Visual observation of photonic Floquet–Bloch oscillations

Zhen Zhang; Yuan Li; Xiankai Sun; Xuewen Shu

doi:10.1038/s41377-024-01419-z

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Visual observation of photonic Floquet–Bloch oscillations

Original Articles

- Visual observation of photonic Floquet–Bloch oscillations
- Light: Science & Applications Vol. 13, Issue 5, Pages: 921-929(2024)
- Affiliations：
  
  1.Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
  2.Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
- Author bio：
  
  Xiankai Sun (xksun@cuhk.edu.hk)
  Xuewen Shu (xshu@hust.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01419-z
  CLC：
- Received：31 August 2023，
  
  Revised：2024-01-27，
  
  Accepted：07 March 2024，
  
  Published Online：28 April 2024，
  
  Published：31 May 2024
- Accepted：
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Zhang, Z. et al. Visual observation of photonic Floquet–Bloch oscillations.,Light: Science & Applications, 13, 921-929 (2024).
DOI：

Zhang, Z. et al. Visual observation of photonic Floquet–Bloch oscillations.,Light: Science & Applications, 13, 921-929 (2024). DOI： 10.1038/s41377-024-01419-z.

摘要

Abstract

Bloch oscillations (BOs)

an important transport phenomenon

have been studied extensively in static systems but remain mysterious in Floquet systems. Here

by harnessing notions from photonic analogy

we propose a generalization of the existing BOs in photonic Floquet lattices

namely the "photonic Floquet–Bloch oscillations"

which refer to rescaled photonic Bloch oscillations with a period of extended least common multiple of the modulation period and the Bloch oscillation period. Next

we report the first visual observation of such photonic Floquet–Bloch oscillations (FBOs) by employing waveguide fluorescence microscopy. Most significantly

the FBOs surpass the existing BOs in Floquet systems and exhibit exotic properties on their own

including fractal spectrum and fractional Floquet tunneling. This new transport mechanism offers an intriguing method of wave manipulation that may contribute to rapidly developing fields in photonics

condensed matter physics

and quantum physics.

关键词

Keywords

references

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