基于薄金属圆盘近场衍射的固态-原子混合系统

doi:10.16180/j.cnki.issn1007-7820.2020.04.005

Abstract

Abstract:

In order to realize the confinement of cold atoms on the surface of nano-devices and thoroughly study the propagation law of disk vector diffraction in near field, the diffraction of the thin met al disk by a linearly polarized plane wave is studied by the finite element method. It was found that in the diffraction field, there was not only the incident field in the original polarization direction, but also the intensity distribution in the other two vertical directions. On this basis, A hybrid system of a thin met al disk coupled with atoms was proposed. A subwave well formed by a thin met al disk vector diffraction in the near field, which could trap the small number of cold atoms within 100 nanometers. The trapped distance and volume of the potential well could be controlled by changing the parameters of the disk. These results provided a new hybrid system scheme for micro-nano optical devices and atomic physics.

Key words: hybrid system, nanometre metal disk, vector diffraction, near field characteristic, atomic trapping, finite element

CLC Number:

TN29

NIE Zhifeng,WANG Zhengling. Solid-atom Hybrid System Based on Near-field Diffraction of a Thin Metal Circular Disk[J].Electronic Science and Technology, 2020, 33(4): 23-28.

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Solid-atom Hybrid System Based on Near-field Diffraction of a Thin Metal Circular Disk

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