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Logía cuántica óptica multi-iónica integrada

Karan K Mehta1, Chi Zhang2, Maciej Malinowski2

  • 1Department of Physics, Institute for Quantum Electronics, ETH Zürich, Zurich, Switzerland. mehtak@phys.ethz.ch.

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|October 22, 2020
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron ópticas escalables e integradas para qubits de iones atrapados, logrando puertas de lógica cuántica de alta fidelidad. Este avance mejora la robustez y ofrece un camino hacia el procesamiento de información cuántica a gran escala.

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Área de la Ciencia:

  • Ciencia de la información cuántica
  • Física atómica, molecular y óptica

Sus antecedentes:

  • El procesamiento de información cuántica exige mejores tasas de error y escalabilidad en los sistemas actuales.
  • Los qubits de iones atrapados ofrecen un potencial a largo plazo, pero la complejidad del control óptico dificulta el escalamiento.
  • La óptica integrada en las trampas iónicas puede mejorar la robustez y la paralelización del sistema.

Objetivo del estudio:

  • Para demostrar la óptica escalable co-fabricada con una trampa de iones de electrodo de superficie para puertas lógicas cuánticas multi-iónicas de alta fidelidad.
  • Para superar las limitaciones de las configuraciones ópticas complejas en los sistemas actuales de iones atrapados.
  • Para permitir la paralelización práctica para los procesadores cuánticos de alta fidelidad.

Principales métodos:

  • Fabricación conjunta de ópticas escalables con una trampa de iones de electrodo de superficie.
  • Acoplamiento directo de fibra de luz a un chip de trampa criogénica a través de múltiples canales.
  • Implementación de refrigeración láser en estado de tierra y puertas de estado entrelazadas de dos iones.

Principales resultados:

  • Se han logrado fidelidades superiores al 99,3% para los estados entrelazados de dos iones.
  • Se ha demostrado una entrega eficiente de la luz, eliminando la necesidad de una alineación compleja del haz.
  • Desarrolló hardware que reduce el ruido y las derivaciones en operaciones de lógica cuántica.

Conclusiones:

  • La óptica escalable e integrada proporciona una ruta robusta a la lógica cuántica de iones atrapados de alta fidelidad.
  • Este enfoque facilita la paralelización práctica para los procesadores cuánticos avanzados.
  • Las aplicaciones potenciales se extienden a la detección cuántica y el cronometraje.