Axion search with quantum nondemolition detection of magnons
High Energy Physics - Experiment2022-05-24v4Cosmology and Nongalactic AstrophysicsHigh Energy Physics - PhenomenologyInstrumentation and DetectorsQuantum Physics
The axion provides a solution for the strong CP problem and is one of the leading candidates for dark matter. This paper proposes an axion detection scheme based on quantum nondemolition detection of magnon, i.e., quanta of collective spin excitations in solid, which is expected to be excited by the axion-electron interaction predicted by the Dine-Fischer-Srednicki-Zhitnitsky (DFSZ) model. The prototype detector is composed of a ferrimagnetic sphere as an electronic spin target and a superconducting qubit. Both of these are embedded inside a microwave cavity, which leads to a coherent effective interaction between the uniform magnetostatic mode in the ferrimagnetic crystal and the qubit. An upper limit for the coupling constant between an axion and an electron is obtained as gaee<2.6×10−6 at the 95% confidence level for the axion mass of 33.117μeV <ma<33.130μeV.
@article{arxiv.2102.08764,
title = {Axion search with quantum nondemolition detection of magnons},
author = {Tomonori Ikeda and Asuka Ito and Kentaro Miuchi and Jiro Soda and Hisaya Kurashige and Yutaka Shikano},
journal= {arXiv preprint arXiv:2102.08764},
year = {2022}
}