Gap-dependent mass of a photon in a photonic topological insulator

Gap-dependent mass of a photon in a photonic topological insulator By using an analogy with axioniclike systems, we study light propagation in a periodic photonic topological insulator (PTI). The main result of this paper is an explicit expression for the PTI band structure. More specifically, it was found that for nonzero values of the topological phase difference γ=θ2−θ1 a finite gap δ∝γ2 opens in the spectrum which is equivalent to the appearance of nonzero effective photon mass m*(δ)∝δδ+2. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Gap-dependent mass of a photon in a photonic topological insulator

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Gap-dependent mass of a photon in a photonic topological insulator

Abstract

By using an analogy with axioniclike systems, we study light propagation in a periodic photonic topological insulator (PTI). The main result of this paper is an explicit expression for the PTI band structure. More specifically, it was found that for nonzero values of the topological phase difference γ=θ2−θ1 a finite gap δ∝γ2 opens in the spectrum which is equivalent to the appearance of nonzero effective photon mass m*(δ)∝δδ+2.
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Publisher
American Physical Society (APS)
Copyright
Copyright © ©2017 American Physical Society
ISSN
1050-2947
eISSN
1094-1622
D.O.I.
10.1103/PhysRevA.96.013852
Publisher site
See Article on Publisher Site

Abstract

By using an analogy with axioniclike systems, we study light propagation in a periodic photonic topological insulator (PTI). The main result of this paper is an explicit expression for the PTI band structure. More specifically, it was found that for nonzero values of the topological phase difference γ=θ2−θ1 a finite gap δ∝γ2 opens in the spectrum which is equivalent to the appearance of nonzero effective photon mass m*(δ)∝δδ+2.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Jul 26, 2017

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