3 papers
quant-ph2026
From Spectral Singularities to Multipartite Entanglement Scaling at Higher-Order Exceptional Points
Chunlai Yang, Shuheng Liu, Xinyao Huang +2
Exceptional points (EPs) are non-Hermitian spectral singularities exhibiting fractional-power responses, yet their implications for multipartite entanglement of interacting quantum…
quant-ph2025
Enhanced response at exceptional points in multi-qubit systems for sensing
Tingting Shi, Vasilii Smirnov, Kaiye Shi +1
Exceptional points featuring enhanced energy response to perturbation hold significant potential in detection and measurement of weak signals. Of particular interest is the existen…
cond-mat.quant-gas2024
Anomalous wave-packet transport on boundaries of Floquet topological systems
Xin-Xin Yang, Kai-Ye Shi, F. Nur Ãnal +1
A two-dimensional periodically driven (Floquet) system with zero winding number in the absence of time-reversal symmetry is usually considered topologically trivial. Here, we study…