第一作者：Kai Wei
通讯作者：Wei Ji,Jia Liu,Jiancheng Fang
发表刊物：Reports on Progress in Physics
关键字：Reports on Progress in Physics 88,5,057801 (2025)。 本工作获得英国物理学会Physics World报道“A break through in the hunt for dark matter”！并入选WoS高被引期刊。 桌面型量子传感技术的最新进展，为探测暗物质的非引力相互作用提供了可行手段。传统轴子暗物质实验依赖窄带共振机制，若要覆盖较大质量区间，需耗费大量扫频时间。本文基于碱金属 - 氖 - 21 自旋体系，提出一种宽带探测方案。我们在该体系中区分出两种不同的杂化自旋耦合工作模式：低频段的自补偿模式与高频段的杂化自旋共振模式。相较于传统核磁共振技术，利用这两种模式可在保持探测灵敏度的同时，大幅拓宽氖 - 21 核自旋的测量带宽。本研究开展了针对类轴子暗物质的全域宽带搜寻，康普顿频率覆盖100~1000 Hz区间，跨度达 5 个数量级。结合暗物质随机涨落效应，我们对轴子暗物质与中子、质子的相互作用强度划定了全新约束。在 0.02~4 Hz 频率范围内，轴子 - 中子耦合强度上限降至3E-10，优于现有天体物理结果；且在 10~100 Hz 频段，该结果创下目前实验室探测的最严格约束。 Recent advances in tabletop quantum sensor technology have enabled searches for nongravitational interactions of dark matter (DM). Traditional axion DM experiments rely on sharp resonance, resulting in extensive scanning time to cover a wide mass range. In this work, we present a broadband approach in an alkali-21Ne spin system. We identify two distinct hybrid spin-coupled regimes: a self-compensation regime at low frequencies and a hybrid spin resonance regime at higher frequencies. By utilizing these two distinct regimes, we significantly enhance the bandwidth of 21Ne nuclear spin compared to conventional nuclear magnetic resonance, while maintaining competitive sensitivity. We present a comprehensive broadband search for axion-like DM, covering 5 orders of magnitude of Compton frequencies range within [100, 1000] Hz. We set new constraints on the axion DM interactions with neutrons and protons, ccounting for the effects of DM stochasticity. For the axion–neutron coupling, our results reach a low value of |gann| ⩽ 3E-10 in the frequency range [0.02, 4] Hz surpassing astrophysical limits and providing the strongest laboratory constraints in the [10, 100] Hz range.
卷号：88
发布期刊链接：https://iopscience.iop.org/article/10.1088/1361-6633/adca52
合写作者：Zitong Xu,Yuxuan He,Xiaolin Ma,Xing Heng,Xiaofei Huang,Wei Quan,Xiao-Ping Wang,Dmitry Budker