5 papers
Scaling of Quantum Geometry Near the Non-Hermitian Topological Phase Transitions
Y R Kartik, Jhih-Shih You, H. H. Jen
The geometry of quantum states can be an indicator of criticality, yet it remains less explored under non-Hermitian topological conditions. In this work, we unveil diverse scalings…
Excitation transfer and many-body dark states in waveguide quantum electrodynamics
Wei Chen, Guin-Dar Lin, H. H. Jen
In one-dimensional waveguide quantum electrodynamics systems, quantum emitters interact through infinite-range, dispersive, and dissipative dipole-dipole interactions mediated by g…
High-fidelity multipartite entanglement creation in non-Hermitian qubits
C. -Y. Liu, C. G. Feyisa, Muhammad S. Hasan +1
Non-Hermitian quantum systems showcase many distinct and intriguing features with no Hermitian counterparts. One of them is the exceptional point which marks the PT (parity and tim…
Robustness of tripartite entangled states in passive PT-symmetric qubits
C. G. Feyisa, Cheng-Yu Liu, Muhammad S. Hasan +3
Non-Hermitian quantum systems have attracted significant interest in recent years due to the presence of unique spectral singularities known as exceptional points (EPs), where eige…
Strongly Confined Atomic Excitation Localization in a Weakly-Driven Atom-Waveguide Interface
Shao-Hung Chung, Wei Chen, H. H. Jen
An atomic array coupled to a photonic crystal waveguide forms a strongly coupled quantum interface, exhibiting various intriguing collective features of quantum dynamics. Here we c…