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Un reloj atómico óptico basado en un ion altamente cargado

Steven A King1,2, Lukas J Spieß3, Peter Micke1,4,5

  • 1Physikalisch-Technische Bundesanstalt, Braunschweig, Germany.

Nature
|November 3, 2022
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un nuevo reloj atómico óptico utilizando iones altamente cargados (HCI), específicamente Argon-13 más (Ar13+). Este avance ofrece una precisión sin precedentes para las pruebas de física fundamental y las búsquedas de nueva física más allá del modelo estándar.

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Área de la Ciencia:

  • Física atómica
  • Metrología
  • La electrodinámica cuántica

Sus antecedentes:

  • Los relojes atómicos ópticos son dispositivos de medición líderes con amplias aplicaciones.
  • Los iones altamente cargados (HCI) ofrecen propiedades atómicas únicas para mejorar el rendimiento del reloj y reducir la sensibilidad ambiental.

Objetivo del estudio:

  • Para realizar una nueva clase de relojes ópticos utilizando iones altamente cargados.
  • Establecer las transiciones ópticas prohibidas en HCI como referencias para relojes de alta precisión y pruebas de física fundamental.

Principales métodos:

  • Desarrollo de un reloj atómico óptico basado en una transición dipolo magnético en Ar13+.
  • Evaluación exhaustiva de la incertidumbre sistemática de la frecuencia.
  • Comparaciones de reloj para mejorar la frecuencia de transición y las incertidumbres de desplazamiento de isótopos.

Principales resultados:

  • Se logró una incertidumbre de frecuencia sistemática de 2,2 × 10^-17 para el reloj Ar13+, comparable a los relojes ópticos existentes.
  • Mejoró las incertidumbres para la frecuencia de transición absoluta y el desplazamiento de isótopos en ocho y nueve órdenes de magnitud, respectivamente.
  • Efectos de retroceso cuántico electrodinámico (QED) investigados, reduciendo la incertidumbre teórica en un factor de tres.

Conclusiones:

  • Las transiciones ópticas prohibidas en HCI se establecen como referencias viables para relojes ópticos de vanguardia.
  • Este trabajo allana el camino para futuras búsquedas de alta sensibilidad para la física más allá del modelo estándar.
  • El reloj Ar13+ representa un avance significativo en la medición de precisión y la exploración de la física fundamental.