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La cristalización de Coulomb de iones altamente cargados
L Schmöger1, O O Versolato1, M Schwarz1
1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany. Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany.
Science (New York, N.Y.)
|March 14, 2015
Resumen
Los iones altamente cargados (ICH) ahora son controlables para mediciones de precisión. Demostramos el enfriamiento de HCI a temperaturas de millikelvin utilizando iones de berilio enfriados por láser, lo que permite nuevos diseños de relojes atómicos y búsquedas de física.
Área de la Ciencia:
- Física atómica, molecular y óptica.
- Ciencias de la información cuántica Ciencias de la información cuántica.
Sus antecedentes:
- El control preciso sobre el movimiento de iones es clave para mediciones de alta precisión.
- Los iones altamente cargados (ICH) son cruciales para los relojes atómicos avanzados y las búsquedas de física más allá del Modelo Estándar.
- El enfriamiento de HCIs a bajas temperaturas ha sido un desafío significativo.
Objetivo del estudio:
- Para demostrar la cristalización de Coulomb y el enfriamiento simpático de iones altamente cargados (HCIs).
- Para permitir la espectroscopia láser de alta precisión en HCI.
- Para allanar el camino para la próxima generación de relojes atómicos y la investigación física fundamental.
Principales métodos:
- Produciendo (40) iones Ar 13+ en una trampa de iones de haz de electrones.
- Retrapping HCIs en una trampa de radiofrecuencia lineal criogénica.
- Empleando el enfriamiento de movimiento simpático a través de la interacción de Coulomb con iones Be (((+) enfriados por láser.
Principales resultados:
- Se ha logrado la cristalización de Coulomb de las HCI ((40) Ar ((13+)).
- Se ha demostrado el enfriamiento de un solo ión Ar ((13+) por un solo ión Be ((+)).
- Reducción de la temperatura del HCI en siete órdenes de magnitud (de megakelvin a millikelvin).
Conclusiones:
- El enfriamiento simpático elimina un obstáculo importante para la espectroscopia láser de alta precisión en HCI.
- Esta técnica es un requisito previo para la espectroscopia de lógica cuántica con una precisión potencial de 10~19.
- Permite futuras aplicaciones en relojes atómicos y búsquedas de nueva física.
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