Thouless pumping in disordered photonic systems

Alexander Cerjan; Mohan Wang; Sheng Huang; Kevin P. Chen; Mikael C. Rechtsman

doi:10.1038/s41377-020-00408-2

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Thouless pumping in disordered photonic systems

Original Articles

- Thouless pumping in disordered photonic systems
- Light: Science & Applications Vol. 9, Issue 6, Pages: 1823-1829(2020)
- Affiliations：
  
  1.Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA
  2.Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Author bio：
  
  Alexander Cerjan (awc19@psu.edu)
- Funds：
- DOI：10.1038/s41377-020-00408-2
  CLC：
- Published：2020，
  
  Published Online：19 October 2020，
  
  Received：09 April 2020，
  
  Revised：25 August 2020，
  
  Accepted：09 September 2020
- Accepted：
Scan QR Code
Cerjan, A. et al. Thouless pumping in disordered photonic systems. Light: Science & Applications, 9, 1823-1829 (2020).
DOI：

Cerjan, A. et al. Thouless pumping in disordered photonic systems. Light: Science & Applications, 9, 1823-1829 (2020). DOI： 10.1038/s41377-020-00408-2.

摘要

Abstract

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.

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Keywords

references

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