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June 15, 2015Physical Review Letters633 citationsOpen Access

Observation of Localized States in Lieb Photonic Lattices

RVRodrigo A. VicencioCCCamilo CantillanoLMLuis Morales‐Inostroza

Key Points

  • To experimentally demonstrate compacton-like linear localized states within the continuum of flat-band photonic Lieb lattices.
  • Engineered photonic Lieb lattices designed with three tight-binding bands containing a perfectly flat band.
  • Performed continuous numerical simulations alongside direct optical experiments to validate discrete theoretical predictions.
  • Provided direct experimental observation of compacton-like linear localized states in flat-band photonic lattices.
  • Demonstrated robust, diffractionless confinement and guidance of light across the engineered lattice structure.

Abstract

We present the first experimental demonstration of a new type of localized state in the continuum, namely, compacton-like linear states in flat-band lattices. To this end, we employ photonic Lieb lattices, which exhibit three tight-binding bands, with one being perfectly flat. Discrete predictions are confirmed by realistic continuous numerical simulations as well as by direct experiments. Our results could be of great importance for fundamental physics as well as for various applications where light needs to be conducted in a diffractionless and localized manner over long distances.

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Cite This Study

Vicencio et al. (2015) studied this question.

synapsesocial.com/papers/69dcca15c099bcfdbb133aa9https://doi.org/10.1103/physrevlett.114.245503
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