论文标题
在对称和不对称势陷阱下的灰色/深色孤子行为和种群
Gray/dark soliton behavior and population under a symmetric and asymmetric potential trap
论文作者
论文摘要
我们从数值上研究高斯屏障高度和宽度对灰孤子种群中对称和不对称电位陷阱的影响。通过密度工程方法以双孔电势创建灰色孤子。两个相同的Bose-Einstein凝结物碎片被限制并通过在双孔电势下关闭高斯屏障来碰撞。我们发现，可以通过高斯屏障高度和宽度来操纵灰色孤子种群。我们还研究了灰色孤子人群对耦合强度的依赖。此外，我们还研究了双孔电势中存在的不对称性的影响。我们观察到，这种不对称性总是会挥舞灰色孤子的碰撞点。后来，通过相位印迹方法产生固定的深色孤子，我们观察到双孔电势陷阱中的初始不对称性将深色孤子设置为振荡。
We numerically study the impact of Gaussian barrier height and width on the gray solitons population in a symmetric and asymmetric potential trap. The gray solitons are created in a double-well potential by the density engineering method. Two identical Bose-Einstein condensate fragments are confined and made to collide by switching off the Gaussian barrier in a double-well potential. We find that the gray solitons population can be manipulated by Gaussian barrier height and width. We also study the gray solitons population dependence on the coupling strength. Moreover, we also study the impact of an asymmetry present in the double-well potential. We observe that such an asymmetry always swings the point of collision of the gray solitons. Later, a stationary dark soliton is created by the phase imprinting method and we observe that the initial asymmetry in the double-well potential trap sets the dark soliton into oscillation.
