李伯光子晶格中局域态的观测

Observation of Localized States in Lieb Photonic Lattices.

作者信息

Vicencio Rodrigo A, Cantillano Camilo, Morales-Inostroza Luis, Real Bastián, Mejía-Cortés Cristian, Weimann Steffen, Szameit Alexander, Molina Mario I

机构信息

Departamento de Física, MSI-Nucleus on Advanced Optics, and Center for Optics and Photonics (CEFOP), Facultad de Ciencias, Universidad de Chile, Santiago 7800003, Chile.

Institute of Applied Physics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany.

出版信息

Phys Rev Lett. 2015 Jun 19;114(24):245503. doi: 10.1103/PhysRevLett.114.245503. Epub 2015 Jun 15.

DOI:10.1103/PhysRevLett.114.245503

PMID:26196986

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.

摘要

我们首次通过实验证明了连续统中一种新型的局域态，即平带晶格中类紧子线性态。为此，我们采用了光子利布晶格，它展现出三个紧束缚能带，其中一个是完全平坦的。离散预测通过实际的连续数值模拟以及直接实验得到了证实。我们的结果对于基础物理学以及各种需要光以无衍射且局域的方式进行长距离传导的应用可能具有极其重要的意义。