What is it about?

We demonstrate experimentally the transference of energy from one edge into the other on a photonic lattice. We use the topological properties of the system to observe a more robust transfer, in comparison with conventional lattice systems.

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Why is it important?

While the light is traveling across a given system, the possibility of scattering effects due to any inhomogeneity at the bulk is very high, causing that the information could be lost. In our work, we experimentally demonstrated that a special (topological) material possessing very localized states at the edges could be used to offer a more robust solution without the need of interacting strongly with the bulk and, therefore, allowing the energy to be transferred, from one edge into the other, with a higher fidelity.


From my point of view, we have demonstrated a long distance transportation of light from one edge into the other, interacting only weakly with the lattice bulk and, therefore, avoiding to interact strongly with possible defects. This could open the route for more robust communication systems based in our observation, as well as to increase the possibilities for any wave system to demonstrate similar findings, even for cold atoms or sound waves. The scale of the transportation is still something that has to be improved considering, for example, other lattice configurations or new/extra physical mechanisms.

Rodrigo Vicencio
Universidad de Chile

Read the Original

This page is a summary of: Edge-to-edge topological spectral transfer in diamond photonic lattices, APL Photonics, August 2023, American Institute of Physics,
DOI: 10.1063/5.0153770.
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