3 papers
cond-mat.quant-gas2025
Measuring topological invariants of even-dimensional line-gapped non-Hermitian systems through quench dynamics
Xiao-Dong Lin, Long Zhang
The accurate determination of non-Hermitian (NH) topological invariants plays a central role in the study of NH topological phases. In this work, we propose a general framework for…
cond-mat.quant-gas2024
Preparation and observation of anomalous counterpropagating edge states in a periodically driven optical Raman lattice
Hongting Hou, Long Zhang
Motivated by the recent observation of real-space edge modes with ultracold atoms [Braun et al., Nat. Phys. 20, 1306 (2024)], we investigate the preparation and detection of anomal…
cond-mat.quant-gas2024
Measuring Non-Hermitian Topological Invariants Directly from Quench Dynamics
Xiao-Dong Lin, Long Zhang
While non-Hermitian (NH) topological phases and phenomena have been observed across various quantum systems, directly measuring NH topological invariants remains a significant chal…