High-precision measurement of the magneto-optical Faraday effect via difference weak measurements

High-precision measurement of the magneto-optical Faraday effect via difference weak measurements

We propose a modified difference weak measurement scheme that permits precise measurements of the magneto-optical Faraday effect. By making normalized difference processing for a set of post-selected light intensity, a linear-response regime with a significant weak-value amplification effect is esta...

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Veröffentlicht in:Journal of applied physics 2024-11, Vol.136 (19)
Hauptverfasser: Wang, Zhihui, Wang, Bo, Zheng, Xuan, Jiensibieke, Liza, Wang, Junpeng, Niu, Sujian, Li, Zhaoxue, Yang, Xining
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Faraday effect
Luminous intensity
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container_issue 19
container_start_page
container_title Journal of applied physics
container_volume 136
creator Wang, Zhihui
Wang, Bo
Zheng, Xuan
Jiensibieke, Liza
Wang, Junpeng
Niu, Sujian
Li, Zhaoxue
Yang, Xining
description We propose a modified difference weak measurement scheme that permits precise measurements of the magneto-optical Faraday effect. By making normalized difference processing for a set of post-selected light intensity, a linear-response regime with a significant weak-value amplification effect is established. In the proof-of-principle experiment, we measure the magnetic intensity using the polarization system and achieve precision at the order of ∼ 10 − 7 T. Our scheme can be applied to measure other magneto-optical effects, providing a method for future ultra-sensitive sensing and metrology in magnetic physics.
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subjects Faraday effect
Luminous intensity
title High-precision measurement of the magneto-optical Faraday effect via difference weak measurements
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