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Un interruptor de un solo fotón y un transistor habilitados por una memoria cuántica de estado sólido

Shuo Sun1, Hyochul Kim1, Zhouchen Luo1

  • 1Department of Electrical and Computer Engineering, Institute for Research in Electronics and Applied Physics, and Joint Quantum Institute, University of Maryland, College Park, MD 20742, USA.

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Resumen
Este resumen es generado por máquina.

Desarrollamos una memoria cuántica de estado sólido que actúa como un interruptor de un solo fotón y un transistor. Este avance permite el control determinista de las señales ópticas utilizando fotones individuales para la computación cuántica y la red.

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Área de la Ciencia:

  • Ciencia de la información cuántica
  • Física del estado sólido
  • La nanofotónica

Sus antecedentes:

  • Los conmutadores y transistores de un solo fotón son cruciales para los circuitos y redes cuánticas, permitiendo fuertes interacciones fotón-fotón.
  • Lograr el control determinista de las señales ópticas con fotones individuales requiere una memoria cuántica robusta, que ha sido un desafío en las plataformas de estado sólido.

Objetivo del estudio:

  • Para demostrar un interruptor de un solo fotón funcional y un transistor que utiliza una memoria cuántica de estado sólido.
  • Investigar el potencial de los dispositivos nanofotónicos de semiconductores para el procesamiento de información cuántica fotónica de alto ancho de banda.

Principales métodos:

  • Fabricación de un dispositivo que comprende un qubit de espín de semiconductor fuertemente acoplado a una cavidad nanofotónica.
  • Utilizando el qubit de espín como memoria cuántica para controlar las interacciones fotón-fotón.

Principales resultados:

  • Demostró un interruptor de un solo fotón y un transistor basado en una memoria cuántica de estado sólido.
  • Un solo fotón de puerta de 63 picosegundos cambió con éxito un campo de señal con un promedio de 27.7 fotones.
  • El dispositivo exhibió interacciones fotón-fotón controladas antes de restablecer su estado interno.

Conclusiones:

  • Los dispositivos nanofotónicos de semiconductores pueden lograr interacciones fotón-fotón fuertes y controladas.
  • El dispositivo desarrollado es prometedor para permitir el procesamiento de información cuántica fotónica de alto ancho de banda.