标题： 多衣态工程化里德伯量子电测：实现100兆赫兹级瞬时带宽 显示英文标题

标题： Multi-Dress-State Engineered Rydberg Electrometry: Achieving 100-MHz-level Instantaneous-Bandwidth

摘要： 里德伯原子具有巨大的电偶极矩和可调的能级跃迁，为微波（MW）电场传感提供了卓越的潜力，结合了高灵敏度和宽频率覆盖范围。 然而，在基于里德伯的MW转换器中同时实现高灵敏度和宽瞬时带宽仍然是一个关键挑战。 在此，我们提出了一种多 Dress 态工程超外差检测方案，用于里德伯电测，该方案利用了与失谐相关的双峰响应结构和由拉比频率驱动的下垂效应，以克服瞬时带宽的限制。 通过有策略地工程化里德伯原子的多个 Dress 态，我们展示了一个基于热$\mathrm{^{87}Rb}$蒸汽的转换器，其灵敏度达到记录水平$\mathrm{140.4\,nV\,cm^{-1}\,Hz^{-1/2}}$，瞬时带宽高达54.6$\,$MHz。 在某些应用领域，性能指标现在已接近现代MW接收器（100-MHz级别）的实际要求。 这一进展弥合了原子传感与实际应用之间的差距，为里德伯原子技术在雷达、无线通信和频谱监测中的应用铺平了道路。 显示英文摘要

摘要： Rydberg atoms, with their giant electric dipole moments and tunable energy-level transitions, offer exceptional potential for microwave (MW) electric field sensing, combining high sensitivity and broad frequency coverage. However, simultaneously achieving high sensitivity and wide instantaneous bandwidth in a Rydberg-based MW transducer remains a critical challenge. Here, we propose a multi-dress-state engineered superheterodyne detection scheme for Rydberg electrometry that exploits a detuning-dependent dual-peak response structure and a Rabi-frequency-driven dip-lifting effect to overcome the limitation on instantaneous bandwidth. By strategically engineering the multiple dress states of Rydberg atoms, we demonstrate a thermal $\mathrm{^{87}Rb}$ vapor-based transducer with a record sensitivity of $\mathrm{140.4\,nV\,cm^{-1}\,Hz^{-1/2}}$ and an instantaneous bandwidth of up to 54.6$\,$MHz. The performance metrics are now approaching the practical requirements of modern MW receivers (100-MHz-level) in certain application fields. This advancement bridges the gap between atomic sensing and real-world applications, paving the way for Rydberg-atom technologies in radar,wireless communication, and spectrum monitoring.