Edge States and Topological Phase Transitions in Chains of Dielectric Nanoparticles

Sergey Kruk; Alexey Slobozhanyuk; Denitza Denkova; Alexander Poddubny; Ivan Kravchenko; Andrey Miroshnichenko; Dragomir Neshev; Yuri Kivshar

doi:10.1002/smll.201603190

Edge States and Topological Phase Transitions in Chains of Dielectric Nanoparticles

Small. 2017 Mar;13(11). doi: 10.1002/smll.201603190. Epub 2017 Jan 12.

Authors

Sergey Kruk¹, Alexey Slobozhanyuk^{1

2}, Denitza Denkova³, Alexander Poddubny^{2

4}, Ivan Kravchenko⁵, Andrey Miroshnichenko¹, Dragomir Neshev¹, Yuri Kivshar¹

Affiliations

¹ Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 2601, Australia.
² The Metamaterials Laboratory, ITMO University, St. Petersburg, 197101, Russia.
³ Center for Nanoscale BioPhotonics, Macquarie University, Sydney, NSW 2109, Australia.
⁴ Ioffe Institute, St. Petersburg, 194021, Russia.
⁵ Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.

PMID: 28079975
DOI: 10.1002/smll.201603190

Abstract

Recently introduced field of topological photonics aims to explore the concepts of topological insulators for novel phenomena in optics. Here polymeric chains of subwavelength silicon nanodisks are studied and it is demonstrated that these chains can support two types of topological edge modes based on magnetic and electric Mie resonances, and their topological properties are fully dictated by the spatial arrangement of the nanoparticles in the chain. It is observed experimentally and described how theoretically topological phase transitions at the nanoscale define a change from trivial to nontrivial topological states when the edge mode is excited.

Keywords: edge states; nanofabrication; nanophotonics; near-field microscopy; topological photonics.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.