Anchos de línea óptica ultra estrechos en cristales moleculares de tierras raras
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Diana Serrano1, Senthil Kumar Kuppusamy2,3, Benoît Heinrich4
1Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, Paris, France. diana.serrano@chimieparistech.psl.eu.
Nature
|March 10, 2022
Resumen
Los investigadores desarrollaron cristales moleculares de tierras raras para tecnologías cuánticas. Estos cristales exhiben anchos de línea óptica estrechos, lo que permite el almacenamiento eficiente de la luz y las operaciones de puerta cuántica para la computación cuántica fotónica.
Área de la Ciencia:
- Ciencia de la información cuántica
- Ciencias de los materiales
- La fotónica
Sus antecedentes:
- Los iones de tierras raras (REIs) son cruciales para las tecnologías cuánticas debido a sus estados cuánticos de larga duración y anchos de línea espectral estrechos.
- Los materiales cristalinos existentes a menudo carecen de entornos lo suficientemente silenciosos para un rendimiento óptimo de REI, lo que dificulta la nanofotónica integrada.
- Los sistemas moleculares suelen tener líneas ópticas amplias, lo que limita la interfaz coherente óptico-espín, a pesar de su versatilidad de integración.
Objetivo del estudio:
- Desarrollar una nueva plataforma de materiales que combine la coherencia de las IRE con las capacidades de integración de los sistemas moleculares.
- Superar las limitaciones de los sistemas cristalinos y moleculares existentes para las tecnologías cuánticas fotónicas.
- Para demostrar las funcionalidades cuánticas clave usando cristales moleculares de tierras raras.
Principales métodos:
- Síntesis y caracterización de nuevos cristales moleculares basados en el europio.
- Medición de anchuras de línea ópticas y de espín homogéneas.
- Demostración de la inicialización óptica del espín, el almacenamiento coherente de la luz y el control óptico de las interacciones ión-ión.
Principales resultados:
- Los cristales moleculares de europio alcanzaron anchos de línea en el rango de decenas de kilohertz, significativamente más estrechos que otros sistemas moleculares.
- Se demostró la inicialización óptica eficiente y el almacenamiento coherente de la luz utilizando un peine de frecuencia atómica.
- Se logró el control óptico de las interacciones ion-ion, allanando el camino para la implementación de puertas cuánticas.
Conclusiones:
- Los cristales moleculares de tierras raras representan una nueva plataforma prometedora para las tecnologías cuánticas fotónicas.
- Esta plataforma combina emisores REI altamente coherentes con las ventajas de composición e integración de los materiales moleculares.
- Las funcionalidades demostradas destacan el potencial para el avance de las memorias cuánticas, la transducción, la computación y la nanofotónica integrada.
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