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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Codificación de información en circuitos cuánticos

Xiao Mi¹, Pedram Roushan¹, Chris Quintana¹

¹Google Research, Mountain View, CA, USA.

Science (New York, N.Y.)

|October 28, 2021

Resumen

Este resumen es generado por máquina.

Los investigadores estudiaron experimentalmente la codificación cuántica en un procesador cuántico de 53 qubits. Observaron la propagación y el entrelazamiento del operador, encontrando que el entrelazamiento requiere recursos clásicos significativos para simular, a diferencia de la propagación.

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Área de la Ciencia:

Ciencia de la información cuántica
La computación cuántica
Física de la materia condensada

Sus antecedentes:

La información cuántica se propaga a través de las interacciones en los sistemas cuánticos, un proceso llamado codificación cuántica.
La comprensión de la codificación cuántica es crucial para abordar las cuestiones fundamentales de la física.

Objetivo del estudio:

Investigar experimentalmente la dinámica de la codificación cuántica utilizando correlatores fuera del orden temporal.
Para distinguir y observar las firmas de la dispersión del operador y el entrelazamiento del operador en circuitos cuánticos.

Principales métodos:

Utilizó un procesador cuántico de 53 qubits para medir la evolución dependiente del tiempo y las fluctuaciones de los correlatores fuera del orden temporal.
Los circuitos cuánticos específicos diseñados para diferenciar entre la difusión del operador y la dinámica de entrelazamiento del operador.

Principales resultados:

Experimentalmente se han observado firmas distintas para la dispersión y el entrelazamiento del operador.
Demostrado que la extensión del operador se puede modelar de manera eficiente clásica.
Mostró que la simulación del entrelazamiento de operadores en circuitos idealizados requiere recursos computacionales clásicos a escala exponencial.

Conclusiones:

La investigación experimental proporciona una visión de la compleja dinámica de la codificación cuántica.
Los hallazgos destacan los desafíos computacionales asociados con la simulación del entrelazamiento cuántico.
Abre el camino para utilizar procesadores cuánticos a corto plazo para estudiar observables físicos complejos.