Related papers: Localization behavior in a Hermitian and non-Hermitian Raman lattice

Localization behavior in a Hermitian and non-Hermitian Raman lattice

URL: http://arxiv.org/abs/2505.22319v1
Date: Wed, 28 May 2025 13:04:00 GMT
Title: Localization behavior in a Hermitian and non-Hermitian Raman lattice
Authors: Entong Zhao, Yu-Jun Liu, Ka Kwan Pak, Peng Ren, Mengbo Guo, Chengdong He, Gyu-Boong Jo,
Abstract summary: We introduce a flexible Raman lattice system for alakaline-earth like atoms to investigate localization behaviors.<n>We demonstrate that critical phases and mobility edges can arise by adjusting spin-dependence of the incommensurate potentials in the Hermitian regime.<n>With non-Hermiticity introduced by spin-selective atom loss, we find the localization behaviour in this system can be suppressed by dissipation.
Score: 1.4514037931268404
License: http://creativecommons.org/licenses/by/4.0/
Abstract: 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 insights into interplay between quasi-periodicity and non-Hermitian physics, offering a new perspective on localization phenomena.

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