通过混合磁振子-transmon量子比特系统探测马约拉子暗物质
Majoron dark matter detection via hybrid magnon transmon qubit system
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中文总结 AI 辅助
本文提出利用混合磁振子-transmon量子比特系统探测马约拉子暗物质，通过共振驱动YIG球体产生集体磁振子响应，经腔色散耦合至量子比特并用QND拉姆齐干涉测量，实现了对超轻玻色子场的高灵敏度量子传感方案。
中文摘要 AI 辅助
超轻马约拉子（Majoron）是动机良好的暗物质候选者，它们可以与电子自旋耦合，产生振荡的赝磁场。我们提出了一种混合磁振子-量子比特（magnon-qubit）卤化物探测器（haloscope），利用这种相互作用来搜寻马约拉子暗物质。在我们的方案中，马约拉子场共振驱动铁氧体钇铁石榴石（YIG）球体的基特尔（Kittel）模式，产生由大自旋系综增强的集体磁振子响应。所产生的磁振子布居通过腔介导的色散相互作用被转换到超导transmon量子比特，并利用量子非破坏（QND）拉姆齐干涉测量法进行探测。利用实验已验证的磁振子-腔-量子比特系统参数，我们推导了马约拉子诱导的信号，评估了预期灵敏度，并分析了通过磁场调谐实现的质量扫描策略，将预期探测范围与现有的关于轴子/马约拉子-电子耦合的实验室和天体物理约束进行了基准比较。我们的结果确立了混合磁振子-量子比特架构作为搜寻马约拉子暗物质以及更普遍地与电子自旋耦合的超轻玻色子场的有前景的量子传感平台。
英文摘要
Ultralight Majorons are well-motivated dark-matter candidates that can couple to electron spins, generating an oscillating pseudo-magnetic field. We propose a hybrid magnon-qubit haloscope that exploits this interaction to search for Majoron dark matter. In our scheme, the Majoron field resonantly drives the Kittel mode of a ferrimagnetic yttrium iron garnet (YIG) sphere, producing a collective magnon response enhanced by the large spin ensemble. The resulting magnon population is transduced to a superconducting transmon qubit through a cavity-mediated dispersive interaction and detected using quantum-nondemolition Ramsey interferometry. Using experimentally demonstrated parameters for magnon-cavity-qubit systems, we derive the Majoron-induced signal, evaluate the projected sensitivity, and analyze the corresponding mass-scan strategy enabled by magnetic-field tuning, benchmarking the projected reach against existing laboratory and astrophysical constraints on the axion/Majoron-electron coupling. Our results establish hybrid magnon-qubit architectures as a promising quantum-sensing platform for searches for Majoron dark matter and, more generally, ultralight bosonic fields coupled to electronic spins.
发表机构
- Tohoku University（东北大学）
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University（东北大学前沿跨学科科学研究机构）
- Institute of Physics, Vietnam Academy of Science and Technology (VAST)（越南科学技术院物理研究所）
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