Controlling Chaos in a Bose-Einstein Condensate
The spatial structure of a Bose-Einstein condensate (BEC) loaded into an optical lattice potential is investigated and the spatially chaotic distributions of the condensates are revealed. Modulating laser intensity or frequency and treating them as control signal, control of the chaos in the system is carried out by using period-parameter-modulation. The chaotic behavior can be well controlled to enter into periodicity by modulating the laser intensity or frequency. Numerical simulation shows that there are different periodic orbits corresponding to different modulation intensity and modulating frequency only if the maximum Lyapunov exponent of the system is negative. The maximum Lyapunov exponent as a function of modulation intensity and modulating frequency is calculated respectively. The period is different for different modulation intensity at the same modulation frequency, or for different modulation frequency at the same modulation intensity.
controlling chaos Bose-Einstein condensate(BEC) period parameter modulation Lyapunov exponent
Wang Zhi-Xia Ni Zheng-Guo Cong Fu- Zhong Chen Lei Liu Xue- Shen
Fundamental Department, Aviation University of Air Force Changchun , P. R. China Institute of atomic and molecular physics, Jilin University, Changchun , P. R. China
国际会议
海口
英文
348-351
2011-02-22（万方平台首次上网日期，不代表论文的发表时间）