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  • Letter
  • Open Access

Observation of optical tunneling inhibition by a parabolic potential in twisted photonic lattices

Weijie Liu, Bin Zhang, Bo Wu, Lei Wang, and Feng Chen*

  • School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China

  • *drfchen@sdu.edu.cn
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Phys. Rev. Research 4, L012043 – Published 31 March, 2022

DOI: https://doi.org/10.1103/PhysRevResearch.4.L012043

Abstract

Quantum tunneling is considered the cornerstone of many physical processes. So far, its evolution over time, especially under an external field superimposed on the periodic potential field, has not been directly observed experimentally due to the harsh requirements and extremely short time scale. In this paper, we fabricate twisted photonic lattices consisting of three-dimensional waveguide arrays and experimentally illustrate the optical tunneling process under the parabolic potential field through the photonic route. Optical tunneling inhibition is observed experimentally, and the reduced time required to achieve the maximum transfer of waveguides indicates the inhibition can be modulated by the parabolic potential. This provides a reliable means for subsequent experimental study of quantum tunneling under complicated external potential field.

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Phys. Rev. Research 4, L012043– Published 31 March, 2022
  • Received 5 August 2021
  • Accepted 19 March 2022
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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