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Pompado no lineal cuantizado
Marius Jürgensen1, Sebabrata Mukherjee2, Mikael C Rechtsman3
1Department of Physics, The Pennsylvania State University, University Park, PA, USA. marius@psu.edu.
Nature
|August 5, 2021
Resumen
Demostramos un nuevo tipo de fotónica topológica, llamado bombeo no lineal Thouless cuantizado. Este método utiliza las interacciones luz-materia para controlar el transporte de ondas, ofreciendo un nuevo enfoque más allá de los sistemas topológicos tradicionales.
Área de la Ciencia:
- Física topológica
- Fotónica no lineal
- El transporte cuántico
Sus antecedentes:
- La protección topológica del transporte de ondas, inspirada en el efecto Hall cuántico, se aplica a varias plataformas como la fotónica.
- La no linealidad y las interacciones entre partículas alteran significativamente el comportamiento del sistema en comparación con el caso electrónico.
- El bombeo Thouless tradicional se basa en bandas uniformemente llenas para el transporte cuantizado.
Objetivo del estudio:
- Proponer teóricamente y demostrar experimentalmente el bombeo no lineal Thouless cuantizado de fotones.
- Investigar el transporte topológico en sistemas con bandas no uniformemente ocupadas.
- Explorar el papel de la no linealidad en la inducción de fenómenos topológicos.
Principales métodos:
- Propuesta teórica de un modelo cuántico no lineal de bomba Thouless para fotones.
- Demostración experimental utilizando un sistema fotónico con una banda no uniformemente ocupada.
- Utilizando la formación de solitones y las bifurcaciones de ruptura de simetría para la cuantización.
Principales resultados:
- Logrado el bombeo no lineal Thouless cuantizado de fotones en un sistema con una ocupación de banda no uniforme.
- Demostró que la no linealidad puede inducir el transporte cuantizado a través de la formación de solitones.
- Identificó un nuevo mecanismo de cuantización distinto del tradicional bombeo Thouless.
Conclusiones:
- La no linealidad y las interacciones entre partículas pueden conducir al transporte cuantizado y al comportamiento topológico.
- Este trabajo presenta un nuevo paradigma para los fenómenos topológicos en los sistemas fotónicos.
- Los hallazgos abren caminos para nuevas aplicaciones en fotónica topológica.
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