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Un modelo exactamente soluble para las comunicaciones cuánticas.

Graeme Smith1, John A Smolin1

  • 1IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, USA.

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|November 19, 2013
PubMed
Resumen
Este resumen es generado por máquina.

Desarrollamos un modelo cuántico soluble para los canales de comunicación, permitiendo el cálculo exacto de las tasas de transmisión de datos. Esta teoría de la información cuántica avanza en el análisis de canales cuánticos ruidosos para la distribución de claves cuánticas y la fibra óptica.

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Área de la Ciencia:

  • Ciencias de la información cuántica Ciencias de la información cuántica.
  • Teoría de la comunicación Teoría de la comunicación Teoría de la comunicación
  • La óptica cuántica es una óptica cuántica.

Sus antecedentes:

  • La teoría de la información define los límites para los sistemas de comunicación ruidosos.
  • Los modelos cuánticos precisos de los dispositivos a menudo son intratables, lo que dificulta los cálculos de capacidad.
  • Las capacidades de comunicación siguen siendo desconocidas para muchos canales cuánticos, incluida la transmisión de guías de onda.

Objetivo del estudio:

  • Desarrollar un modelo exactamente soluble para los canales de comunicación cuántica.
  • Para derivar expresiones explícitas para capacidades punto a punto de canales cuánticos ruidosos.
  • Extender la teoría a las redes de comunicación cuántica, incluidos los canales de difusión y acceso múltiple.

Principales métodos:

  • Desarrolló un modelo de comunicación que incorporaba un campo electromagnético cuántico completo.
  • Derivó soluciones analíticas exactas para las capacidades de comunicación.
  • Investigó modelos rudimentarios de redes cuánticas (difusión, acceso múltiple).

Principales resultados:

  • Proporcionó expresiones explícitas para todas las capacidades punto a punto de canales cuánticos ruidosos.
  • Desarrolló una teoría para las redes de comunicación cuántica.
  • Las predicciones del modelo se alinean estrechamente (dentro de los bits) con el modelo gaussiano clásico.

Conclusiones:

  • El modelo cuántico presentado ofrece un enfoque exactamente soluble para la capacidad del canal de comunicación.
  • Los hallazgos tienen implicaciones directas para la distribución cuántica de claves y las comunicaciones por fibra óptica.
  • El modelo simplifica la física relevante para escenarios de alta señal a ruido, manteniendo la precisión.