Controlled Transport Based on Multiorbital Aharonov-Bohm Photonic Caging

Gabriel Cáceres-Aravena, Diego Guzmán-Silva, Ignacio Salinas, and Rodrigo A. Vicencio
Phys. Rev. Lett. 128, 256602 – Published 23 June 2022
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Abstract

The induction of synthetic magnetic fields on lattice structures allows an effective control of their localization and transport properties. In this Letter, we generate effective π magnetic fluxes on a multiorbital diamond lattice, where first-order (S) and second-order (P) modes effectively interact. We implement a z-scan method on femtosecond-laser-written photonic lattices and experimentally observe Aharonov-Bohm caging for S and P modes, as a consequence of a band transformation and the emergence of a spectrum composed of three degenerated flat bands. As an application, we demonstrate a perfect control of the dynamics, where we translate an input excitation across the lattice in a completely linear and controlled way. Our model, based on a flat band spectrum, allows us to choose the direction of transport depending on the excitation site or input phase.

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  • Received 27 January 2022
  • Accepted 3 June 2022

DOI:https://doi.org/10.1103/PhysRevLett.128.256602

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Gabriel Cáceres-Aravena, Diego Guzmán-Silva, Ignacio Salinas, and Rodrigo A. Vicencio

  • Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Chile and Millennium Institute for Research in Optics—MIRO, Universidad de Chile, Chile

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Issue

Vol. 128, Iss. 25 — 24 June 2022

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