发表机构
Institute for Basic Science; RIKEN Center for Quantum Computing; Oskar Klein Centre, Department of Physics, Stockholm University; Johannes Gutenberg-Universität Mainz; Helmholtz Institute Mainz; Department of Physics, Seoul National University; Department of Applied Physics, Graduate School of Engineering, The University of Tokyo（基础科学研究院; 理化学研究所量子计算中心; 斯德哥尔摩大学奥斯卡·克莱因物理中心; 美因茨约翰内斯古腾堡大学; 美因茨亥姆霍兹研究所; 首尔大学物理系; 东京大学大学院工学系研究科应用物理专业）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用辅助调谐的高阶模腔扩展了高质量轴子搜索，覆盖4.98-5.27 GHz，排除了接近KSVZ基准的耦合，验证了高阶模腔的可扩展性。
AI 中文摘要
基于TM$_{010}$模的传统高质量轴子光晕镜，随着谐振频率的增加，探测体积会减小。我们报告了一项扩展的轴子搜索，使用介电恢复的TM$_{020}$模腔光晕镜，并采用基于单自由度机械架构的对称保持辅助调谐。利用接近量子极限的微波接收器，我们搜索了4.98-5.07 GHz的频率范围，并以接近KSVZ基准的灵敏度排除了轴子-光子耦合。结合之前的两次搜索，目前的扫描扩展了基于该架构的多扫描计划，在4.98-5.27 GHz范围内提供了近300 MHz的连续高质量轴子覆盖，这是首次使用单个高阶模光晕镜报告的广泛搜索。这项工作确立了高阶模腔作为超越TM$_{010}$体积惩罚的实用、可扩展的路径。
英文摘要
Conventional high-mass axion haloscopes based on the TM$_{010}$ mode lose detection volume as the resonant frequency increases. We report an extended axion search using a dielectric-restored TM$_{020}$ cavity haloscope with symmetry-preserving auxetic tuning based on a single-degree-of-freedom mechanical architecture. Using a near-quantum-limited microwave receiver, we searched a frequency range of 4.98-5.07 GHz and exclude axion-photon couplings with sensitivity approaching the KSVZ benchmark. Together with two earlier searches, the present scans extend a multi-scan program based on this architecture, yielding nearly 300 MHz of contiguous high-mass axion coverage over 4.98-5.27 GHz, the first broad search reported with a single higher-order-mode haloscope. This work establishes higher-order-mode cavities as a practical, scalable route beyond the TM$_{010}$ volume penalty.
Comments5 pages, 5 figures, 2 tables
