| ATOMIC AND MOLECULAR PHYSICS |
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Experimental Determination (～mHz) of the Ground-State Hyperfine Separation of Trapped 199Hg+ in a Hyperbolic Paul Trap |
| HE Yue-Hong1,2,3, SHE Lei1,2**, CHEN Yi-He1,2, YANG Yu-Na1,2,3, LIU Hao1,2,3, LI Jiao-Mei1,2** |
1Key Laboratory of Atomic Frequency Standards (KLAFS), Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
2State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
3Graduate School, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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HE Yue-Hong, SHE Lei, CHEN Yi-He et al 2012 Chin. Phys. Lett. 29 123201 |
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Abstract The Ramsey fringes on the ground-state hyperfine transition of 199Hg+ (ΔF=1, ΔmF=0) ions trapped in a hyperbolic Paul trap are firstly observed with the method of time-separated oscillatory fields. The full width at half maximum of central Ramsey fringes is about 25 mHz and the corresponding quality factor Q of the line is greater than 1012 for the trapped 199Hg+ microwave frequency standard. The hyperfine transition frequency shifted by magnetic field is also measured by the high-resolution Ramsey fringes. The final result is Δνhfs=40507347997.3(0.5) Hz, which is corrected to zero magnetic field.
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Received: 24 July 2012
Published: 04 March 2013
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