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Transporte acústico extremadamente asimétrico de información protegido contra la quiralidad con inmunidad al ruido

Quansen Wang¹, Chun Liu¹, Chao Song¹

¹Institute of Acoustics, Tongji University, Shanghai, China.

Nature communications

|August 28, 2025

Resumen

Los investigadores desarrollaron un método para la transmisión asimétrica de haces de vórtice quiral, preservando las cargas topológicas (TC) para el transporte de información direccional seguro. Esta técnica permite una transferencia de datos de alto contraste y resistente al ruido, superando los problemas de distorsión de la señal en la comunicación óptica.

Área de la Ciencia:

Óptica y fotónica
Los metamateriales
Transmisión de la información

Sus antecedentes:

Los haces de vórtice quiral con cargas topológicas sintonizables (TC) son clave para la transmisión de información multicanal de alta capacidad.
El transporte de vórtice asimétrico es deseable para la robustez y la seguridad, pero a menudo altera los TC, causando distorsión de la señal y interrumpiendo la independencia del canal.

Objetivo del estudio:

Para lograr una transmisión extremadamente asimétrica de rayos de vórtice quirales con contraste de alta energía.
Para preservar la quiralidad y las cargas topológicas (TC) durante el transporte asimétrico.
Permitir el transporte de información seguro, direccional y resistente al ruido.

Principales métodos:

Se explotó el grado de libertad del modo radial en el espacio quiral para el control asimétrico del haz.
Modulación del modo radial inducida mediante el impulso unidireccional de un metamaterial invasivo.
Información codificada en diferentes canales TC para el transporte asimétrico de imágenes.

Principales resultados:

Se logró la transmisión de vórtice completo en una dirección y el aislamiento completo en la dirección opuesta.
Transporte de imagen asimétrica de alto contraste demostrado mientras se preserva la quiralidad y las TC.
El rendimiento casi inmune al ruido observado en relaciones señal-ruido tan bajas como -25 dB.

Conclusiones:

Se presentó una nueva estrategia para el control de haz quiral utilizando la modulación de modo radial.
El enfoque garantiza la preservación y la ortogonalidad de la TC, lo que conduce a la resistencia al ruido.
Abrió el camino para el transporte de información seguro, direccional y resistente al ruido en plataformas de ondas estructuradas.

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