Quantum Science and the Search for Axion Dark Matter
Quantum Science and the Search for Axion Dark Matter
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DOI：
10.1103/prxquantum.4.020101
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发表时间：
2023-04
期刊：
影响因子：
9.7
通讯作者：
A. Sushkov
中科院分区：
文献类型：
--
作者：
A. Sushkov
暗物质之谜是现代物理学中最重要的开放性问题之一。超轻轴子是一种动机良好的暗物质候选者，被认为是为了解决量子色动力学的强cp问题。许多精密实验正在寻找类轴子暗物质的三种非引力相互作用。有些搜索的灵敏度已经接近基本的量子极限。本展望描述了几种使用量子工程来规避这些限制的方法。压缩和单光子计数可以增强对轴-光子相互作用的搜索。优化量子自旋系综性质是实现基于自旋搜索轴子暗物质的电偶极矩和梯度相互作用的全部潜力的必要条件。在量子信息科学领域发展起来的几种计量和传感技术，正在实验基础物理学的这一领域找到自然的应用。
The dark matter puzzle is one of the most important open problems in modern physics. The ultra-light axion is a well-motivated dark matter candidate, conceived to resolve the strong-CP problem of quantum chromodynamics. Numerous precision experiments are searching for the three non-gravitational interactions of axion-like dark matter. Some of the searches are approaching fundamental quantum limits on their sensitivity. This Perspective describes several approaches that use quantum engineering to circumvent these limits. Squeezing and single-photon counting can enhance searches for the axion-photon interaction. Optimization of quantum spin ensemble properties is needed to realize the full potential of spin-based searches for the electric-dipole-moment and the gradient interactions of axion dark matter. Several metrological and sensing techniques, developed in the field of quantum information science, are finding natural applications in this area of experimental fundamental physics.