基于里德堡原子天线混频的微波相位噪声影响测量  

Microwave Phase Noise Influence Measurement Based on Rydberg Atomic Antenna Mixing

作　　者：班小娟 苏楠[1] 刘瑶[1] 牛琦琦 何军[1,2] 王军民 BAN Xiao-juan;SU Nan;LIU Yao;NIU Qi-qi;HE Jun;WANG Jun-min(State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Opto-Electronics,Shanxi University,Taiyuan 030006,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)

机构地区：[1]量子光学与光量子器件国家重点实验室山西大学光电研究所,山西太原030006 [2]山西大学极端光学协同创新中心,山西太原030006

出　　处：《量子光学学报》2023年第2期51-58,共8页Journal of Quantum Optics

基　　金：国家重点研发计划课题(2021YFA1402002);国家自然科学基金项目(61875111);山西省1331工程重点项目资助课题(133KSC)。

摘　　要：本文理论分析和实验测量研究了微波相位噪声对里德堡原子天线微波混频信号的影响。通过研究微波混频信号的相位噪声项,建立在信号场中加入相位噪声后微波混频信号强度变化的理论模拟图。实验基于室温铯原子气室中里德堡原子电磁感应透明光谱,实现里德堡原子|64S_(1/2)>→|64P_(1/2)>态的电偶极跃迁,得到频率13.806 057 GHz与13.806 000 GHz的微波场混频信号。同时,对混频信号强度的参数依赖关系进行研究。经实验发现,基于里德堡原子天线微波混频信号强度与参考场的功率有关,优化功率参数条件下,参考场可以实现约20 d B的混频信号增强;当参考场调控里德堡原子达到微波混频效率最大时,在信号场中加入相位噪声,会导致混频信号强度的显著降低。It is significant to study the influence of microwave phase noise on the microwave mixing signals with cesium Rydberg atomic antenna.In this paper,the influence of microwave phase noise on the microwave mixing signals based on Rydberg atom is studied theoretically and experimentally.Theoretically,the function of the change of the microwave mixing signal intensity after adding phase noise to the signal field is obtained by summarizing the phase noise term detected by the transmission of the probe laser through the medium.We perform a theoretical diagram that simulates the transmission spectrum of the probe laser as a function of input phase noise.From the theoretical simulation diagram,it can be seen that the microwave mixing signal based on the Rydberg atomic antenna increases with increasing power of the signal field.For the same signal field strength,the microwave mixing signal gradually decreases with the phase noise added increasing.Experimentally,we build an atomic antenna based on the Rydberg atom,which manipulates the Rydberg atom through a reference field,and the Rydberg atom transmits the frequency of the microwave mixing signal directly to the probe laser.Microwave field frequencies of 13.806057 GHz and 13.806000 GHz are mixed based on the Rydberg atomic electric dipole transition of |64S_(1/2)>→|64P_(1/2)>under electromagnetically induced transparency(EIT)spectroscopy of Rydberg atoms in a cesium atomic gas chamber at room temperature.The parameter dependence of the microwave mixing signal intensity was studied by using the Rydberg-EIT spectroscopy.The experimental results show that the microwave mixing signal intensity based on the Rydberg atomic antenna is related to the power of the reference field,the microwave mixing signals enhancement of about 20 dB can be achieved in the reference field under the condition of optimizing the power parameters.When the reference field manipulates the Rydberg atoms to the maximum microwave mixing efficiency,phase noise is added to the signal field.It has been fou

关 键 词：里德堡原子天线 相位噪声 微波混频信号 电磁感应透明 

分 类 号：O433.1[机械工程—光学工程]