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Escalar y conectar en red un ordenador cuántico fotónico modular

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Los investigadores construyeron un modelo de computadora cuántica fotónica utilizando 35 chips. Esto demuestra un camino escalable hacia la computación cuántica universal y tolerante a fallos con sistemas fotónicos integrados.

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Área de la Ciencia:

  • La computación cuántica
  • La fotónica
  • Fotónica integrada

Sus antecedentes:

  • La fotónica es una plataforma prometedora para la computación cuántica debido a la integración de chips, fibra óptica y operación a temperatura ambiente.
  • Los sistemas integrados completos con funcionalidades básicas para la computación cuántica universal y tolerante a fallos requieren una demostración experimental.

Objetivo del estudio:

  • Para construir y demostrar un modelo a escala de una computadora cuántica fotónica.
  • Mostrar la viabilidad de los sistemas integrados para la computación cuántica universal y tolerante a fallos.

Principales métodos:

  • Construyó un modelo de computadora cuántica utilizando 35 chips fotónicos, 84 compresores y 36 detectores de resolución de número de fotones.
  • Módulos escalables y discretos en red a través de interconexiones de fibra óptica.
  • Demostró bloques de construcción clave para la universalidad y la tolerancia a las fallas, incluida la síntesis anunciada de estados no gaussianos y mediciones adaptativas.

Principales resultados:

  • Sintetizó un estado de clúster entrelazado a través de chips separados con 86.400 millones de modos.
  • Implementado el código de repetición de distancia-2 foliada con decodificación en tiempo real.
  • Demostró la síntesis anunciada de los estados de los recursos, la multiplexación en tiempo real, la formación de estados de agrupación espacio-temporal y las mediciones adaptativas.

Conclusiones:

  • El modelo de computadora cuántica fotónica construido demuestra el camino para cruzar el umbral de tolerancia a fallas.
  • Este trabajo sienta las bases para escalar computadoras cuánticas fotónicas para abordar aplicaciones útiles.
  • El análisis de las tolerancias de pérdida óptica proporciona información sobre la superación de un obstáculo importante para la tolerancia a fallas.