Tunable dephasing-induced non-Hermitian jumps in quasiperiodic lattices
Phys. Rev. A 114, 043302 – Published 9 October, 2026
DOI: https://doi.org/10.1103/zcsn-6p38
Abstract
We investigated the dynamical properties of one-dimensional quasiperiodic lattices under dephasing modulation. The results show that by manipulating the dephasing period, the corresponding dynamics will shift from ballistic transport to non-Hermitian jumps. Non-Hermitian jumps in quasiperiodic lattices can be quantitatively predicted and systematically tuned through the dephasing period and the global parameters of the quasiperiodic potential. Additionally, through the two-dominant-mode approximation method, we derived an analytical expression for the core physical quantity (the derivative of the average optical power), thereby successfully reducing the substantial errors inherent in the single-dominant-mode formula near the jump critical point. This work provides a feasible experimental roadmap for further research on non-Hermitian jumps.
