论文标题
控制二维驱动超晶格中粒子的涡旋运动
Controlling vortical motion of particles in two-dimensional driven superlattices
论文作者
论文摘要
我们证明了中性经典颗粒在驱动的超晶格中的涡旋运动的控制。我们的超晶格由单个晶格的叠加组成，其潜在的深度在及时定期调节但具有不同的阶段。这种驱动方案打破了空间反射对称性，并允许颗粒的合奏以平均角速度旋转。对潜在动力吸引子的分析提供了一种有效的方法，可以通过更改驱动幅度来控制颗粒的角速度。结果，可以创建显示出不同涡旋运动的颗粒的空间周期性模式。可能的实验实现包括用于胶体或冷原子的基于全息光学晶格的设置。
We demonstrate the control of vortical motion of neutral classical particles in driven superlattices. Our superlattice consists of a superposition of individual lattices whose potential depths are modulated periodically in time but with different phases. This driving scheme breaks the spatial reflection symmetries and allows an ensemble of particles to rotate with an average angular velocity. An analysis of the underlying dynamical attractors provides an efficient method to control the angular velocities of the particles by changing the driving amplitude. As a result, spatially periodic patterns of particles showing different vortical motion can be created. Possible experimental realizations include holographic optical lattice based setups for colloids or cold atoms.
