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Operaciones Lógicas con un Qubit Dinámico en el Código Floquet-Bacon-Shor

Xuandong Sun1,2,3, Longcheng Li4,5, Zhiyi Wu2,6

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Los investigadores implementaron experimentalmente el código Floquet-Bacon-Shor, un tipo de corrección de errores cuánticos, en un procesador superconductor. Esto demuestra una nueva vía para la computación cuántica tolerante a fallos y eficiente en recursos utilizando qubits lógicos dinámicos.

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código Floquet-Bacon-Shorqubits lógicos dinámicoscorrección de errores cuánticoscomputación cuántica tolerante a fallosprocesador superconductor

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Área de la Ciencia:

  • Ciencia de la Información Cuántica
  • Computación Cuántica
  • Corrección de Errores Cuánticos

Sus antecedentes:

  • La corrección de errores cuánticos (QEC) es crucial para la computación cuántica tolerante a fallos (FT), protegiendo los sistemas cuánticos del ruido.
  • Los códigos estabilizadores como los códigos de superficie y de color son métodos establecidos de QEC.
  • La corrección de errores cuánticos dinámica en el tiempo, incluidos los códigos Floquet, ofrece nuevas posibilidades para la computación cuántica FT.

Objetivo del estudio:

  • Implementar experimentalmente el código Floquet-Bacon-Shor en un procesador cuántico superconductor.
  • Demostrar la codificación y estabilización de qubits lógicos dinámicos.
  • Mostrar el potencial de los códigos Floquet para la computación cuántica FT eficiente en recursos.

Principales métodos:

  • Implementación del código Floquet-Bacon-Shor en una red de qubits superconductores de 3x3.
  • Codificación y medición de estados lógicos de dos qubits, incluido un qubit lógico dinámico y uno estático.
  • Aplicación de puertas de un solo qubit universales y una puerta CNOT lógica para el entrelazamiento.

Principales resultados:

  • Codificación y medición FT de estados lógicos de dos qubits.
  • Estabilización de estados codificados mediante detección repetida de errores.
  • Generación de un estado lógico de Bell detectado por errores entre qubits dinámicos y estáticos con una fidelidad del 75,9%.
  • Demostración de puertas de un solo qubit universales en el qubit lógico dinámico.

Conclusiones:

  • La implementación experimental valida el código Floquet-Bacon-Shor para la corrección de errores cuánticos.
  • Los códigos Floquet muestran potencial para mejorar las capacidades de corrección de errores y el rendimiento del código.
  • Este trabajo destaca el potencial de la QEC dinámica para la computación cuántica FT eficiente en recursos.