Chong Guishu, Hai Wenhua, Xie Qiongtao
Department of Physics, Hunan Normal University, Changsha 410081, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Jan;71(1 Pt 2):016202. doi: 10.1103/PhysRevE.71.016202. Epub 2005 Jan 3.
The spatial structure of a Bose-Einstein condensate loaded into an optical lattice potential is investigated and the spatially chaotic distributions of the condensates are revealed under the tight-binding approximation. Adding a laser pulse on a proper site of the lattice and treating it as a control signal, control of the chaos in the system is carried out by using the Ott-Grebogi-Yorker scheme. For an appropriate laser pulse, we can suppress the chaos and push the system onto a stable manifold of a target orbit. After the control, a regular distribution, which may be expected in experiments or practical applications, of the condensates in the coordinate space is obtained.
研究了加载到光学晶格势中的玻色-爱因斯坦凝聚体的空间结构，并在紧束缚近似下揭示了凝聚体的空间混沌分布。在晶格的适当位置添加一个激光脉冲并将其视为控制信号，利用奥特-格雷博吉-约克（Ott-Grebogi-Yorker）方案对系统中的混沌进行控制。对于适当的激光脉冲，我们可以抑制混沌并将系统推到目标轨道的稳定流形上。控制之后，在坐标空间中获得了凝聚体的规则分布，这在实验或实际应用中是可以预期的。
