Artificial gauge field switching using orbital angular momentum modes in optical waveguides

Christina Jörg; Gerard Queraltó; Mark Kremer; Gerard Pelegrí; Julian Schulz; Alexander Szameit; Georg von Freymann; Jordi Mompart; Verònica Ahufinger

doi:10.1038/s41377-020-00385-6

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Artificial gauge field switching using orbital angular momentum modes in optical waveguides

Letters

- Artificial gauge field switching using orbital angular momentum modes in optical waveguides
- Artificial gauge field switching using orbital angular momentum modes in optical waveguides
- LSA 2020年9卷第5期页码：1315-1321
- Affiliations：
  
  1.Physics Department and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
  2.Departament de Física, Universitat Auto'noma de Barcelona, E-08193 Bellaterra, Spain
  3.Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
  4.Department of Physics and SUPA, University of Strathclyde, Glasgow G4 0NG, UK
  5.Fraunhofer Institute for Industrial Mathematics ITWM, 67663 Kaiserslautern, Germany
- Author bio：
  
  Gerard Queraltó (gerard.queralto@uab.cat)
- Funds：
- DOI：10.1038/s41377-020-00385-6
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-08-28，
  
  收稿日期：2020-04-14，
  
  修回日期：2020-07-26，
  
  录用日期：2020-08-11
- Accepted：
Scan QR Code
Artificial gauge field switching using orbital angular momentum modes in optical waveguides[J]. LSA, 2020,9(5):1315-1321.

Jörg, C. et al. Artificial gauge field switching using orbital angular momentum modes in optical waveguides. Light: Science & Applications, 9, 1315-1321 (2020).
Artificial gauge field switching using orbital angular momentum modes in optical waveguides[J]. LSA, 2020,9(5):1315-1321. DOI： 10.1038/s41377-020-00385-6.

Jörg, C. et al. Artificial gauge field switching using orbital angular momentum modes in optical waveguides. Light: Science & Applications, 9, 1315-1321 (2020). DOI： 10.1038/s41377-020-00385-6.

摘要

Abstract

The discovery of artificial gauge fields controlling the dynamics of uncharged particles that otherwise elude the influence of standard electromagnetic fields has revolutionised the field of quantum simulation. Hence

developing new techniques to induce these fields is essential to boost quantum simulation of photonic structures. Here

we experimentally demonstrate the generation of an artificial gauge field in a photonic lattice by modifying the topological charge of a light beam

overcoming the need to modify the geometry along the evolution or impose external fields. In particular

we show that an effective magnetic flux naturally appears when a light beam carrying orbital angular momentum is injected into a waveguide lattice with a diamond chain configuration. To demonstrate the existence of this flux

we measure an effect that derives solely from the presence of a magnetic flux

the Aharonov-Bohm caging effect

which is a localisation phenomenon of wavepackets due to destructive interference. Therefore

we prove the possibility of switching on and off artificial gauge fields just by changing the topological charge of the input state

paving the way to accessing different topological regimes in a single structure

which represents an important step forward for optical quantum simulation.

关键词

Keywords

references

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