Quantum anomalous Hall-quantum spin Hall effect in optical superlattices

被引：11

作者：

Shang, Ce ^{[1
,2
]}

Chen, Xianfeng ^{[1
,2
]}

Luo, Weidong ^{[3
]}

Ye, Fangwei ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Sch Phys & Astron, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA, Key Lab Laser Plasma, Shanghai 200240, Peoples R China

[3] Shanghai Jiao Tong Univ, Key Lab Artificial Struct & Quantum Control, Shanghai 200240, Peoples R China

来源：

OPTICS LETTERS | 2018年 / 43卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1364/OL.43.000275

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider the topological characteristics of the spinorbital coupling particles loaded in one-dimensional (1D) optical superlattices subject to the Zeeman field. The phase shift of the superlattice provides a virtual dimension which allows us to simulate two-dimensional topological phases with a physically 1D system. The system possesses a variety of quantum phase transitions over a large parametric space and two important topological phases, namely, quantum anomalous Hall (QAH) and quantum spin Hall (QSH) phases are found to coexist in the system, but they reside in different bandgaps. This new category of gap-dependent QAH- QSH insulator paves the way for the possible observation of the coexistence of QSH and QAH effects at one platform. (c) 2018 Optical Society of America

引用

页码：275 / 278

页数：4

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