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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Control integrado de varias longitudes de onda de un qubit iónico
R J Niffenegger1, J Stuart2,3, C Sorace-Agaskar2
1Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA, USA. robert.niffenegger@ll.mit.edu.
Nature
|October 22, 2020
Resumen
Los investigadores desarrollaron un chip fotónico integrado para controlar los iones atrapados, mejorando la portabilidad y escalabilidad de los sensores cuánticos y las computadoras. Este avance permite una coherencia robusta de qubits, crucial para las tecnologías cuánticas de próxima generación.
Área de la Ciencia:
- Ciencia de la información cuántica
- Fotónica integrada
- Física atómica
Sus antecedentes:
- Los iones atómicos atrapados son fundamentales para los procesadores de información cuántica y los relojes ópticos.
- Los métodos actuales utilizan ópticas de espacio libre, lo que dificulta la portabilidad y la escalabilidad.
- La integración monolítica ofrece un camino hacia sistemas atómicos miniaturizados y robustos.
Objetivo del estudio:
- Para demostrar un nuevo chip de trampa de iones de electrodo de superficie con fotónica integrada para controlar los qubits de iones de estroncio (Sr +).
- Para superar las limitaciones de la óptica de espacio libre en sistemas de iones atrapados.
- Avanzar en el desarrollo de sensores cuánticos portátiles y computadoras cuánticas escalables.
Principales métodos:
- Fabricación de un chip de captura de iones de electrodo de superficie compatible con el CMOS.
- Integración de guías de onda y acopladores de rejilla para la transmisión de luz.
- Acoplamiento de luz láser (violeta a infrarroja) a través de una matriz de fibra óptica en el chip.
- Demostración de la coherencia de los qubits mediante la óptica integrada.
Principales resultados:
- Entrega exitosa de todas las longitudes de onda necesarias para la manipulación de qubits Sr+ a través de fotónica integrada.
- Demostración de la coherencia de los qubits resistentes a las vibraciones de la plataforma.
- Se logra un control óptico estable a través de guías de onda integradas y acoplamiento de fibra.
Conclusiones:
- El chip fotónico integrado de trampa de iones representa un paso significativo hacia las tecnologías cuánticas de iones atrapados portátiles y escalables.
- Esta tecnología permite un control robusto y una mayor coherencia de qubits, allanando el camino para sensores y procesadores cuánticos avanzados.
- Facilita el desarrollo de sistemas para el control completo e individual de múltiples iones en el procesamiento de información cuántica.
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