| Magnetic focusing of cold atomic beam with a 2D array of current-carrying wires |
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| 作者姓名： | 刘泱 恽旻 印建平 |
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| 作者单位： | Key Laboratory for Optical and Magnetic Resonance Spectroscopy Department of Physics East China Normal University，Key Laboratory for Optical and Magnetic Resonance Spectroscopy Department of Physics，East China Normal University，Key Laboratory for Optical and Magnetic Resonance Spectroscopy Department of Physics East China Normal University，Shanghai 200062，Shanghai 200062，Shanghai 200062 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (No.10174050, 10374029, and 10434060), the Shanghai Priority Academic Discipline,and the 211 Foundation of the Educational Ministry of China. |
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| 摘 要： | A new scheme to realize a two-dimensional (2D) array of magnetic micro-lenses for a cold atomic beam, formed by an array of square current-carrying wires, is proposed. We calculate the spatial distributions of the magnetic fields from the array of current-carrying wires and the magnetic focusing potential for cold rubidium atoms, and study the dynamic focusing processes of cold atoms passing through the magnetic micro-lens array and its focusing properties by using Monte-Carlo simulations and trajectory tracing method. The result shows that the proposed micro-lens array can be used to focus effectively a cold atomic beam, even to load ultracold atoms or a BBC sample into a 2D optical lattice formed by blue detuned hollow beams.
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