| The dynamics of triple-well trapped Bose-Einstein condensates with atoms feeding and loss effects |
| |
| 作者姓名： | 穆爱霞 周小燕 薛具奎 |
| |
| 作者单位： | College of Physics and Electronics Engineering, Northwest
Normal University, Lanzhou 730070, China;College of Physics and Electronics Engineering, Northwest
Normal University, Lanzhou 730070, China;College of Physics and Electronics Engineering, Northwest
Normal University, Lanzhou 730070, China |
| |
| 基金项目： | Project supported by
the National Natural Science Foundation of China (Grant Nos 10774120
and 10475066), the Natural Science Foundation of Gansu Province,
China (Grant No 3ZS051-A25-013), and the Natural Science Foundation
of Northwest Normal University of China (Grant No
NWNU-KJCXGC-03-17). |
| |
| 摘 要： | In this paper, we consider the macroscopic quantum tunnelling and self-trapping phenomena of Bose-Einstein condensates （BECs） with three-body recombination losses and atoms feeding from thermal cloud in triple-well potential. Using the three-mode approximation, three coupled Gross-Pitaevskii equations （GPEs）, which describe the dynamics of the system, are obtained. The corresponding numerical results reveal some interesting characteristics of BECs for different scattering lengths. The self-trapping and quantum tunnelling both are found in zero-phase and ：r-phase modes. Furthermore, we observe the quantum beating phenomenon and the resonance character during the self-trapping and quantum tunnelling. It is also shown that the initial phase has a significant effect on the dynamics of the system.
|
| 关 键 词： | 玻色-爱因斯坦凝聚态 三位重组 原子补充 量子诱捕 量子渠道 |
| 收稿时间： | 2007-04-27 |
| 修稿时间： | 2007-09-12 |
The dynamics of triple-well trapped Bose--Einstein condensates with atoms feeding and loss effects |
| |
| Mu Ai-Xi,Zhou Xiao-Yan and Xue Ju-Kui.The dynamics of triple-well trapped Bose-Einstein condensates with atoms feeding and loss effects[J].Chinese Physics B,2008,17(3):764-770. |
| |
| Authors: | Mu Ai-Xi Zhou Xiao-Yan and Xue Ju-Kui |
| |
| Institution: | College of Physics and Electronics Engineering, Northwest
Normal University, Lanzhou 730070, China |
| |
| Abstract: | In this paper, we consider the macroscopic quantum tunnelling and
self-trapping phenomena of Bose--Einstein condensates (BECs) with
three-body recombination losses and atoms feeding from thermal cloud
in triple-well potential. Using the three-mode approximation, three
coupled Gross--Pitaevskii equations (GPEs), which describe the
dynamics of the system, are obtained. The corresponding numerical
results reveal some interesting characteristics of BECs for
different scattering lengths. The self-trapping and quantum
tunnelling both are found in zero-phase and \pi-phase modes.
Furthermore, we observe the quantum beating phenomenon and the
resonance character during the self-trapping and quantum tunnelling.
It is also shown that the initial phase has a significant effect on
the dynamics of the system. |
| |
| Keywords: | Bose--Einstein condensates three-body recombination and atoms feeding quantum self-trapping quantum tunnelling |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
