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Electrostatic surface trap for cold polar molecules on a chip |
| Wang Qin (王琴), Li Sheng-Qiang (李胜强), Hou Shun-Yong (侯顺永), Xia Yong (夏勇), Wang Hai-Ling (汪海玲), Yin Jian-Ping (印建平) |
| State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China |
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Abstract We propose a simple scheme for trapping cold polar molecules in low-field seeking states on the surface of a chip by using a grounded metal plate and two finite-length charged wires that half embanked in an insulating substrate, calculate the electric field distributions generated by our charged-wire layout in free space and the corresponding Stark potentials for ND3 molecules, and analyze the dependence of the trapping center position on the geometric parameters. Moreover, the loading and trapping processes of cold ND3 molecules are studied by using the Monte Carlo method. Our study shows that the loading efficiency of the trap scheme can reach 11.5%, and the corresponding temperature of the trapped cold molecules is about 26.4 mK.
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Received: 18 March 2013
Revised: 05 June 2013
Accepted manuscript online:
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PACS:
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37.10.Pq
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(Trapping of molecules)
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37.10.Mn
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(Slowing and cooling of molecules)
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37.10.Vz
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(Mechanical effects of light on atoms, molecules, and ions)
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37.20.+j
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(Atomic and molecular beam sources and techniques)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10674047, 10804031, 10904037, 10974055, 11034002, and 11274114), the National Basic Research Program of China (Grant Nos. 2006CB921604 and 2011CB921602), the Basic Key Program of Shanghai Municipality of China (Grant No. 07JC14017), and the Leading Academic Discipline Project of Shanghai Municipality of China (Grant No. B408). |
Corresponding Authors:
Yin Jian-Ping
E-mail: jpyin@phy.ecnu.edu.cn
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Cite this article:
Wang Qin (王琴), Li Sheng-Qiang (李胜强), Hou Shun-Yong (侯顺永), Xia Yong (夏勇), Wang Hai-Ling (汪海玲), Yin Jian-Ping (印建平) Electrostatic surface trap for cold polar molecules on a chip 2014 Chin. Phys. B 23 013701
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