Speaker
Description
We present a search for hidden photon dark matter using superconducting qubits, based on the method proposed by our group (Moroi et al., Phys. Rev. Lett. 131, 211001 (2023)). Hidden photon dark matter induces an AC electric field through kinetic mixing with ordinary photons. This electric field can excite a qubit on resonance. Assuming that fake excitations form an approximately frequency-independent background, a narrow dark matter signal can be detected as an excess in the excitation rate by sweeping the frequency of tunable qubits. To determine the excitation rate at each frequency, we repeatedly let the qubit idle for a fixed time and measure its state. In this talk, we report our experimental results to date and discuss ongoing efforts to improve the detector sensitivity based on these results.
| Primary Abstract Topic | Experiment: Axions and Wave-Like-DM |
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