| Rydberg electromagnetically induced transparency and Autler–Townes splitting in a weak radio-frequency electric field |
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| 作者姓名： | 郝丽萍 薛咏梅 樊佳蓓 焦月春 赵建明 贾锁堂 |
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| 基金项目： | Project supported by the National Key Research and Development Program of China(Grant No.2017YFA0304203);the National Natural Science Foundation of China(Grant Nos.61475090,61675123,61775124,and 11804202);the State Key Program of National Natural Science of China(Grant Nos.11434007 and61835007);the Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China(Grant No.IRT13076) |
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| 摘 要： | We utilize an electromagnetically induced transparency(EIT) of a three-level cascade system involving Rydberg state in a room-temperature cell, formed with a cesium 6 S1/2–6 P3/2–66 S1/2 scheme, to investigate the Autler–Townes(AT)splitting resulting from a 15.21-GHz radio-frequency(RF) field that couples the |66 S1/2 → |65 P1/2 Rydberg transition.The radio-frequency electric field induced AT splitting, γAT, is defined as the peak-to-peak distance of an EIT-AT spectrum.The dependence of AT splitting γAT on the probe and coupling Rabi frequency, ?_p and ?_c, is investigated. It is found that the EIT-AT splitting strongly depends on the EIT linewidth that is related to the probe and coupling Rabi frequency in a weak RF-field regime. Using a narrow linewidth EIT spectrum would decrease the uncertainty of the RF field measurements.This work provides new experimental evidence for the theoretical framework in [J. Appl. Phys. 121, 233106(2017)].
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| 关 键 词： | RYDBERG electromagnetically induced transparency-Autler–Townes (EIT-AT) cascade FOUR-LEVEL atom RADIO-FREQUENCY (RF) electric field |
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