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New constraints on dark matter from superconducting nanowires
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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.
Forward citations
Cited by 4 Pith papers
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Dark Matter Weather: Probing Sub-GeV Interactions with Earth-Shielding Modulation
Daily Earth-shielding modulation of sub-GeV dark matter can separate dark-matter–electron from dark-matter–nucleon scattering, and the isoangle shape statistic provides a new validation handle for liquid-noble detectors.
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Unconventional Materials for Light Dark Matter Detection
TiSe2, Sr2RuO4, and hole-doped diamond are projected to improve sub-MeV dark matter detection reaches by one to three orders of magnitude over existing proposals, with directional sensitivity from their anisotropic responses.
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Light Dark Matter Detection with Sub-eV Transition-Edge Sensors
Optical transition-edge sensors with sub-eV thresholds are projected to probe unexplored light dark matter parameter space with nanogram-month exposures.
- First High-Throughput Evaluation of Dark Matter Detector Materials
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