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journal article·2021-08-01Open access

Using amplitude modulation of the microwave field to improve the sensitivity of Rydberg-atom based microwave electrometry

Xiubin Liu, Fengdong Jia, Huaiyu Zhang, Jiong Mei, Yonghong Yu, Weichen Liang, Jian Zhang, Feng Xie, Zhiping Zhong

AIP Advances· Volume 11· Issue 8
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Source abstract

Abstract

The microwave (MW) field can be measured by the Autler–Townes (AT) splitting of the electromagnetically induced transparency (EIT) spectrum in the Rydberg atomic system; however, the EIT-AT splitting method fails in weak MW fields. We used the amplitude modulation of the MW field to resolve the EIT-AT splitting in weak MW fields. The EIT-AT splitting interval can be directly obtained, and the minimum detectable MW strength is improved by six times compared with the traditional EIT-AT splitting method. The proposed method is more intuitive and convenient for measuring the strength of weak MW fields in practical applications.
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Research context

OpenAlex topics: Quantum optics and atomic interactions · Cold Atom Physics and Bose-Einstein Condensates · Atomic and Subatomic Physics Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Physical Sciences, University of Chinese Academy of Sciences 1 , Beijing 100049, China

Institute of Physics, Chinese Academy of Sciences 2 , Beijing 100190, China

Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University 3 , Beijing 100084, China

CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences 4 , Beijing 100190, China

Funding

National Key Research and Development Program of China · Beijing Natural Science Foundation of China · National Natural Science Foundation of China · Key Research Program of the Chinese Academy of Sciences · Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics · Fundamental Research Funds for the Central Universities

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