Search for Dark Photon Dark Matter with a Mass around 36.1 μeV Using a Frequency-tunable Cavity Controlled through a Coupled Superconducting Qubit

2025/05/21 by Nakazono, Kan, Nakazono, K., S. Chen +23 · 4 citations
Engineering · Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Photocathodes and Microchannel Plates #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.2505.15619

openalex publication_date 2025/05/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

We report the results of a search for dark photon dark matter using a cavity that employs a transmon qubit as a frequency tuner. The tuning mechanism utilizes the energy level shift arising from the mode mixing between the qubit and the cavity mode. This method is advantageous as it avoids the frictional heating and electromagnetic leakage associated with mechanical tuning. We searched for a dark matter signal in the mass range 36.132 - 36.179 μeV and found no significant evidence. As a result, we set the exclusion limit on the kinetic mixing parameter down to approximately 5 × 10^-13, surpassing the existing limit set by cosmology.

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