title: Demonstration of flat-band image transmission in optically induced Lieb photonic lattices.
abstract: We present a simple, yet effective, approach for optical induction of Lieb photonic lattices, which typically rely on the femtosecond laser writing technique. Such lattices are established by judiciously overlapping two sublattices (an "egg-crate" lattice and a square lattice) with different periodicities through a self-defocusing photorefractive medium. Furthermore, taking advantage of the superposition of localized flat-band states inherent in the Lieb lattices, we demonstrate distortion-free image transmission in such two-dimensional perovskite-like photonic structures. Our experimental observations find good agreement with numerical simulations.
authors.forename: Shiqiang
authors.initials: S
authors.lastname: Xia
authors.forename: Yi
authors.initials: Y
authors.lastname: Hu
authors.forename: Daohong
authors.initials: D
authors.lastname: Song
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Zong
authors.forename: Liqin
authors.initials: L
authors.lastname: Tang
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Chen