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arXiv · 2110.01586

New constraints on dark matter from superconducting nanowires

Yonit Hochberg·Benjamin V. Lehmann·Ilya Charaev·Jeff Chiles·Marco Colangelo·Sae Woo Nam·Karl K. Berggren
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Abstract

Superconducting nanowires, a mature technology originally developed for quantum sensing, can be used as a target and sensor with which to search for dark matter interactions with electrons. Here we report on a 180-hour measurement of a tungsten silicide superconducting nanowire device with a mass of 4.3 nanograms. We use this to place new constraints on dark matter--electron interactions, including the strongest terrestrial constraints to date on sub-MeV (sub-eV) dark matter that interacts with electrons via scattering (absorption) processes.

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Yonit Hochberg, Benjamin V. Lehmann, Ilya Charaev, Jeff Chiles, Marco Colangelo, Sae Woo Nam, Karl K. Berggren. 2022-12-20. New constraints on dark matter from superconducting nanowires. https://doi.org/10.1103/physrevd.106.112005

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