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Realización de la corrección de errores cuánticos repetidos en un código de superficie de tres distancias

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  • 1Department of Physics, ETH Zurich, Zurich, Switzerland. skrinner@phys.ethz.ch.

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Este resumen es generado por máquina.

Los investigadores demostraron la corrección de errores cuánticos utilizando el código de superficie en 17 qubits. Este ciclo rápido y de alto rendimiento preserva los estados lógicos de los qubits, allanando el camino para la computación cuántica tolerante a fallas.

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Área de la Ciencia:

  • La computación cuántica
  • Ciencia de la información cuántica
  • Códigos de corrección de errores

Sus antecedentes:

  • La computación cuántica promete resolver problemas difíciles de resolver.
  • Las computadoras cuánticas tolerantes a fallos requieren una corrección robusta de errores contra las incoherencias y las inexactitudes de control.

Objetivo del estudio:

  • Para demostrar la corrección de error cuántico utilizando el código de superficie, un código de corrección de error cuántico de alta tolerancia a los errores.
  • Para codificar información cuántica en un qubit lógico usando 17 qubits físicos en un circuito superconductor.

Principales métodos:

  • Implementamos el código de la superficie en un circuito superconductor con 17 qubits físicos.
  • Se realizan ciclos de corrección de errores en 1,1 microsegundos para preservar los estados lógicos de los qubits.
  • Se midieron y descodificaron los síndromes de error de cambio de bits y de cambio de fase utilizando un algoritmo de correspondencia perfecta de peso mínimo en un enfoque libre de errores.

Principales resultados:

  • Logrado la preservación de cuatro estados cardinales del qubit lógico.
  • Se han demostrado ciclos de corrección de errores cuánticos repetidos, rápidos (ciclo de 1,1 μs) y de alto rendimiento.
  • Se midió una baja probabilidad de error lógico del 3% por ciclo después de rechazar carreras con fugas detectadas.

Conclusiones:

  • La demostración apoya la realizabilidad práctica de la computación cuántica tolerante a fallas.
  • Los resultados se alinean con los modelos numéricos, validando el enfoque experimental.
  • Los avances en la corrección de errores cuánticos, como esta implementación de código de superficie, son cruciales para construir computadoras cuánticas escalables.