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La óptica cuántica. La óptica lineal universal es una óptica lineal universal.

Jacques Carolan1, Christopher Harrold1, Chris Sparrow2

  • 1Centre for Quantum Photonics, H. H. Wills Physics Laboratory, and Department of Electrical and Electronic Engineering, University of Bristol, Merchant Venturers Building, Woodland Road, Bristol BS8 1UB, UK.

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Este resumen es generado por máquina.

Los investigadores desarrollaron un único chip fotónico reprogramable capaz de ejecutar todos los protocolos ópticos lineales. Este sistema universal permite la implementación rápida de la lógica cuántica, el muestreo de bosones y Hadamards complejos con alta fidelidad.

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Área de la Ciencia:

  • La óptica cuántica es una óptica cuántica.
  • Circuitos integrados fotónicos.

Sus antecedentes:

  • La óptica lineal es crucial para las pruebas de mecánica cuántica y las tecnologías cuánticas.
  • La implementación de diversos protocolos ópticos a menudo requiere hardware especializado y no reprogramable.

Objetivo del estudio:

  • Demostrar un chip fotónico único, universal y reprogramable para todos los protocolos ópticos lineales.
  • Para permitir el control y la medición arbitrarios para experimentos multifotónicos.

Principales métodos:

  • Integró un circuito óptico universal de seis modos utilizando 15 interferómetros Mach-Zehnder y 30 cambiadores de fase termoópticos en un solo chip.
  • Desarrolló interfaces eléctricas y ópticas para el control arbitrario del cambio de fase, la entrada de múltiples fotones y la detección de un solo fotón.
  • Programó el sistema para ejecutar puertas de lógica cuántica, muestreo de bosones y complejas transformaciones de Hadamard.

Principales resultados:

  • Implementó con éxito la anunciada lógica cuántica y puertas entrelazadas.
  • Se realizó un muestreo de bosones con pruebas de verificación.
  • Ejecutado Hadamards complejo de seis dimensiones y 100 Haar unitarios aleatorios con alta fidelidad promedio (0,999 ± 0,001).

Conclusiones:

  • El chip fotónico reprogramable demostrado sirve como una plataforma universal para protocolos ópticos lineales.
  • Este sistema facilita la implementación rápida de experimentos cuánticos complejos, avanzando la ciencia fundamental y las tecnologías cuánticas.