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arXiv · 1906.08814

Exclusion Limits on Hidden-Photon Dark Matter near 2 neV from a Fixed-Frequency Superconducting Lumped-Element Resonator

A. Phipps·S. E. Kuenstner·S. Chaudhuri·C. S. Dawson·B. A. Young·C. T. FitzGerald·H. Froland·K. Wells·D. Li·H. M. Cho·S. Rajendran·P. W. Graham·K. D. Irwin
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Abstract

We present the design and performance of a simple fixed-frequency superconducting lumped-element resonator developed for axion and hidden photon dark matter detection. A rectangular NbTi inductor was coupled to a Nb-coated sapphire capacitor and immersed in liquid helium within a superconducting shield. The resonator was transformer-coupled to a DC SQUID for readout. We measured a quality factor of $\sim$40,000 at the resonant frequency of 492.027 kHz and set a simple exclusion limit on $\sim$2 neV hidden photons with kinetic mixing angle $\varepsilon\gtrsim1.5\times10^{-9}$ based on 5.14 hours of integrated noise. This test device informs the development of the Dark Matter Radio, a tunable superconducting lumped-element resonator which will search for axions and hidden photons over the 100 Hz to 300 MHz frequency range.

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A. Phipps, S. E. Kuenstner, S. Chaudhuri, C. S. Dawson, B. A. Young, C. T. FitzGerald, H. Froland, K. Wells, D. Li, H. M. Cho, S. Rajendran, P. W. Graham, K. D. Irwin. 2019-06-20. Exclusion Limits on Hidden-Photon Dark Matter near 2 neV from a Fixed-Frequency Superconducting Lumped-Element Resonator. https://arxiv.org/abs/1906.08814

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