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Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
Memoria de bits cuánticos a temperatura ambiente que exceda de un segundo
P C Maurer1, G Kucsko, C Latta
1Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Science (New York, N.Y.)
|June 9, 2012
Resumen
Los investigadores desarrollaron un robusto qubit de estado sólido utilizando un cristal de diamante. Este bit cuántico conserva la polarización durante minutos y tiene una vida útil de coherencia de más de 1 segundo a temperatura ambiente, lo que permite aplicaciones de información cuántica.
Área de la Ciencia:
- Ciencias de la información cuántica Ciencias de la información cuántica.
- Física del estado sólido Física del estado sólido
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- Los bits cuánticos estables (qubits) son cruciales para la computación cuántica y el almacenamiento de información.
- Las tecnologías de qubit existentes se enfrentan a desafíos para mantener la coherencia y la escalabilidad para aplicaciones prácticas.
- El funcionamiento a temperatura ambiente y los largos tiempos de coherencia son altamente deseables para la integración generalizada de qubits.
Objetivo del estudio:
- Para demostrar el control de alta fidelidad de un nuevo qubit de estado sólido.
- Para lograr largos tiempos de memoria de qubits y vidas de coherencia a temperatura ambiente.
- Explorar el potencial de este sistema de qubits para las aplicaciones de la ciencia de la información cuántica.
Principales métodos:
- Fabricación de un qubit utilizando un solo espín nuclear de carbono-13 cerca de un centro de vacío de nitrógeno en diamante purificado isotópicamente.
- Implementación de técnicas de desacoplamiento disipatorio para aislar el espín nuclear del ruido ambiental.
- Verificación experimental de la preservación de la polarización de los qubits y mediciones de coherencia durante toda la vida útil.
Principales resultados:
- Demostró un control de alta fidelidad sobre el qubit de estado sólido.
- Se logró la preservación de la polarización durante varios minutos a temperatura ambiente.
- Tiempos de vida de coherencia medidos superiores a 1 segundo a temperatura ambiente.
- El sistema de qubits muestra robustez y potencial de escalabilidad.
Conclusiones:
- El qubit de estado sólido desarrollado ofrece una estabilidad sin precedentes y largos tiempos de coherencia a temperatura ambiente.
- El uso del desacoplamiento disipatorio es efectivo para extender la memoria de qubits.
- Esta plataforma de qubits robusta y escalable es una promesa significativa para el avance de la ciencia y la tecnología de la información cuántica.
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