基于里德堡原子的微波功率精密测量

doi:10.3969/j.issn.1000-1158.2019.05.01

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Abstract A new power measurement method based on the quantum coherence effect of Rydberg atoms is proposed. The low electromagnetic perturbation atomic vapor cell containing rubidium vapor is placed in the specific waveguide system. Based on Rydberg atomic quantum coherence effect, the guided wave electric field measurement is transformed into the detection of atomic absorption spectroscopy. A completely new microwave power measurement traceable to Planck constant and frequency measurement is realized by using the analytic quantization relationship between the power and the guided wave electric field. Compared with traditional power measurement at the frequency of 10.22GHz, the average deviation from -40dBm to -20dBm is 0.08dB (1.86%). The new microwave power quantum measurement method has the advantages of high sensitivity, large dynamic range and small measurement uncertainty. It is expected to form a new generation of microwave power standard that can lead to a direct SI-traceable approach for power metrology.

Key words： metrology microwave power Rydberg atoms quantum sensing atomic vapor cell

Received: 23 May 2019 Published: 01 September 2019

PACS:

TB973

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	Articles by authors
	ZHANG Jie
	SONG Zhen-fei
	LI Jun
	ZOU Hai-yang
	ZHANG Wan-feng
	LIU Zheng

Cite this article:

ZHANG Jie,SONG Zhen-fei,LI Jun, et al. Precision Measurement of Microwave Power Using Rydberg Atoms[J]. Acta Metrologica Sinica, 2019, 40(5): 749-754.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.05.01 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I5/749

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