Topological modes in one-dimensional solids and photonic crystals

被引:7
|
作者
Atherton, Timothy J. [1 ]
Butler, Celia A. M. [2 ]
Taylor, Melita C. [2 ]
Hooper, Ian R. [2 ]
Hibbins, Alastair P. [2 ]
Sambles, J. Roy [2 ]
Mathur, Harsh [2 ]
机构
[1] Tufts Univ, Dept Phys & Astron, 574 Boston Ave, Medford, MA 02155 USA
[2] Univ Exeter, Dept Phys & Astron, Electromagnet & Acoust Mat Grp, Stocker Rd, Exeter EX4 4QL, Devon, England
基金
英国工程与自然科学研究理事会;
关键词
PHASE; INSULATORS;
D O I
10.1103/PhysRevB.93.125106
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
It is shown theoretically that a one-dimensional crystal with time-reversal and particle-hole symmetries is characterized by a topological invariant that predicts the existence or otherwise of edge states. This is confirmed experimentally through the construction and simulation of a photonic crystal analog in the microwave regime. It is shown that the edge mode couples to modes external to the photonic crystal via a Fano resonance.
引用
收藏
页数:11
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