Gap-dependent mass of a photon in a photonic topological insulator
| Autor: | Sergei Sergeenkov, Marcelo da Silva Vieira, Claudio Furtado |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Phase difference Quantum Physics Photon Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics business.industry Spectrum (functional analysis) FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Light propagation Topological insulator Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Photonics Quantum Physics (quant-ph) 010306 general physics 0210 nano-technology Electronic band structure business |
| Zdroj: | Physical Review A. 96 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.96.013852 |
| Popis: | By using an analogy with axionic like systems, we study light propagation in 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 $\gamma=\theta_2-\theta_1$ a finite gap $\delta \propto\gamma^2$ opens in the spectrum which is equivalent to appearance of nonzero effective photon mass $m^{*}(\delta)\propto \frac{\sqrt{\delta}}{\delta +2}$. Comment: 8 pages, 5 figures, revised version accepted in PRA |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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