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Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 12, 2013
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Enredo inducido por la medición para la excitación almacenada en conjuntos atómicos remotos
C W Chou1, H de Riedmatten, D Felinto
1Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA.
Nature
|December 13, 2005
Resumen
Los investigadores demuestran el entrelazamiento entre dos conjuntos atómicos separados, un paso clave para las redes cuánticas. Este avance permite la distribución y el almacenamiento de estados cuánticos entrelazados para la ciencia de la información cuántica.
Área de la Ciencia:
- Ciencias de la información cuántica Ciencias de la información cuántica.
- Las redes cuánticas son redes cuánticas.
- Física atómica es la física atómica.
Sus antecedentes:
- La difusión de recursos cuánticos a través de complejas redes cuánticas es crucial para las aplicaciones de la ciencia de la información cuántica.
- Los estados cuánticos entrelazados y la memoria cuántica son esenciales para la computación cuántica escalable, la comunicación y la metrología.
Objetivo del estudio:
- Para demostrar el entrelazamiento entre dos conjuntos atómicos distintos y separados espacialmente.
- Establecer un método para distribuir y almacenar estados cuánticos entrelazados de forma remota.
Principales métodos:
- Inducir el entrelazamiento a través de la interferencia cuántica de fotones emitidos por muestras atómicas.
- Almacenar el estado entrelazado en grandes conjuntos atómicos (10^5 átomos por sitio) con un retraso programable.
- La confirmación del entrelazamiento mediante el mapeo de los estados atómicos a los campos ópticos y la medición de la coherencia y las estadísticas de fotones.
Principales resultados:
- Generó con éxito el entrelazamiento entre dos conjuntos atómicos separados espacialmente.
- Determinó cuantitativamente un límite inferior para el entrelazamiento del estado atómico conjunto.
- Se ha demostrado el almacenamiento remoto de estados cuánticos entrelazados en conjuntos atómicos.
Conclusiones:
- Este trabajo representa un progreso significativo en la distribución y almacenamiento de estados cuánticos entrelazados.
- Los hallazgos allanan el camino para arquitecturas de redes cuánticas más escalables.
- Permite avances futuros en computación cuántica, comunicación y metrología.
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