Two kinematic behaviors of a Bose-Einstein condensate passing a Gaussian laser field

Xin Wen; Changde Hu; Rongzhen Zhu; Huafang Geng

doi:10.1117/12.3006434

26 September 2023 Two kinematic behaviors of a Bose-Einstein condensate passing a Gaussian laser field

Xin Wen, Changde Hu, Rongzhen Zhu, Huafang Geng

Proceedings Volume 12793, International Conference on Mechatronics and Intelligent Control (ICMIC 2023); 127930O (2023) https://doi.org/10.1117/12.3006434
Event: International Conference on Mechatronics and Intelligent Control (ICMIC2023), 2023, Wuhan, China

Abstract

With the maturation of experimental laser cooling and atom trapping techniques, various types of atomic optical devices developed by using cold atoms as media have been born in recent years, which play an important role in the field of atomic physics. In atomic optics, Bose-Einstein condensation (BEC) has been one of the hot topics in the study of scientists. It describes the phenomenon that bosons are concentrated in the lowest energy quantum state at extremely low temperatures. In general, atomic BEC can be expressed in the form of quantum wave packet. On the basis of previous studies, two kinds of motion behaviors of Bose-Einstein condensates passing through Gaussian laser field are investigated in this paper, namely the motion phenomena of atoms under the acceleration field and the S-wave scattering collision between atoms. The atomic motion equation is derived by establishing the theoretical model, and then the numerical simulation is carried out by MATLAB program. The results show that the acceleration field only affects the velocity of the wave packet. The attractive interatomic collision will cause the collapse of the wave packet. On the contrary, the repulsion will accelerate the diffusion of the wave packet. These results will provide more theoretical and feasible schemes for studying the coherent manipulation of atoms and laser in the future.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xin Wen, Changde Hu, Rongzhen Zhu, and Huafang Geng "Two kinematic behaviors of a Bose-Einstein condensate passing a Gaussian laser field", Proc. SPIE 12793, International Conference on Mechatronics and Intelligent Control (ICMIC 2023), 127930O (26 September 2023); https://doi.org/10.1117/12.3006434

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KEYWORDS

Chemical species

Blue lasers

Laser scattering

Modulation

Red lasers

Quantum fields

Bosons

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