期刊
PHYSICAL REVIEW A
卷 103, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.103.063113
关键词
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资金
- National Key Research and Development Program of China [2017YFA0304900, 2017YFA0402300]
- Beijing Natural Science Foundation [1212014]
- National Natural Science Foundation of China [11604334, 11604177]
- Key Research Program of the Chinese Academy of Sciences [XDPB08-3]
- Fundamental Research Funds for the Central Universities
The study introduces a method using auxiliary microwave-dressed Rydberg atoms to extend the measurement range of microwave electric field strength from several mV/cm to μV/cm. This method can improve the accuracy and sensitivity of microwave electrometry.
The Rydberg electromagnetically induced transparency (EIT)-Autler Townes (AT) splitting proportional to the target microwave electric field strength is an atom-based primary traceable standard in microwave electrometry. The minimum detected microwave electric field is limited when the EIT-AT splitting is indistinguishable. We design a method for auxiliary microwave-dressed Rydberg atoms that extends the electrometric span. We theoretically and experimentally show that the low bound of the direct SI-traceable microwave electric field is extended by two orders of magnitude, which is from several mV/cm to mu V/cm in a room-temperate Rb cell with a modest setup.
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