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Demostración experimental de la comunicación cuántica mejorada con memoria
M K Bhaskar1, R Riedinger1, B Machielse1
1Department of Physics, Harvard University, Cambridge, MA, USA.
Nature
|April 3, 2020
Resumen
Los investigadores desarrollaron un componente de repetidor cuántico utilizando una memoria de espín de estado sólido. Este avance permite una comunicación cuántica más rápida y de mayor distancia, allanando el camino para redes cuánticas avanzadas.
Área de la Ciencia:
- Ciencia de la información cuántica
- Ingeniería de Comunicación Cuántica
- Física del estado sólido
Sus antecedentes:
- La comunicación cuántica de larga distancia es crucial pero limitada por la pérdida de fotones.
- La distribución actual de la clave cuántica tiene limitaciones de rango.
- Los repetidores cuánticos son necesarios pero técnicamente desafiantes.
Objetivo del estudio:
- Para implementar un componente clave para los repetidores cuánticos.
- Para demostrar la comunicación cuántica de alta fidelidad en rangos extendidos.
- Avanzar en el desarrollo de redes cuánticas prácticas.
Principales métodos:
- Utilizó una sola memoria de espín de estado sólido en un resonador de diamante nanofotónico.
- Implementó mediciones de estado Bell fotónicas asincrónicas.
- Se llevó a cabo un experimento de prueba de principio.
Principales resultados:
- Logró una operación de alta fidelidad para los componentes del repetidor cuántico.
- Se ha demostrado que las velocidades de comunicación cuántica exceden la transmisión directa ideal.
- Operado a velocidades de reloj de megahertz.
Conclusiones:
- El componente desarrollado es un paso crucial hacia repetidores cuánticos prácticos.
- Este trabajo avanza en la viabilidad de las redes cuánticas a gran escala.
- Las memorias cuánticas de estado sólido de alta fidelidad son clave para la futura comunicación cuántica.
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