Multimode One-Way Waveguides of Large Chern Numbers

被引：265

作者：

Skirlo, Scott A. ^{[1
]}

Lu, Ling ^{[1
]}

Soljacic, Marin ^{[1
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 11期

关键词：

EDGE MODE;

D O I：

10.1103/PhysRevLett.113.113904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Current experimental realizations of the quantum anomalous Hall phase in both electronic and photonic systems have been limited to a Chern number of one. In photonics, this corresponds to a single-mode one-way edge waveguide. Here, we predict quantum anomalous Hall phases in photonic crystals with large Chern numbers of 2, 3, and 4. These new topological phases were found by simultaneously gapping multiple Dirac and quadratic points. We demonstrate a continuously tunable power splitter as a possible application of multimode one-way waveguides. All our findings are readily realizable at microwave frequencies.

引用

页数：5