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arXiv · 2512.17271

Detecting Axion Dark Matter with an Organic Molecular Maser

Hongliang Wu·Yuchen Han·Zhengtao Wang·Dezhi Zheng·Yeliang Wang·Liu Yang·Zhiwei Wang·Bo Zhang·Dmitry Budker·Jun Zhang
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Abstract

We present a novel quantum sensing approach to search for axion-electron interactions around the axion mass of 6 \mueV. In this region, laboratory searches are relatively scarce, and our direct experiment measuring the axion-electron coupling constant reaches the sensitivity of 8 \times 10^{-6} GeV^{-1}. The method, based on an organic molecular maser establishes a proof-of-principle for quantum-enhanced detection, with a corresponding magnetic field sensitivity of 0.85 fT/\sqrt{\rm{Hz}}. The methodology is generic and can be readily extended to other physical systems, further broadening its applicability in quantum sensing and dark matter searches.

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Hongliang Wu, Yuchen Han, Zhengtao Wang, Dezhi Zheng, Yeliang Wang, Liu Yang, Zhiwei Wang, Bo Zhang, Dmitry Budker, Jun Zhang. 2025-12-19. Detecting Axion Dark Matter with an Organic Molecular Maser. https://arxiv.org/abs/2512.17271

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