| ATOMIC AND MOLECULAR PHYSICS |
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Rabi Spectroscopy and Sensitivity of a Floquet Engineered Optical Lattice Clock |
| Mo-Juan Yin1†, Tao Wang2†, Xiao-Tong Lu1, Ting Li1, Ye-Bing Wang1, Xue-Feng Zhang2*, Wei-Dong Li3*, Augusto Smerzi3,4*, and Hong Chang1,5* |
1Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China
2Department of Physics, and Center of Quantum Materials and Devices, Chongqing University, Chongqing 401331, China
3Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China
4QSTAR, INO-CNR, and LENS, Largo Enrico Fermi 2, I-50125 Firenze, Italy
5School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
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| Cite this article: |
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Mo-Juan Yin, Tao Wang, Xiao-Tong Lu et al 2021 Chin. Phys. Lett. 38 073201 |
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Abstract We periodically modulate the lattice trapping potential of a $^{87}$Sr optical clock to Floquet engineer the clock transition. In the context of atomic gases in lattices, Floquet engineering has been used to shape the dispersion and topology of Bloch quasi-energy bands. Differently from these previous works manipulating the external (spatial) quasi-energies, we target the internal atomic degrees of freedom. We shape Floquet spin quasi-energies and measure their resonance profiles with Rabi spectroscopy. We provide the spectroscopic sensitivity of each band by measuring the Fisher information and show that this is not depleted by the Floquet dynamical modulation. The demonstration that the internal degrees of freedom can be selectively engineered by manipulating the external degrees of freedom inaugurates a novel device with potential applications in metrology, sensing and quantum simulations.
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Received: 08 May 2021
Published: 08 June 2021
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| PACS: |
32.70.Jz
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(Line shapes, widths, and shifts)
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32.80.Qk
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(Coherent control of atomic interactions with photons)
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32.80.Wr
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(Other multiphoton processes)
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31.15.Lc
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| Fund: Supported by the National Natural Science Foundation of China (Grant Nos. 61775220, 11804034, 11874094, 12047564, 11874247, 11874246), the Key Research Project of Frontier Science of the Chinese Academy of Sciences (Grant No. QYZDB-SSW-JSC004), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos. XDB21030100 and XDB35010202), the Special Foundation for Theoretical Physics Research Program of China (Grant No. 11647165), the Fundamental Research Funds for the Central Universities (Grant No. 2020CDJQY-Z003), the National Key R&D Program of China (Grant No. 2017YFA0304501), the 111 Project (Grant No. D18001), the Hundred Talent Program of the Shanxi Province (2018), and the EMPIR-USOQS, EMPIR Project co-funded by the European Unions Horizon2020 Research and Innovation Programme and the EMPIR Participating States. |
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Just Accepted Date: 18 June 2021
Online First Date: 08 June 2021
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