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Localization behavior in a Hermitian and non-Hermitian Raman lattice
Entong Zhao, Yu-Jun Liu, Ka Kwan Pak, Peng Ren, Mengbo Guo, Chengdong He, Gyu-Boong Jo
https://arxiv.org/abs/2505.22319

Localization behavior in a Hermitian and non-Hermitian Raman lattice
We introduce a flexible Raman lattice system for alakaline-earth like atoms to investigate localization behaviors in a quasi-periodic lattice with controllable non-Hermiticity. We demonstrate that critical phases and mobility edges can arise by adjusting spin-dependence of the incommensurate potentials in the Hermitian regime. With non-Hermiticity introduced by spin-selective atom loss, we find the localization behaviour in this system can be suppressed by dissipation. Our work provides insight…