2 papers
cond-mat.quant-gas2026
Detecting Complex-Energy Braiding Topology in a Dissipative Atomic Simulator with Transformer-Based Geometric Tomography
Yang Yue, Nan Li, Xin Zhang +8
Machine learning (ML) is shaping our exploration of topological matter, whose existence is inherently tied to the geometry of quantum states or energy spectra. In non-Hermitian sys…
quant-ph2024
Exceptional nexus in Bose-Einstein condensates with collective dissipation
Chenhao Wang, Nan Li, Jin Xie +6
In multistate non-Hermitian systems, higher-order exceptional points and exotic phenomena with no analogues in two-level systems arise. A paradigm is the exceptional nexus (EX), a…