摘要
Preparation and control of cold molecules are advancing rapidly, motivated by many exciting applications ranging from tests of fundamental physics to quantum information processing. Here, we propose a trapping scheme to create high-density cold molecular samples by using a combination of electric and magnetic fields. In our theoretical analysis and numerical calculations, a typical alkaline-earth monofluoride, MgF, is used to test the feasibility of our proposal.A cold MgF molecular beam is first produced via an electrostatic Stark decelerator and then loaded into the proposed electromagnetic trap, which is composed of an anti-Helmholtz coil, an octupole, and two disk electrodes. Following that,a huge magnetic force is applied to the molecular sample at an appropriate time, which enables further compressing of the spatial distribution of the cold sample. Molecular samples with both higher number density and smaller volume are quite suitable for the laser confinement and other molecular experiments such as cold collisions in the next step.
作者
Ya-Bing Ji
Bin Wei
Heng-Jiao Guo
Qing Liu
Tao Yang
Shun-Yong Hou
Jian-Ping Yin
纪亚兵;魏斌;郭恒娇;刘青;杨涛;侯顺永;印建平(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200241,China;Key Laboratory of Nondestructive Test(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,China;Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China)
基金
Project supported by the National Natural Science Foundation of China (Grant Nos. 91536218, 11874151, and 11834003)
the Fundamental Research Funds for the Central Universities, China
the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, China
the Young Top-Notch Talent Support Program of Shanghai, China。
