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In the last few years, direct detection of light sub-GeV dark matter has emerged as a frontier research area. Because of its low energy scales, many condensed matter systems have been proposed as possible target materials. In this talk, I'll briefly review the mechanisms behind a few of them, and introduce two novel ideas. First, to use superconducting quantum devices to measure the power deposition from dark matter scattering. I'll show that the existing data already put competitive limits on the dark matter-nucleon interaction. I'll also describe how bilayer graphene with voltage-tunable band gap can be used to probe sub-MeV dark matter-electron scattering with promising future prospects. |