论文标题
波导耦合的Rydberg频谱分析仪从0到20 GHz
Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GHz
论文作者
论文摘要
我们展示了基于与平面微波波指导的热rydberg原子的原子射频（RF）接收器和频谱分析仪。我们使用非谐振的RF杂种技术来实现从DC到20 GHz的载体频率的连续操作。该系统具有高达-120（2）DBM/Hz，DC耦合，4 MHz瞬时带宽和超过80 dB的线性动态范围的内在灵敏度。通过通过低噪声前置放大器连接，我们展示了高性能频谱分析，峰值灵敏度高于-145 dbm/hz。 Spectrum Analyzer连接标准的兔毛角天线，检测到弱环境信号，包括FM无线电，AM无线电，Wi-Fi和蓝牙。我们还通过非破坏性探测波导 - 原子的相互作用来展示热rydberg集合的波导读物。该系统为超过标准RF传感器，接收器和分析仪的敏感性，带宽和精确限制的小型室温，基于合奏的Rydberg传感器打开了门。
We demonstrate an atomic radio-frequency (RF) receiver and spectrum analyzer based on thermal Rydberg atoms coupled to a planar microwave waveguide. We use an off-resonant RF heterodyne technique to achieve continuous operation for carrier frequencies ranging from DC to 20 GHz. The system achieves an intrinsic sensitivity of up to -120(2) dBm/Hz, DC coupling, 4 MHz instantaneous bandwidth, and over 80 dB of linear dynamic range. By connecting through a low-noise preamplifier, we demonstrate high-performance spectrum analysis with peak sensitivity of better than -145 dBm/Hz. Attaching a standard rabbit-ears antenna, the spectrum analyzer detects weak ambient signals including FM radio, AM radio, Wi-Fi, and Bluetooth. We also demonstrate waveguide-readout of the thermal Rydberg ensemble by non-destructively probing waveguide-atom interactions. The system opens the door for small, room-temperature, ensemble-based Rydberg sensors that surpass the sensitivity, bandwidth, and precision limitations of standard RF sensors, receivers, and analyzers.
