Localization and delocalization of light in photonic moire lattices

doi:10.1038/s41586-019-1851-6

GSTDTAP > 地球科学

DOI	10.1038/s41586-019-1851-6
	Localization and delocalization of light in photonic moire lattices
	Wang, Peng 1,2; Zheng, Yuanlin 1,2; Chen, Xianfeng 1,2; Huang, Changming 3; Kartashov, Yaroslav V.4,5; Torner, Lluis 4,6; Konotop, Vladimir V.7,8; Ye, Fangwei 1,2
	2020-05-01
发表期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2020
卷号	577 期号:7788 页码:42-+
文章类型	Article
语种	英语
国家	Peoples R China; Spain; Russia; Portugal
英文关键词	Moire lattices consist of two superimposed identical periodic structures with a relative rotation angle. Moire lattices have several applications in everyday life, including artistic design, the textile industry, architecture, image processing, metrology and interferometry. For scientific studies, they have been produced using coupled graphene-hexagonal boron nitride monolayers(1,2), graphene-graphene layers(3,4) and graphene quasicrystals on a silicon carbide surface(5). The recent surge of interest in moire lattices arises from the possibility of exploring many salient physical phenomena in such systems examples include commensurable-incommensurable transitions and topological defects(2), the emergence of insulating states owing to band flattening(3,6), unconventional superconductivity(4) controlled by the rotation angle(7,8), the quantum Hall effect(9), the realization of non-Abelian gauge potentials(10) and the appearance of quasicrystals at special rotation angles(11). A fundamental question that remains unexplored concerns the evolution of waves in the potentials defined by moire lattices. Here we experimentally create two-dimensional photonic moire lattices, which-unlike their material counterparts-have readily controllable parameters and symmetry, allowing us to explore transitions between structures with fundamentally different geometries (periodic, general aperiodic and quasicrystal). We observe localization of light in deterministic linear lattices that is based on flatband physics(6), in contrast to previous schemes based on light diffusion in optical quasicrystals(12), where disorder is required(13) for the onset of Anderson localization(14) (that is, wave localization in random media). Using commensurable and incommensurable moire patterns, we experimentally demonstrate the twodimensional localization-delocalization transition of light. Moire lattices may feature an almost arbitrary geometry that is consistent with the crystallographic symmetry groups of the sublattices, and therefore afford a powerful tool for controlling the properties of light patterns and exploring the physics of periodic-aperiodic phase transitions and two-dimensional wavepacket phenomena relevant to several areas of science, including optics, acoustics, condensed matter and atomic physics.
领域	地球科学 ; 气候变化 ; 资源环境
收录类别	SCI-E
WOS记录号	WOS:000505617400023
WOS关键词	ANDERSON LOCALIZATION ; MOBILITY EDGE ; GRAPHENE ; TRANSITION ; TRANSPORT ; WAVE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/281092
专题	地球科学资源环境科学气候变化
作者单位	1.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai, Peoples R China; 2.Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai, Peoples R China; 3.Changzhi Univ, Dept Elect Informat & Phys, Changzhi, Shanxi, Peoples R China; 4.Barcelona Inst Sci & Technol, ICFO Inst Ciencies Foton, Castelldefels, Spain; 5.Russian Acad Sci, Inst Spect, Troitsk, Russia; 6.Univ Politecn Cataluna, Barcelona, Spain; 7.Univ Lisbon, Dept Fis, Fac Ciencias, Lisbon, Portugal; 8.Univ Lisbon, Ctr Fis Teor & Computac, Fac Ciencias, Lisbon, Portugal
推荐引用方式 GB/T 7714	Wang, Peng,Zheng, Yuanlin,Chen, Xianfeng,et al. Localization and delocalization of light in photonic moire lattices[J]. NATURE,2020,577(7788):42-+.
APA	Wang, Peng.,Zheng, Yuanlin.,Chen, Xianfeng.,Huang, Changming.,Kartashov, Yaroslav V..,...&Ye, Fangwei.(2020).Localization and delocalization of light in photonic moire lattices.NATURE,577(7788),42-+.
MLA	Wang, Peng,et al."Localization and delocalization of light in photonic moire lattices".NATURE 577.7788(2020):42-+.