标题： 基于SNSPD的QROCODILE实验对暗物质的新探索 显示英文标题

标题： A New Bite Into Dark Matter with the SNSPD-Based QROCODILE Experiment

摘要： 我们展示了量子分辨率优化低温暗物质低能探测器（QROCODILE）的首次结果。QROCODILE实验使用基于微线的超导纳米线单光子探测器（SNSPD）作为暗物质散射和吸收的目标和传感器，对低至0.11 eV的能量沉积敏感。我们介绍了实验配置，并报告了对质量低至30 keV的亚MeV暗物质粒子相互作用的新世界领先限制。该系统的薄层结构在相互作用速率上提供了各向异性，实现了方向灵敏度。此外，我们利用探测器中声子与准粒子之间的耦合，同时对电子和核子的相互作用进行约束。我们讨论了未来几年提高实验能量阈值和有效体积的潜力。 显示英文摘要

摘要： We present the first results from the Quantum Resolution-Optimized Cryogenic Observatory for Dark matter Incident at Low Energy (QROCODILE). The QROCODILE experiment uses a microwire-based superconducting nanowire single-photon detector (SNSPD) as a target and sensor for dark matter scattering and absorption, and is sensitive to energy deposits as low as 0.11 eV. We introduce the experimental configuration and report new world-leading constraints on the interactions of sub-MeV dark matter particles with masses as low as 30 keV. The thin-layer geometry of the system provides anisotropy in the interaction rate, enabling directional sensitivity. In addition, we leverage the coupling between phonons and quasiparticles in the detector to simultaneously constrain interactions with both electrons and nucleons. We discuss the potential for improvements to both the energy threshold and effective volume of the experiment in the coming years.