3 papers
quant-ph2026
Robust Superradiance and Spontaneous Spin Ordering in Disordered Waveguide Quantum Electrodynamics
Xin H. H. Zhang, Daniel Malz, Peter Rabl
We study the collective emission of a disordered array of excited two-level atoms into a one-dimensional photonic waveguide. In the perfectly ordered case, where atoms are spac…
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-ph2025
Unraveling superradiance: Entanglement and mutual information in collective decay
Xin H. H. Zhang, Daniel Malz, Peter Rabl
We study the collective decay of an initially inverted ensemble of two-level emitters in two distinct scenarios: when coupled to a squeezed photonic reservoir and when interacting…