In this work, a microwave field is sensed by rubidium atoms instead of a conventional antenna like dipole or horn antenna. Microwave field is projected onto a glass cell containing Rb vapors which act as an antenna in this case. A four-level ladder atomic system is considered for analytical solution, and E-field measurement is reported by utilizing quantum phenomena like electromagnetically induced transparency and Autler–Townes splitting. It has been shown that atoms can also sense weak microwave field with this approach. The amplitude measurement of microwave E-field is changed to frequency measurement, and E-field is evaluated by monitoring the frequency difference between two EIT peaks. Measurement results are reported for variable input microwave power at frequency 15.09 GHz varying from 12.5 μW to 4 mW generated from synthesized signal generator. Moreover, the effect on the EIT resonance due to the distance variation of the source antenna is also discussed. The microwave frequency is detuned from the resonant frequency, and results are reported in this work.

在这项工作中，微波场是由of原子而不是像偶极天线或号角天线之类的传统天线感应的。微波场投射到包含Rb蒸气的玻璃池上，在这种情况下，Rb蒸气充当天线。考虑使用四级梯形原子系统作为分析解决方案，并通过利用电磁感应的透明性和奥特勒-唐兹分裂等量子现象来报告电场测量。已经证明，原子也可以用这种方法感应微弱的微波场。将微波电场的幅度测量更改为频率测量，并通过监视两个EIT峰之间的频率差来评估电场。报告了在15.09 GHz的可变输入微波功率下从12开始的测量结果。从合成信号发生器产生5μW至4 mW。此外，还讨论了源天线距离变化对EIT谐振的影响。微波频率与谐振频率失谐，结果报告在这项工作中。