Axion search with quantum nondemolition detection of magnons
Axion search with quantum nondemolition detection of magnons
复制标题
DOI：
10.1103/physrevd.105.102004
复制
发表时间：
2021-02
影响因子：
5
通讯作者：
T. Ikeda;Asuka Ito;K. Miuchi;J. Soda;Hisaya Kurashige;D. Lachance-Quirion;Yasunobu Nakamura;
中科院分区：
文献类型：
--
作者：
T. Ikeda;Asuka Ito;K. Miuchi;J. Soda;Hisaya Kurashige;D. Lachance-Quirion;Yasunobu Nakamura;
轴子为强CP问题提供了一种解决方案，是暗物质的主要候选者之一。本文提出了一种基于磁振子量子非破坏探测的轴子探测方案，即固体中集体自旋激发的量子数，预计将由Dine-Fischer-Sredicki-zhitnitsky(DFSZ)模型预测的轴子-电子相互作用激发。探测器原型由作为电子自旋靶的铁磁球和超导量子比特组成。这两者都被嵌入到微波腔中，这导致了铁磁晶体中的均匀静磁模与量子比特之间的相干有效相互作用。对于轴子质量为$33.117$$\MU$EV$的95置信度水平，得到了轴子与电子之间的耦合常数的上限为$g_(Aee)<；1.6×10^-7
The axion provides a solution for the strong CP problem and is one of the leading candidates for dark matter. This paper proposes an axion detection scheme based on quantum nondemolition detection of magnon, i.e., quanta of collective spin excitations in solid, which is expected to be excited by the axion-electron interaction predicted by the Dine-Fischer-Srednicki-Zhitnitsky (DFSZ) model. The prototype detector is composed of a ferromagnetic sphere as an electronic spin target and a superconducting qubit. Both of these are embedded inside a microwave cavity, which leads to a coherent effective interaction between the uniform magnetostatic mode in the ferromagnetic crystal and the qubit. An upper limit for the coupling constant between an axion and an electron is obtained as $g_{aee}<1.6\times10^{-7}$ at the 95\% confidence level for the axion mass of $33.117$$\mu$eV$