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Simulación cuántica de antiferromagnetos 2D con cientos de átomos de Rydberg

Pascal Scholl¹, Michael Schuler², Hannah J Williams³

¹Laboratoire Charles Fabry, Institut d'Optique Graduate School, Université Paris-Saclay, CNRS, Palaiseau, France. pascal.scholl@institutoptique.fr.

|July 8, 2021

Resumen

Los investigadores utilizaron matrices de átomos programables para simular la física cuántica de muchos cuerpos, modelando con éxito el modelo antiferromagnético de Ising con hasta 196 átomos. Este enfoque de simulación cuántica es prometedor para resolver problemas complejos más allá de los límites computacionales actuales.

Área de la Ciencia:

Física cuántica de muchos cuerpos
Simulación Cuántica
Física atómica

Sus antecedentes:

La simulación cuántica ofrece un enfoque poderoso para abordar problemas complejos de muchos cuerpos cuánticos intratables para las computadoras clásicas.
Las plataformas de simulación cuántica actuales, incluidos los iones atrapados y los circuitos superconductores, se enfrentan a desafíos en cuanto a escalabilidad y validación de resultados.
Las plataformas atómicas neutrales están surgiendo como candidatos prometedores para simulaciones cuánticas a gran escala.

Objetivo del estudio:

Implementar y estudiar el modelo de campo transversal antiferromagnético de Ising utilizando una matriz programable de átomos neutros.
Demostrar la capacidad de las plataformas atómicas neutrales para la simulación cuántica de alta fidelidad en sistemas de gran tamaño.
Explorar la versatilidad de la plataforma en diferentes configuraciones geométricas y tamaños de sistema.

Principales métodos:

Utilizó matrices programables de átomos individuales atrapados en pinzas ópticas.
Interacciones interatómicas controladas a través de la excitación láser a los estados de Rydberg.
Parámetros Hamiltonianos dinámicamente ajustados para sondear el orden antiferromagnético en sistemas de hasta 196 átomos.
Investigó las geometrías de celosía cuadrada y triangular.

Principales resultados:

Simuló con éxito el modelo antiferromagnético de Ising con hasta 196 átomos, logrando un control de alta fidelidad.
Se ha demostrado una buena concordancia entre los resultados experimentales y los cálculos numéricos para tamaños de sistema de hasta aproximadamente 100 partículas.
Mostró la versatilidad de la plataforma al explorar varios tamaños y geometrías del sistema.

Conclusiones:

La plataforma de simulación cuántica de átomos neutrales desarrollada es capaz de abordar problemas complejos de física de muchos cuerpos.
Este trabajo valida el potencial de las matrices atómicas de interacción de Rydberg para la simulación cuántica a escala.
La plataforma proporciona una herramienta versátil para explorar preguntas abiertas en materia condensada y física cuántica.

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