三势阱中玻色-爱因斯坦凝聚的开关特性

Switch effect of Bose-Einstein condensates in a triple-well potential

应用平均场近似的方法,研究了弱耦合的三势阱中玻色-爱因斯坦凝聚的开关效应.当粒子置于左阱时,可以通过在中间势阱中加入少量粒子控制左阱粒子向右阱的隧穿,从而呈现出明显的导通与截止行为.对中间势阱的深度和相对相位的影响也进行了讨论,并指出了该理论模型的一些潜在应用前景.

We propose a scheme utilizing mean-field approach to exhibits the switching effect in a symmetrical Bose-Einstein condensate triple-well potential.Our study shows that tunneling from the left well to the right well of a large number of atoms can be controlled by a small amount of atoms in the middle well.We also discuss the role played by the relative phase and the relation between the zero-point and the critical value of working range.The potential applications of our model are pointed out.