Localization behavior in a Hermitian and non-Hermitian Raman lattice
Phys. Rev. A 113, 053310 – Published 12 May, 2026
DOI: https://doi.org/10.1103/76t2-1tlx
Abstract
We propose a flexible Raman lattice system for alkaline-earth-like atoms to theoretically investigate localization behaviors in a quasiperiodic lattice with controllable non-Hermiticity. Our analysis demonstrates that critical phases and mobility edges can arise by adjusting the spin dependence of the incommensurate potentials in the Hermitian regime. With non-Hermiticity introduced by spin-selective atom loss, our calculations reveal that critical localization behavior in this system can be suppressed by dissipation. Our work provides insights into the interplay between quasiperiodicity and non-Hermitian physics, offering a different perspective on localization phenomena.
