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Theoretical and experimental study of a novel double-well optical dipole trap for two-species of cold atoms or molecules

Lu Jun-Fa Zhou Qi Pan Xiao-Qing Yin Jian-Ping

Theoretical and experimental study of a novel double-well optical dipole trap for two-species of cold atoms or molecules

Lu Jun-Fa, Zhou Qi, Pan Xiao-Qing, Yin Jian-Ping
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  • Received Date:  01 August 2013
  • Accepted Date:  06 September 2013
  • Published Online:  05 December 2013

Theoretical and experimental study of a novel double-well optical dipole trap for two-species of cold atoms or molecules

  • 1. College of Science, East China Institute of Technology, Jiangxi Fuzhou 344000, China;
  • 2. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;
  • 3. College of Science, Jiangxi University of Science and Technology, Jiangxi Ganzhou 341000, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 11274114, 10374029, 10674047), and the Foundation of State Key Laboratory of Precision Spectroscopy, China.

Abstract: A novel scheme based on light diffraction to generate a double-well optical trap for trapping and controlling two-species samples of cold atoms or molecules is proposed. Specialized phase modulation similar to the binary phase-grating is implemented in a diffraction device of liquid crystal spatial light modulator (LC-SLM). A continuous and reversible evolution between single-well trap and double-well trap is investigated. Corresponding experiments are performed and the results are in agreement with theories. Our results show that the proposed scheme has a controllability advantage, which is beneficial to the loading and controlling two-species samples in cold atoms or molecules experiments.

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