里德伯原子的射频脉冲响应特性  

Response characteristics of radio frequency pulse of Rydberg atoms

作　　者：吴逢川 林沂 武博 付云起[1] Wu Feng-Chuan;Lin Yi;Wu Bo;Fu Yun-Qi(College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学电子科学学院,长沙410073

出　　处：《物理学报》2022年第20期288-294,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:12104509,61901495)资助的课题。

摘　　要：里德伯原子是一种高主量子数原子,利用其量子相干效应可以实现对空间中射频电场的测量.本文对基于里德伯原子的射频接收系统在不同脉宽和强度下的射频脉冲响应能力进行了研究.实验采用波长为852 nm和510 nm的激光实现Cs原子的激发,并利用射频信号源发射不同参数的脉冲信号照射里德伯原子,从原子气室中透射的探测光信号输入至光电探测器,经过光电转换得到的电信号由示波器进行记录.此外,利用不同延迟时间的脉冲信号进行模拟测距,初步证明基于里德伯原子的射频接收系统具备脉冲测距功能.Rydberg atom is an atom with a high principal quantum number.Its quantum coherence effect enables the measuring of radio frequency electric fields in space.In this work,the radio frequency pulse response characteristics of the radio frequency receiving system based on the Rydberg atom under different pulse widths and intensities are studied.In the experiment,lasers with wavelengths of 852 nm and 510 nm are used to excite cesium atoms.Moreover,a radio frequency source emits pulse signals with different parameters to irradiate Rydberg atoms.The probe signal transmitted from the atomic vapor cell is directed at the photodetector.Moreover,the oscilloscope records the electrical signal obtained by photoelectric conversion.In addition,the simulation ranging is performed by setting different pulse delay times through the fiber delay instrument.It preliminarily proves that the radio frequency receiving system based on Rydberg atoms has a function of pulse ranging.

关 键 词：里德伯原子 量子相干效应 脉冲 测距 

分 类 号：O562[理学—原子与分子物理]