Two-dimensional Thouless pumping of light in photonic moiré lattices

Peng Wang, Qidong Fu, Ruihan Peng, Yaroslav V. Kartashov, Lluis Torner, Vladimir V. Konotop and Fangwei Ye ()
Additional contact information
Peng Wang: Shanghai Jiao Tong University
Qidong Fu: Shanghai Jiao Tong University
Ruihan Peng: Shanghai Jiao Tong University
Yaroslav V. Kartashov: The Barcelona Institute of Science and Technology
Lluis Torner: The Barcelona Institute of Science and Technology
Vladimir V. Konotop: Universidade de Lisboa
Fangwei Ye: Shanghai Jiao Tong University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract Continuous and quantized transports are profoundly different. The latter is determined by the global rather than local properties of a system, it exhibits unique topological features, and its ubiquitous nature causes its occurrence in many areas of science. Here we report the first observation of fully-two-dimensional Thouless pumping of light by bulk modes in a purpose-designed tilted moiré lattices imprinted in a photorefractive crystal. Pumping in such unconfined system occurs due to the longitudinal adiabatic and periodic modulation of the refractive index. The topological nature of this phenomenon manifests itself in the magnitude and direction of shift of the beam center-of-mass averaged over one pumping cycle. Our experimental results are supported by systematic numerical simulations in the frames of the continuous Schrödinger equation governing propagation of probe light beam in optically-induced photorefractive moiré lattice. Our system affords a powerful platform for the exploration of topological pumping in tunable commensurate and incommensurate geometries.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.nature.com/articles/s41467-022-34394-3 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34394-3

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-34394-3

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().