首页 | 本学科首页   官方微博 | 高级检索  
     

旋转二维光晶格中玻色-爱因斯坦凝聚体量子涡旋研究
引用本文:季程超,徐志君. 旋转二维光晶格中玻色-爱因斯坦凝聚体量子涡旋研究[J]. 量子电子学报, 2016, 33(6): 697-703. DOI: 10.3969/j.issn.1007-5461.2016.06.008
作者姓名:季程超  徐志君
作者单位:浙江工业大学应用物理系, 浙江 杭州 310023
基金项目:Supported by Natural Science Foundation of Zhejiang Province(浙江省自然科学基金
摘    要:基于Gross–Pitaevskii(G-P)方程的数值模拟,研究了旋转二维光晶格中玻色-爱因斯坦凝聚气体量子涡旋的动力学性质,分析了光晶格常数d、光晶格深度 对量子涡旋的影响。结果表明:随 增加量子涡旋形成过程变快,通过计算系统自由能随时间的演化分析了这一动力学行为的物理本质; 大于50时出现针钉效应,即量子涡旋被光晶格固定在势能极值点;d大于2.7dc(dc为临界常数)时出现涡旋-反涡旋对。

关 键 词:量子光学;量子涡旋;Gross-Pitaevskii方程;临界光晶格常数
收稿时间:2015-10-08
修稿时间:2016-01-22

Quantum vortex of Bose-Einstein condensate in rotating two-dimensional optical lattice
JI Chengchao,XU Zhijun. Quantum vortex of Bose-Einstein condensate in rotating two-dimensional optical lattice[J]. Chinese Journal of Quantum Electronics, 2016, 33(6): 697-703. DOI: 10.3969/j.issn.1007-5461.2016.06.008
Authors:JI Chengchao  XU Zhijun
Affiliation:Department of Applied Physics, Zhejiang University of Technology, Hangzhou 310023, China
Abstract:Based on numerical simulation of the Gross–Pitaevskii(G-P) equation, the dynamical properties of Bose–Einstein condensed gas quantum vortex in a rotating two-dimensional optical lattice are investigated. Influences of optical lattice constant d and optical lattice depth on quantum vortex are analyzed. Results show that the formation process of quantum vortex becomes faster with increasing of . The physical essence of this dynamic behavior is analyzed by calculating the evolution of system free energy with time. When is more than 50, there is pinning effect. That is to say, the quantum vortex is fixed on the extreme point of potential energy by optical lattice. When d is greater than 2.7dc (dc is the critical constant), the vortex-antivortex pairs are found.
Keywords:quantum optics  quantum vortex  Gross-Pitaevskii equation  critical optical lattice constant
本文献已被 万方数据 等数据库收录!
点击此处可从《量子电子学报》浏览原始摘要信息
点击此处可从《量子电子学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号