首页|Rydberg-Atom Terahertz Heterodyne Receiver with Ultrahigh Spectral Resolution

Rydberg-Atom Terahertz Heterodyne Receiver with Ultrahigh Spectral Resolution

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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±0.09 µV·cm-1·Hz-1/2 for electric field measurements.The calibrated linear dynamical range spans approximately 89 dB,ranging from-110dBV/cm to-21dBV/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 mag-nitude 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.

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

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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 U

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

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国家重点研发计划Key-Area Research and Development Program of Guangdong Province,ChinaKey-Area Research and Development Program of Guangdong Province,China国家自然科学基金国家自然科学基金国家自然科学基金Innovation Program for Quantum Science and Technology广东省自然科学基金

2021YFA14020042019B0303300012020B03010300081222540512204182U20A20742021ZD03017052022A1515012026

2024

10.1088/0256-307X/41/8/084201

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(8)