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Observación de solitones de Floquet en una brecha de banda topológica
Sebabrata Mukherjee1, Mikael C Rechtsman1
1Department of Physics, The Pennsylvania State University, University Park, PA 16802, USA. mukherjeesebabrata@gmail.com mcrworld@psu.edu.
Science (New York, N.Y.)
|May 23, 2020
Resumen
Observamos ondas autoformadas llamadas solitones en un aislante topológico de Floquet fotónico. Estos solitones se movieron en órbitas únicas similares a ciclotrones debido a la topología y la no linealidad del sistema.
Área de la Ciencia:
- La física
- Materiales topológicos
- Óptica no lineal
Sus antecedentes:
- La protección topológica es un fenómeno universal observado en varios sistemas físicos.
- La mayoría de las investigaciones se han centrado en el dominio lineal, descuidando las interacciones entre partículas.
- La no linealidad y la topología no se han estudiado ampliamente juntos en la propagación de ondas.
Objetivo del estudio:
- Observar y caracterizar experimentalmente los solitones en un aislante topológico de Floquet fotónico.
- Investigar la influencia de la topología en la dinámica de solitones.
- Explorar la interacción entre la no linealidad y las propiedades topológicas en los sistemas de ondas.
Principales métodos:
- Utilizó una matriz de guías de onda con variaciones axiales periódicas para crear un aislante topológico de Floquet fotónico.
- Se introdujo la no linealidad a través del efecto Kerr óptico.
- Se ha observado la propagación del solitón y el movimiento orbital.
Principales resultados:
- Se han observado con éxito solitones en el aislante topológico de Floquet fotónico.
- Se demostró que estos solitones exhiben órbitas similares a los ciclotrones.
- El comportamiento observado está vinculado al número de bobinado distinto de cero y las propiedades topológicas del sistema.
Conclusiones:
- La dinámica de Soliton está significativamente influenciada por las propiedades topológicas.
- Este trabajo demuestra un nuevo régimen para los fenómenos topológicos en sistemas no lineales.
- Los hallazgos son aplicables a varios sistemas bosónicos descritos por la ecuación no lineal de Schrödinger.
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