Nanoscale guiding for cold atoms based on surface plasmons alongtips of metallic wedges
Wang Zheng-Ling (王正岭)a, Tang Wei-Min (唐伟民)a, Zhou Ming (周明)b c, Gao Chuan-Yu (高传玉)b
a Department of Physics, Faculty of Science, Jiangsu University, Zhenjiang 212013, China; b Center for Photon Manufacturing Science and Technology, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China; c State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
Abstract We propose a novel scheme to guide neutral cold atoms in a nanoscale region based on surface plasmons (SPs) of one pair and two pairs of tips of metallic wedges with locally enhanced light intensity and sub-optical wavelength resolution. We analyze the near-field intensity distribution of the tip of the metallic wedge by the FDTD method, and study the total intensity as well as the total potential of optical potentials and van der Waals potentials for 87Rb atoms in the light field of one pair and two pairs of tips of metallic wedges. It shows that the total potentials of one pair and two pairs of tips of metallic wedges can generate a gravito-optical trap and a dark closed trap for nanoscale guiding of neutral cold atoms. Guided atoms can be cooled with efficient intensity-gradient Sisyphus cooling by blue-detuned light field. This provides an important step towards the generation of hybrid systems consisting of isolated atoms and solid devices.
(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB013004), the National Natural Science Foundation of China (Grant No. 50975128), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK2011462), and the Postdoctoral Science Foundation of China (Grant No. 20100481093).
Corresponding Authors:
Wang Zheng-Ling
E-mail: zlwang@ujs.edu.cn
Cite this article:
Wang Zheng-Ling (王正岭), Tang Wei-Min (唐伟民), Zhou Ming (周明), Gao Chuan-Yu (高传玉) Nanoscale guiding for cold atoms based on surface plasmons alongtips of metallic wedges 2013 Chin. Phys. B 22 073701
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Integrated, reliable laser system for an 87Rb cold atom fountain clock Zhen Zhang(张镇), Jing-Feng Xiang(项静峰), Bin Xu(徐斌), Pan Feng(冯盼), Guang-Wei Sun(孙广伟),Yi-Ming Meng(孟一鸣), Si-Min-Da Deng(邓思敏达), Wei Ren(任伟),Jin-Yin Wan(万金银), and De-Sheng Lü(吕德胜). Chin. Phys. B, 2023, 32(1): 013202.
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