Theoretical Investigation on the Mechanism and Law of Broadband Terahertz Wave Detection Using Rydberg Quantum State

被引:6
作者
Zhou, Yanchen [1 ,2 ]
Peng, Ruijie [1 ,2 ]
Zhang, Jinbiao [1 ,2 ]
Zhang, Linjie [3 ]
Song, Zhenfei [4 ]
Feng, Zhigang [4 ]
Peng, Yan [1 ,2 ]
机构
[1] Univ Shanghai Sci & Technol, Terahertz Technol Innovat Res Inst, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China
[2] Univ Shanghai Sci & Technol, Shanghai Cooperat Innovat Ctr Terahertz Spect & I, Shanghai 200093, Peoples R China
[3] Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
[4] Natl Inst Metrol, Ctr Adv Measurement Sci, Beijing 100029, Peoples R China
来源
IEEE PHOTONICS JOURNAL | 2022年 / 14卷 / 03期
基金
中国国家自然科学基金;
关键词
Electric fields; Atomic measurements; Frequency measurement; Probes; Atomic beams; Measurement by laser beam; Energy states; NEP; rydberg atom; terahertz wave; terahertz detection; ELECTRIC-FIELD PROBE; VAPOR CELL; THZ; ATOMS;
D O I
10.1109/JPHOT.2022.3178190
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The bandwidth and sensitivity of traditional terahertz detection devices are limited by material properties and working temperature. Here, we proposed a four-level Rydberg atom detection method, which can realize real-time detection for the absolute strength of the terahertz electric field under room temperature with the detection bandwidth of 0-5 THz. By theoretical analysis and formula derivation, the relation among the terahertz electric field strength, excitation energy level, coupling photoelectric field strength, gas cell temperature and electromagnetically induced transparency (EIT) signal are studied in detailed. The NEP of this method is proven to be 10(-17) W/Hz(1/2) in the range of 0-1 THz, which is three orders of magnitude smaller than that of the traditional optimal thermal detection system. This research has important reference value for the later high-sensitivity detection and application development of terahertz waves
引用
收藏
页数:8
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