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Gradient Echo Quantum Memory in Warm Atomic Vapor
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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
PubMed
Resumen
Este resumen es generado por máquina.

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.

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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.