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Observación del fuerte acoplamiento entre un átomo y un microresonador monolítico
Takao Aoki1, Barak Dayan, E Wilcut
1Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA.
Nature
|October 13, 2006
Resumen
Los investigadores lograron un fuerte acoplamiento entre átomos de cesio individuales y microrresonadores toroidales. Este avance en la óptica cuántica avanza en la ciencia de la información cuántica y permite nuevas aplicaciones en redes cuánticas y computación.
Área de la Ciencia:
- La óptica cuántica es una óptica cuántica.
- Ciencias de la información cuántica Ciencias de la información cuántica.
- Cavidad Cantidad Electrodinámica Cuántica
Sus antecedentes:
- Las fuertes interacciones luz-materia a nivel de un solo fotón son cruciales para la óptica cuántica y la ciencia de la información.
- Los experimentos de electrodinámica cuántica de cavidad han utilizado principalmente resonadores Fabry-Perot con átomos individuales.
- Los desafíos en la mejora de los resonadores y dispositivos de escala Fabry-Perot impulsan la búsqueda de sistemas alternativos de microcavidades.
Objetivo del estudio:
- Para demostrar un fuerte acoplamiento entre átomos individuales de cesio y un microrresonador toroidal.
- Investigar procesos ópticos con átomos y fotones individuales en sistemas de microcavidades.
- Explorar aplicaciones en redes cuánticas y procesamiento de información cuántica.
Principales métodos:
- Utilizó un microrresonador toroidal de alta calidad.
- Eventos de tránsito observados de átomos de cesio individuales que caen a través del campo evanescente del resonador.
- Desarrolló un modelo teórico para cuantificar las tasas de acoplamiento.
Principales resultados:
- Se logró un fuerte acoplamiento entre átomos de cesio individuales y campos de microrresonador toroidales.
- Se determinó la tasa de acoplamiento coherente para las interacciones átomo-resonador.
- Demostró que las tasas de acoplamiento coherente exceden las tasas de disipación del átomo y la cavidad.
Conclusiones:
- El acoplamiento fuerte en los microresonadores toroidales es factible con átomos individuales.
- Este trabajo allana el camino para el uso de microrresonadores fabricados litográficamente en tecnologías cuánticas.
- Las aplicaciones potenciales incluyen redes cuánticas, lógica cuántica escalable y procesamiento de información cuántica basado en chips atómicos.
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