title: Observation of Localized States in Lieb Photonic Lattices.
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.
authors.affiliation: Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago 7800003, Chile.
authors.forename: Rodrigo A
authors.initials: RA
authors.lastname: Vicencio
authors.affiliation: Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago 7800003, Chile.
authors.forename: Camilo
authors.initials: C
authors.lastname: Cantillano
authors.affiliation: Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago 7800003, Chile.
authors.forename: Luis
authors.initials: L
authors.lastname: Morales-Inostroza
authors.affiliation: Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago 7800003, Chile.
authors.forename: Bastián
authors.initials: B
authors.lastname: Real
authors.affiliation: Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago 7800003, Chile.
authors.forename: Cristian
authors.initials: C
authors.lastname: Mejía-Cortés
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: Steffen
authors.initials: S
authors.lastname: Weimann
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Szameit
authors.affiliation: Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago 7800003, Chile.
authors.forename: Mario I
authors.initials: MI
authors.lastname: Molina