Qubit based detectors for sensing CENNS interactions

The SONIQ (Sensing of Neutrinos In Qubits) collaboration aims to build arrays of superconducting qubits capable of detecting meV-scale energy deposits arising from neutrino-nucleus scattering interactions within a bulk target. We outline development of these sensors, targeting sub-eV resolution on a kg-scale germanium target. We discuss current work, touching on qubit design, the use of low Tc material for quasiparticle trapping, readout strategies, noise sources, and multiple approaches to calibrating very low energy deposits. Further, we present preliminary results garnered from aluminum sensors on gram-scale silicon substrates, demonstrating both the potential of this scheme as well as outstanding challenges in achieving our ultimate sensitivity goal.