Rydberg-Atom Terahertz Heterodyne Receiver with Ultrahigh Spectral Resolution  

作　　者：Zhenyue She Xiaojie Zhu Yayi Lin Xianzhe Li Xiaolin Yang Yanfei Shang Yuqin Teng Haitao Tu Kaiyu Liao Caixia Zhang Xiaohong Liu Jiehua Chen Wei Huang 佘圳跃;祝孝杰;林雅益;李显喆;杨小林;尚燕飞;滕玉勤;涂海涛;廖开宇;张彩霞;刘笑宏;陈杰华;黄巍(Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education),School of Physics,South China Normal University,Guangzhou 510006,China;Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,South China Normal University,Guangzhou 510006,China;Guangdong-Hong Kong Joint Laboratory of Quantum Matter,Frontier Research Institute for Physics,South China Normal University,Guangzhou 510006,China;GPETR Center for Quantum Precision Measurement,South China Normal University,Guangzhou 510006,China;State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Atomic Frequency Standards,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China;Wuhan Institute of Quantum Technology,Wuhan 430206,China)

机构地区：[1]Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education),School of Physics,South China Normal University,Guangzhou 510006,China [2]Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,South China Normal University,Guangzhou 510006,China [3]Guangdong-Hong Kong Joint Laboratory of Quantum Matter,Frontier Research Institute for Physics,South China Normal University,Guangzhou 510006,China [4]GPETR Center for Quantum Precision Measurement,South China Normal University,Guangzhou 510006,China [5]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China [6]University of Chinese Academy of Sciences,Beijing 100049,China [7]Key Laboratory of Atomic Frequency Standards,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China [8]Wuhan Institute of Quantum Technology,Wuhan 430206,China

出　　处：《Chinese Physics Letters》2024年第8期17-21,共5页中国物理快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant No.2021YFA1402004);the Key-Area Research and Development Program of Guangdong Province,China(Grant Nos.2019B030330001 and 2020B0301030008);the National Natural Science Foundation of China(Grant Nos.12225405,12204182,and U20A2074);the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0301705);the Natural Science Foundation of Guangdong Province,China(Grant No.2022A1515012026).

摘　　要：Terahertz heterodyne receivers with high sensitivity and spectral resolution are crucial for various applications.Here,we present a room-temperature atomic terahertz heterodyne receiver that achieves ultrahigh sensitivity and frequency resolution.At a signal frequency of 338.7 GHz,we obtain a sensitivity of 2.88±0.09V·cm^(−1)·Hz^(−1/2) for electric field measurements.The calibrated linear dynamical range spans approximately 89 dB,ranging from−110 dBV/cm to−21 dBV/cm.We demodulate a 400 symbol stream encoded in 4-state phase-shift keying,demonstrating excellent phase detection capability.By scanning the frequency of the local oscillator,we realize a terahertz spectrometer with Hz level frequency resolution.This resolution is more than two orders of magnitude higher than that of existing terahertz spectrometers.The demonstrated terahertz heterodyne receiver holds promising potential for working across the entire terahertz spectrum,significantly advancing its practical applications.

关 键 词：MAGNITUDE holds RESOLUTION 

分 类 号：O441.4[理学—电磁学]