantum
quench. Both detection schemes are robust against symmetry-preserving
disorders, and yield consistent results with theoretical predictions. Our
experiments are performed far away from any boundaries, and therefore underline
non-Bloch topological invariants as intrinsic properties of the system that
persist in the thermodynamic limit. Our work sheds new light on the
experimental investigation of non-Hermitian topology.
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