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Compensación magnética in situ basada en una señal atómica rápida para un magnetómetro atómico sin relajación sin

Jianjun Li¹, Haidong Wang¹, Teng Wu¹

¹State Key Laboratory of Photonics and Communications, School of Electronics, and Center for Quantum Information Technology, Peking University, Beijing 100871, China.

The Review of scientific instruments

|February 11, 2026

Resumen

Este estudio introduce un método rápido para la compensación del campo magnético en magnetómetros atómicos utilizando la propia señal atómica. La nueva técnica logra la compensación en menos de 11 segundos, mejorando el rendimiento del magnetómetro en diversos entornos.

Área de la Ciencia:

La física atómica es la física atómica.
La magnetometría es una magnetometría.
La geofísica es la geofísica.

Sus antecedentes:

Los magnetómetros atómicos sin blindaje se enfrentan a desafíos de campos geomagnéticos desconocidos.
La compensación precisa del campo magnético es crucial para las mediciones sensibles.

Objetivo del estudio:

Desarrollar un método rápido de compensación de campo magnético in situ para magnetómetros atómicos sin relajación de intercambio de espín (SERF).
Mejorar la aplicabilidad de los magnetómetros SERF en entornos no blindados y blindados.

Principales métodos:

Aprovechando la señal atómica para la compensación del campo magnético.
Empleando un campo magnético de fuerte sesgo alineado con el haz de la bomba.
Compensación secuencial a través de los ejes x, y y z mediante el ajuste de la magnitud del campo de sesgo.

Principales resultados:

Logró la identificación de campo magnético cero en 11 segundos.
Resolución de compensación demostrada mejor que 3.0 nT.
La estabilidad de la potencia del láser se identificó como la principal restricción en la resolución.

Conclusiones:

El nuevo método permite una compensación rápida y efectiva del campo magnético in situ para los magnetómetros atómicos SERF.
Esta técnica amplía el alcance operativo de los magnetómetros atómicos en diversos entornos.
El método es aplicable tanto a entornos no blindados como a entornos blindados, incluyendo aplicaciones médicas y científicas espaciales.

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