论文标题
通过Floquet Engineering生成孤子火车
Generating soliton trains through Floquet engineering
论文作者
论文摘要
我们研究在具有光学晶格电位的抛物线陷阱中固定在抛物线陷阱中的相互作用的超速玻色子的气体。我们将系统视为离散的毛皮大型模型，我们通过快速``摇动''floquet Engineering如何使系统的地面通过倒转能量的迹象将系统的地面转换为明亮的孤子。我们研究产生的孤子数量如何取决于系统的非线性和陷阱的曲率，显示如何在高和低驾驶频率方向上应用该技术，并证明该现象对噪声的稳定性。我们得出的结论是，Floquet方法是在冷原子系统中制备孤子的有用且稳定的方法。
We study a gas of interacting ultracold bosons held in a parabolic trap in the presence of an optical lattice potential. Treating the system as a discretised Gross-Pitaevskii model, we show how Floquet engineering, by rapidly ``shaking'' the lattice, allows the ground-state of the system to be converted into a train of bright solitons by inverting the sign of the hopping energy. We study how the number of solitons produced depends on the system's nonlinearity and the curvature of the trap, show how the technique can be applied both in the high and low driving-frequency regimes, and demonstrate the phenomenon's stability against noise. We conclude that the Floquet approach is a useful and stable method of preparing solitons in cold atom systems.
