Cargando…
Thouless pumping in disordered photonic systems
Thouless charge pumping protocols provide a route for one-dimensional systems to realize topological transport. Here, using arrays of evanescently coupled optical waveguides, we experimentally demonstrate bulk Thouless pumping in the presence of disorder. The degree of pumping is quite tolerant to s...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7572498/ https://www.ncbi.nlm.nih.gov/pubmed/33088495 http://dx.doi.org/10.1038/s41377-020-00408-2 |
_version_ | 1783597345173143552 |
---|---|
author | Cerjan, Alexander Wang, Mohan Huang, Sheng Chen, Kevin P. Rechtsman, Mikael C. |
author_facet | Cerjan, Alexander Wang, Mohan Huang, Sheng Chen, Kevin P. Rechtsman, Mikael C. |
author_sort | Cerjan, Alexander |
collection | PubMed |
description | Thouless charge pumping protocols provide a route for one-dimensional systems to realize topological transport. Here, using arrays of evanescently coupled optical waveguides, we experimentally demonstrate bulk Thouless pumping in the presence of disorder. The degree of pumping is quite tolerant to significant deviations from adiabaticity as well as the addition of system disorder until the disorder is sufficiently strong to reduce the bulk mobility gap of the system to be on the scale of the modulation frequency of the system. Moreover, we show that this approach realizes near-full-unit-cell transport per pump cycle for a physically relevant class of localized initial system excitations. Thus, temporally pumped systems can potentially be used as a design principle for a new class of modulated slow-light devices that are resistant to system disorder. |
format | Online Article Text |
id | pubmed-7572498 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-75724982020-10-20 Thouless pumping in disordered photonic systems Cerjan, Alexander Wang, Mohan Huang, Sheng Chen, Kevin P. Rechtsman, Mikael C. Light Sci Appl Article Thouless charge pumping protocols provide a route for one-dimensional systems to realize topological transport. Here, using arrays of evanescently coupled optical waveguides, we experimentally demonstrate bulk Thouless pumping in the presence of disorder. The degree of pumping is quite tolerant to significant deviations from adiabaticity as well as the addition of system disorder until the disorder is sufficiently strong to reduce the bulk mobility gap of the system to be on the scale of the modulation frequency of the system. Moreover, we show that this approach realizes near-full-unit-cell transport per pump cycle for a physically relevant class of localized initial system excitations. Thus, temporally pumped systems can potentially be used as a design principle for a new class of modulated slow-light devices that are resistant to system disorder. Nature Publishing Group UK 2020-10-19 /pmc/articles/PMC7572498/ /pubmed/33088495 http://dx.doi.org/10.1038/s41377-020-00408-2 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Cerjan, Alexander Wang, Mohan Huang, Sheng Chen, Kevin P. Rechtsman, Mikael C. Thouless pumping in disordered photonic systems |
title | Thouless pumping in disordered photonic systems |
title_full | Thouless pumping in disordered photonic systems |
title_fullStr | Thouless pumping in disordered photonic systems |
title_full_unstemmed | Thouless pumping in disordered photonic systems |
title_short | Thouless pumping in disordered photonic systems |
title_sort | thouless pumping in disordered photonic systems |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7572498/ https://www.ncbi.nlm.nih.gov/pubmed/33088495 http://dx.doi.org/10.1038/s41377-020-00408-2 |
work_keys_str_mv | AT cerjanalexander thoulesspumpingindisorderedphotonicsystems AT wangmohan thoulesspumpingindisorderedphotonicsystems AT huangsheng thoulesspumpingindisorderedphotonicsystems AT chenkevinp thoulesspumpingindisorderedphotonicsystems AT rechtsmanmikaelc thoulesspumpingindisorderedphotonicsystems |