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Coherencia de luz de giro para medición y control de un solo giro en diamante
B B Buckley1, G D Fuchs, L C Bassett
1Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, USA.
Science (New York, N.Y.)
|October 16, 2010
Resumen
Demostramos un nuevo método para medir y controlar el estado de giro de los centros de vacío de nitrógeno en el diamante utilizando la luz. Este avance permite mediciones cuánticas no destructivas y procesamiento de información cuántica escalable.
Área de la Ciencia:
- La óptica cuántica es una óptica cuántica.
- Ciencias de la información cuántica de estado sólido Ciencias de la información cuántica de estado sólido.
- Las tecnologías cuánticas del diamante.
Sus antecedentes:
- Los centros de vacío de nitrógeno (NV) en el diamante son qubits prometedores para las tecnologías cuánticas debido a sus largos tiempos de coherencia de espín.
- La lectura convencional del estado de giro NV es óptica y destructiva, lo que limita las aplicaciones.
- El desarrollo de mediciones no destructivas y técnicas de control coherentes es crucial para avanzar en el procesamiento de información cuántica.
Objetivo del estudio:
- Demostrar un método para la medición de espín no destructivo de centros NV individuales utilizando la luz.
- Para lograr una manipulación de espín coherente de los centros NV a través de las interacciones luz-materia.
- Para sentar las bases para el intercambio de información cuántica escalable entre espines NV y fotones.
Principales métodos:
- Utilizó el efecto Faraday para la lectura dispersiva de un solo giro de los centros de NV.
- Empleó el efecto Stark óptico para la manipulación de espín coherente de los centros NV.
- Interacciones de materia ligera investigadas para la transferencia de información cuántica.
Principales resultados:
- Se ha demostrado con éxito la medición de espín no destructiva de centros NV individuales a través de medios ópticos.
- Logró una manipulación de espín coherente de los centros NV utilizando efectos inducidos por la luz.
- Estableció una base para las interfaces de fotones de espín coherentes.
Conclusiones:
- El acoplamiento dispersivo de materia ligera permite un control coherente y una medición no destructiva de los estados de espín NV.
- Estas técnicas son esenciales para el procesamiento de información cuántica escalable y el entrelazamiento a largas distancias.
- Los métodos demostrados allanan el camino para tecnologías cuánticas avanzadas que utilizan centros NV.
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