发表机构
Princeton University（普林斯顿大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文利用金刚石氮空位中心系综的宽场成像与光学耗尽调谐，实现动量分辨的量子噪声谱学，用于测量强关联物质中多尺度磁涨落。
AI 中文摘要
时空多尺度涨落主导并表征了强关联物质的涌现性质、相边界和低能激发。然而，捕捉这些动力学过程仍是一项重大实验挑战，因为传统探针通常要么具有高空间分辨率，要么具有高时间分辨率，但无法同时具备两者。在此，我们利用密集金刚石氮空位中心系综的高保真宽场成像，测量磁涨落的动量与频率功率谱密度。为了访问衍射极限以下的空间波矢，我们通过光学耗尽连续调节传感体积。该方法能够在三个数量级的空间尺度及可调频带上研究平衡态和驱动涨落，为绘制关联系统中的低能、长波长涨落提供了直接手段。
英文摘要
Spatiotemporal fluctuations across multiple scales govern and characterize the emergent properties, phase boundaries, and low-energy excitations of strongly correlated matter. However, capturing these dynamics has remained a major experimental challenge, as conventional probes typically offer either high spatial or temporal resolution, but not both simultaneously. Here, we leverage high-fidelity wide-field imaging of dense diamond nitrogen vacancy center ensembles to measure the momentum and frequency power spectral density of magnetic fluctuations. To access spatial wavevectors below the diffraction limit, we tune the sensing volume continuously through optical depletion. This approach enables study of equilibrium and driven fluctuations across three orders of magnitude in spatial scale and tunable frequency bands, providing a direct means to map low-energy, long-wavelength fluctuations in correlated systems.
