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Updated: Feb 18, 2026
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Transferencia de estado cuántico fotónico entre un gas atómico frío y un cristal
Nicolas Maring1, Pau Farrera1, Kutlu Kutluer1
1ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain.
Nature
|November 24, 2017
Resumen
Los investigadores lograron una interconexión óptica cuántica entre un conjunto atómico frío y un cristal dopado con tierras raras. Este avance permite la transferencia de estado cuántico fiel para futuras redes cuánticas híbridas.
Área de la Ciencia:
- Ciencia de la información cuántica
- Las redes cuánticas
- Óptica y fotónica
Sus antecedentes:
- Las redes cuánticas híbridas fusionan diversos sistemas cuánticos para mejorar las capacidades.
- Las interconexiones ópticas se enfrentan a desafíos en la coincidencia de longitud de onda y ancho de banda de fotones.
- Conectar nodos cuánticos dispares es crucial para las tecnologías cuánticas escalables.
Objetivo del estudio:
- Para demostrar la interconexión cuántica óptica entre dos sistemas cuánticos de materia distintos.
- Para superar los desafíos en la interfaz de sistemas cuánticos con el almacenamiento de fotones.
- Avanzar en el desarrollo de redes cuánticas heterogéneas.
Principales métodos:
- Utilizó la conversión de frecuencia cuántica en cascada para la interfaz de fotones.
- Utilizó un solo fotón a una longitud de onda de telecomunicaciones de 1.552 nm.
- Transfirió estados cuánticos entre un conjunto atómico frío y un cristal de tierras raras.
Principales resultados:
- Logró una transferencia de estado cuántico fiel entre los sistemas atómicos y de estado sólido.
- Transferencia demostrada de las correlaciones cuánticas de los fotones a las excitaciones de espín colectivo.
- Muestra la conversión, el almacenamiento y la recuperación de qubits de bin de tiempo de un solo fotón con >85% de fidelidad.
Conclusiones:
- Se estableció con éxito la interconexión óptica cuántica de sistemas cuánticos dispares.
- Abrió el camino para conectar ópticamente nodos cuánticos con diversas funcionalidades.
- Representó un avance significativo hacia la realización de redes cuánticas híbridas a gran escala.
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