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Generación de estados de gato atómico multicomponente de Schrödinger de hasta 20 qubits

Chao Song¹, Kai Xu^2,3, Hekang Li²

¹Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, and Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, China.

Science (New York, N.Y.)

|August 10, 2019

Resumen

Los investigadores generaron de manera determinista estados entrelazados multipartitos a gran escala, incluidos los estados de Greenberger-Horne-Zeilinger (GHZ) de 18 qubits y los estados de gato de Schrödinger de 20 qubits, en un procesador cuántico superconductor. Este avance es clave para la ciencia de la información cuántica y la metrología.

Área de la Ciencia:

Ciencia de la información cuántica
Física cuántica de muchos cuerpos
La computación cuántica superconductora

Sus antecedentes:

Los estados entrelazados multipartitos son fundamentales para la ciencia de la información cuántica.
La generación y verificación de estados entrelazados a gran escala en plataformas controlables es un desafío significativo.

Objetivo del estudio:

Para generar de manera determinista estados entrelazados multipartitos a gran escala.
Explorar las capacidades de los procesadores cuánticos superconductores para estados cuánticos complejos.

Principales métodos:

Utilizó un procesador cuántico con 20 qubits superconductores interconectados.
Diseñó un Hamiltoniano de giro de un eje para la evolución de estados coherentes.
Inicializó los qubits y les permitió evolucionar para apuntar a estados entrelazados.

Principales resultados:

Se logró la generación determinista de un estado Greenberger-Horne-Zeilinger (GHZ) de 18 qubits.
Se han creado estados atómicos multicomponentes de Schrödinger con hasta 20 qubits.
Demostró la evolución a estos estados en intervalos de tiempo específicos.

Conclusiones:

El estudio presenta un enfoque escalable de estado sólido para generar estados entrelazados multipartitos complejos.
Este trabajo avanza en el desarrollo de la metrología cuántica y las aplicaciones de procesamiento de información cuántica.
También proporciona una plataforma para investigar la física cuántica fundamental de muchos cuerpos.

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