Moiré Fringe Induced Gauge Field in Photonics

Wang，Wenhui1; Gao，Wenlong1; Chen，Xiaodong2; Shi，Fulong2; Li，Guixin3; Dong，Jianwen2; Xiang，Yuanjiang4; Zhang，Shuang1,5,6

2020-11-13

10.1103/PhysRevLett.125.203901

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

We realize moiré fringe induced gauge field in a double-layer photonic honeycomb metacrystal with mismatched lattice constants. Benefitting from the generated strong effective gauge field, we report direct measurement of the band diagrams of both Landau level flat bands and intermagnetic-domain edge states. Importantly, we observe the correlation between the momentum and orbital position of the Landau modes, serving as an evidence of the noncommuteness between orthogonal components of the momentum. Without complicated time driving mechanics and careful site-by-site engineering, moiré superlattices could emerge as a powerful means to generate effective gauge fields for photonics benefiting from its simplicity and reconfigurability, which can be applied to nonlinearity enhancement and lasing applications at optical frequencies.

SCI ; EI

英语

其他

European Research Council[734578 (D-SPA)] ; National Natural Science Foundation of China[11874269][11761161002] ; Natural Science Foundation of Guangdong Province[2018B030308005]

Physics

Physics, Multidisciplinary

WOS:000589182300006

AMER PHYSICAL SOC

20204709507307

Gages ; Lattice constants ; Band diagram

Light/Optics:741.1 ; Solid State Physics:933 ; Crystal Lattice:933.1.1 ; Special Purpose Instruments:943.3

PHYSICS

2-s2.0-85096172201

Scopus

1.School of Physics and Astronomy,University of Birmingham,Birmingham,B15 2TT,United Kingdom
2.School of Physics,State Key Laboratory of Optoelectronic Materials and Technologies,Sun Yat-sen University,Guangzhou,510275,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.School of Physics and Electronics,Hunan University,Changsha,410082,China
5.Department of Physics,University of Hong Kong,Hong Kong
6.Department of Electrical and Electronic Engineering,University of Hong Kong,Hong Kong

Wang，Wenhui,Gao，Wenlong,Chen，Xiaodong,et al. Moiré Fringe Induced Gauge Field in Photonics[J]. PHYSICAL REVIEW LETTERS,2020,125(20).

Wang，Wenhui.,Gao，Wenlong.,Chen，Xiaodong.,Shi，Fulong.,Li，Guixin.,...&Zhang，Shuang.(2020).Moiré Fringe Induced Gauge Field in Photonics.PHYSICAL REVIEW LETTERS,125(20).

Wang，Wenhui,et al."Moiré Fringe Induced Gauge Field in Photonics".PHYSICAL REVIEW LETTERS 125.20(2020).