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Published on: November 11, 2013
Registro cuántico basado en qubits de espín electrónicos y nucleares individuales en diamante.
M V Gurudev Dutt1, L Childress, L Jiang
1Department of Physics, Harvard University, Cambridge, MA 02138, USA.
Science (New York, N.Y.)
|June 2, 2007
Resumen
Los investigadores crearon un registro cuántico controlable utilizando electrones y espines nucleares en el diamante a temperatura ambiente. Este avance permite sistemas de información cuántica escalables con largos tiempos de coherencia.
Área de la Ciencia:
- Ciencias de la información cuántica Ciencias de la información cuántica.
- Física de la materia condensada Física de la materia condensada
- La computación cuántica es la computación cuántica.
Sus antecedentes:
- Identificar sistemas cuánticos aislados con largos tiempos de coherencia es crucial para la ciencia de la información cuántica.
- La manipulación escalable y el acoplamiento de los sistemas cuánticos siguen siendo un desafío clave.
Objetivo del estudio:
- Para demostrar la manipulación coherente de electrones y espines nucleares en el diamante para el procesamiento de información cuántica.
- Para crear un registro cuántico controlable utilizando centros de color de vacío de nitrógeno (NV).
- Evaluar el potencial para sistemas de información cuántica escalables y acoplados ópticamente.
Principales métodos:
- Utilizó radiación óptica y de microondas para el control coherente de los espines de los electrones en los centros de NV.
- Implementó una inicialización robusta de los electrones y los qubits de espín nuclear.
- Se demostró la transferencia de estado cuántico entre los espines de los electrones y los nucleares a temperatura ambiente.
Principales resultados:
- Se logró una inicialización robusta y una transferencia de estado cuántico arbitraria entre electrones y qubits de espín nuclear.
- Se demostró un aislamiento efectivo de los qubits de espín nuclear del espín de los electrones durante la manipulación óptica.
- Se observaron interacciones coherentes entre los qubits de espín nuclear individuales, que muestran excelentes propiedades de coherencia.
Conclusiones:
- Desarrolló un registro cuántico controlable basado en electrones y espines nucleares en el diamante.
- Valida el potencial de los centros de NV para sistemas de información cuántica escalables.
- El funcionamiento a temperatura ambiente y las propiedades de coherencia demostradas allanan el camino para las tecnologías cuánticas prácticas.
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