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arXiv · 1912.11048

Axion Dark Matter Detection by Superconducting Resonant Frequency Conversion

Asher Berlin·Raffaele Tito D'Agnolo·Sebastian A. R. Ellis·Christopher Nantista·Jeffrey Neilson·Philip Schuster·Sami Tantawi·Natalia Toro·Kevin Zhou
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Abstract

We propose an approach to search for axion dark matter with a specially designed superconducting radio frequency cavity, targeting axions with masses $m_a \lesssim 10^{-6} \text{ eV}$. Our approach exploits axion-induced transitions between nearly degenerate resonant modes of frequency $\sim$ GHz. A scan over axion mass is achieved by varying the frequency splitting between the two modes. Compared to traditional approaches, this allows for parametrically enhanced signal power for axions lighter than a GHz. The projected sensitivity covers unexplored parameter space for QCD axion dark matter for $10^{-8} \text{ eV} \lesssim m_a \lesssim10^{-6} \text{ eV}$ and axion-like particle dark matter as light as $m_a \sim 10^{-14} \text{ eV}$.

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Asher Berlin, Raffaele Tito D'Agnolo, Sebastian A. R. Ellis, Christopher Nantista, Jeffrey Neilson, Philip Schuster, Sami Tantawi, Natalia Toro, Kevin Zhou. 2019-12-23. Axion Dark Matter Detection by Superconducting Resonant Frequency Conversion. https://doi.org/10.1007/jhep07(2020)088

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