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Un torniquete de fotones regulado dinámicamente por un átomo
Barak Dayan1, A S Parkins, Takao Aoki
1Norman Bridge Laboratory of Physics, 12-33, California Institute of Technology, Pasadena, CA 91125, USA.
Science (New York, N.Y.)
|February 23, 2008
Resumen
Los investigadores demostraron un "tornillo de fotones" utilizando un solo átomo en un resonador óptico. Este sistema permite el transporte controlado, uno por uno, de fotones, crucial para la ciencia de la información cuántica y el procesamiento cuántico escalable.
Área de la Ciencia:
- La óptica cuántica es una óptica cuántica.
- Las fuertes interacciones átomo-fotón son fuertes.
Sus antecedentes:
- La óptica no lineal tradicional involucra muchos átomos y fotones.
- Nuevos fenómenos surgen en el régimen cuántico con fuertes interacciones átomo-fotón.
Objetivo del estudio:
- Para lograr interacciones fuertes entre átomos individuales y fotones.
- Para demostrar un mecanismo para el transporte de fotones regulado, uno por uno.
Principales métodos:
- Utilizando un resonador óptico microscópico.
- Empleando el acoplamiento crítico de la luz de entrada.
- Mediciones de conteo de fotones de los campos de entrada y salida.
Principales resultados:
- Demostró un mecanismo robusto y eficiente para el transporte controlado de un solo fotón.
- Un solo átomo en el resonador actúa como un torniquete de fotones, controlando la salida en función del número de fotones de entrada.
- Transformación verificada de flujo de fotones poissoniano a flujo de fotones subpoissoniano.
Conclusiones:
- Logró un régimen cuántico de fuertes interacciones átomo-fotón.
- Desarrolló un torniquete fotónico funcional para el control preciso de fotones.
- Los resultados son aplicables a la ciencia de la información cuántica y el procesamiento cuántico escalable.
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