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Rabi Spectroscopy and Sensitivity of a Floquet Engineered Optical Lattice Clock 被引量:4
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作者 mo-juan yin Tao Wang +6 位作者 Xiao-Tong Lu Ting Li Ye-Bing Wang Xue-Feng Zhang Wei-Dong Li Augusto Smerzi Hong Chang 《Chinese Physics Letters》 SCIE CAS CSCD 2021年第7期29-33,共5页
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 dis... 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. 展开更多
关键词 SPECTROSCOPY TRANSITION QUASI
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Momentum-space crystal in narrow-line cooling of ^(87)Sr
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作者 Jian-Xin Han Ben-Quan Lu +4 位作者 mo-juan yin Ye-Bing Wang Qin-Fang Xu Xiao-Tong Lu Hong Chang 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第1期360-366,共7页
The discovery of the momentum space crystal based on the alkaline-earth atom ^(88)Sr in narrow-line cooling has paved the way to explore this novel physical phenomenon in other cold atom systems. In this paper, a mome... The discovery of the momentum space crystal based on the alkaline-earth atom ^(88)Sr in narrow-line cooling has paved the way to explore this novel physical phenomenon in other cold atom systems. In this paper, a momentum space crystal based on the fermions ^(87)Sr in narrow-line cooling of transition^1S_0–~3P_1 is demonstrated. We theoretically analyze and compare the formation principle of the narrow-line with that of broad-line cooling, and achieve the momentum space crystal in experiment. Beyond that we present a series of numerical calculations of those important parameters which influence the distribution and size of the momentum space crystal. Correspondingly, we vary the values of these parameters in experiment to observe the momentum space crystal evolution and distribution. The experimental results are in conformity with the results of the theoretically numerical calculations. These results and analyses provide a detailed supplementary study on the formation and evolution of momentum space crystal. In addition, this work could also give a guideline on atomic manipulation by narrow-line cooling. 展开更多
关键词 momentum space CRYSTAL narrow-line COOLING STRONTIUM
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