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Observación del arco de Fermi a granel y la media carga de polarización desde puntos excepcionales emparejados
Hengyun Zhou1, Chao Peng1,2, Yoseob Yoon3
1Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Science (New York, N.Y.)
|January 13, 2018
Resumen
Descubrimos un arco de Fermi masivo y cargas topológicas de medio entero en sistemas fotónicos abiertos debido a pérdidas no hermetianas. Esto abre nuevas vías en fotónica topológica y física no hermética.
Área de la Ciencia:
- Fotónica topológica
- Física no hermética
- Óptica singular
Sus antecedentes:
- Los conceptos de topología tienen éxito en sistemas cerrados.
- Los sistemas abiertos o disipativos ofrecen propiedades más ricas.
- La física no hermética explora sistemas con ganancias o pérdidas.
Objetivo del estudio:
- Proponer teóricamente y demostrar experimentalmente un arco de Fermi masivo en un sistema abierto.
- Investigar las propiedades topológicas derivadas de las pérdidas radiativas no herméticas.
- Descubrir nuevos fenómenos topológicos en sistemas fotónicos abiertos.
Principales métodos:
- Propuesta teórica de un arco de Fermi a granel en placas de cristal fotónico.
- Demostración experimental con pérdidas radiactivas no herméticas.
- Análisis de la polarización de la radiación de campo lejano y de los puntos excepcionales.
Principales resultados:
- Demostración de un arco de Fermi a granel originado por pérdidas radiativas no herméticas.
- Descubrimiento de cargas topológicas de medio entero en la polarización de radiación de campo lejano.
- Confirmación de que los fenómenos provienen de puntos excepcionales no herméticos.
Conclusiones:
- El estudio conecta la fotónica topológica, la física no hermética y la óptica singular.
- Se proporciona un marco para explorar sistemas topológicos no herméticos complejos.
- Las pérdidas no herméticas en sistemas abiertos conducen a características topológicas únicas.
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