Magnetic field measurement based on a stimulated two-photon Raman transition |
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| Authors: | Zhou Zi-Chao Wei Rong Shi Chun-Yan Li Tang and Wang Yu-Zhu |
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| Affiliation: | Key Laboratory of Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | The magnetic field in the microwave interaction zone of the fountain atomic clock was measured by stimulated Raman transitions. By measuring the two-photon transition frequency between the Zeeman levels of the two ground states, we achieved a magnetic field measurement accuracy of the order of 0.28 nT. This method is immune to the Doppler shift and the AC Stark shift. The second order Zeeman shift of the fountain clock is 170.7×10-15, with the uncertainty of 7.2×10-16. |
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| Keywords: | fountain atomic clock Raman transition second order Zeeman shift |
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