Observation of a Localized Flat-Band State in a Photonic Lieb Lattice
Sebabrata Mukherjee,Alexander Spracklen,Debaditya Choudhury,Nathan Goldman,Nathan Goldman,Patrik Öhberg,Erika Andersson,Robert R. Thomson +7 more
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TLDR
The first experimental realization of a dispersionless state is demonstrated, in a photonic Lieb lattice formed by an array of optical waveguides, which opens an exciting door towards quantum simulation of flat-band models in a highly controllable environment.Abstract:
We demonstrate the first experimental realization of a dispersionless state, in a photonic Lieb lattice formed by an array of optical waveguides. This engineered lattice supports three energy bands, including a perfectly flat middle band with an infinite effective mass. We analyze, both experimentally and theoretically, the evolution of well-prepared flat-band states, and show their remarkable robustness, even in the presence of disorder. The realization of flat-band states in photonic lattices opens an exciting door towards quantum simulation of flat-band models in a highly controllable environment.read more
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Bound states in the continuum
TL;DR: Bound states in the continuum (BICs) are waves that remain localized even though they coexist with a continuous spectrum of radiating waves that can carry energy away.
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Experimental observation of anomalous topological edge modes in a slowly driven photonic lattice.
Sebabrata Mukherjee,Alexander Spracklen,Manuel Valiente,Erika Andersson,Patrik Öhberg,Nathan Goldman,Robert R. Thomson +6 more
TL;DR: This work demonstrates the experimental observation of anomalous topological edge modes in a 2D photonic lattice, where these propagating edge states are shown to coexist with a quasi-localized bulk.
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Corner states of light in photonic waveguides
Ashraf Mohamed El Hassan,Flore K. Kunst,Alexander Moritz,G. Andler,Emil J. Bergholtz,Mohamed Bourennane +5 more
TL;DR: In this article, the experimental realization of novel corner states made out of visible light in three-dimensional photonic structures inscribed in glass samples using femtosecond laser technology is reported.
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Artificial flat band systems: from lattice models to experiments
TL;DR: In this paper, the authors review the design and implementation of flat bands and chart future directions of this exciting field, and present a survey of flat-band applications in a variety of settings, from electronic systems to ultracold atomic gases and photonic devices.
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