Testing the Renormalization of the von Klitzing Constant by Cavity Vacuum Fields

IF 11.6 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Physical Review X Pub Date : 2024-06-05 DOI:10.1103/physrevx.14.021038
Josefine Enkner, Lorenzo Graziotto, Felice Appugliese, Vasil Rokaj, Jie Wang, Michael Ruggenthaler, Christian Reichl, Werner Wegscheider, Angel Rubio, Jérôme Faist
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Abstract

The value of fundamental physical constants is affected by the coupling of matter to the electromagnetic vacuum state, as predicted and explained by quantum electrodynamics. In this work, we present a millikelvin magnetotransport experiment in the quantum Hall regime that assesses the possibility of the von Klitzing constant being modified by strong cavity vacuum fields. By employing a Wheatstone bridge, we measure the difference between the quantized Hall resistance of a cavity-embedded Hall bar and the resistance standard, achieving an accuracy down to one part in 105 for the lowest Landau level. While our results do not suggest any deviation that could imply a modified Hall resistance, our work represents pioneering efforts in exploring the fundamental implications of vacuum fields in solid-state systems.

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用空腔真空场测试冯-克里琴常数的正则化
正如量子电动力学所预测和解释的那样,基本物理常数的值受物质与电磁真空状态耦合的影响。在这项工作中,我们提出了量子霍尔机制下的毫开尔文磁传输实验,以评估冯-克里琴常数被强空腔真空场改变的可能性。通过使用惠斯通电桥,我们测量了嵌入空腔的霍尔条的量子化霍尔电阻与电阻标准之间的差异,在最低朗道电平上实现了低至 105 分之一的精度。虽然我们的结果并没有显示出任何可能意味着修改过的霍尔电阻的偏差,但我们的工作代表了在探索固态系统中真空场的基本影响方面的开创性努力。
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来源期刊
Physical Review X
Physical Review X PHYSICS, MULTIDISCIPLINARY-
CiteScore
24.60
自引率
1.60%
发文量
197
审稿时长
3 months
期刊介绍: Physical Review X (PRX) stands as an exclusively online, fully open-access journal, emphasizing innovation, quality, and enduring impact in the scientific content it disseminates. Devoted to showcasing a curated selection of papers from pure, applied, and interdisciplinary physics, PRX aims to feature work with the potential to shape current and future research while leaving a lasting and profound impact in their respective fields. Encompassing the entire spectrum of physics subject areas, PRX places a special focus on groundbreaking interdisciplinary research with broad-reaching influence.
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