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Fonónica quiral no hermética mediante apretamiento inducido optomecánicamente
Javier Del Pino1,2, Jesse J Slim3, Ewold Verhagen4
1Center for Nanophotonics, AMOLF, Amsterdam, the Netherlands. jdelpino@phys.ethz.ch.
Nature
|June 1, 2022
Resumen
Los investigadores crearon estados fonónicos quirales rompiendo la simetría de reversión del tiempo y utilizando dinámicas no herméticas en sistemas nano-optomecánicos. Esto permite el flujo de energía único y los efectos de Aharonov-Bohm en los resonadores mecánicos.
Área de la Ciencia:
- La física cuántica
- Física de la materia condensada
- Optomecánica
Sus antecedentes:
- La quiralidad en los sistemas físicos conduce a flujos y respuestas de energía únicas, como el efecto Aharonov-Bohm.
- Combinar la quiralidad con la hermiticidad rota es un área creciente para explorar nuevas fases topológicas.
- La ruptura de simetría y la dinámica no hermética son conceptos clave en la física moderna.
Objetivo del estudio:
- Investigar los estados fonónicos con simetrías y dinámicas únicas combinando la simetría de reversión de tiempo rota con dinámicas no herméticas.
- Explorar el flujo de energía quiral y los efectos de Aharonov-Bohm en redes nano-optomecánicas.
- Observar y analizar el efecto Aharonov-Bohm no hermítico y sus implicaciones para las fases bosónicas topológicas.
Principales métodos:
- Utilizando fuerzas de presión de radiación moduladas en el tiempo en pequeñas redes nano-optomecánicas.
- Inducir simetría de reversión del tiempo rota y dinámica no hermética.
- Introducción de las interacciones de compresión no conservadoras de partículas en redes en forma de anillo.
Principales resultados:
- Observación del flujo de energía quiral entre los resonadores mecánicos en una dimensión sintética.
- Demostración de la afinación de Aharonov-Bohm de los modos propios del resonador mecánico.
- Observación de un efecto Aharonov-Bohm no hermítico con ganancia paramétrica, espectros de modo complejo y ajuste de flujo de compresión, puntos excepcionales e inestabilidades.
Conclusiones:
- El estudio revela nuevos estados fonéticos con simetrías y dinámicas únicas.
- Los hallazgos demuestran el potencial para explorar nuevas fases bosónicas topológicas no herméticas.
- Este trabajo abre caminos para aplicaciones en detección y transporte aprovechando la ruptura de simetría espacio-temporal.
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