标题： 具有两个耦合玻色-爱因斯坦凝聚体的广义相干态的生成 显示英文标题

标题： Generation of generalized coherent states with two coupled Bose-Einstein condensates

摘要： 我们提出了一种在具有两种玻色-爱因斯坦凝聚体的系统中制备广义相干态的方案。 首先，在双模近似下，我们证明可以动态生成类似于薛定谔猫态，并且通过控制类似于约瑟夫森的耦合强度，可以改变叠加态中的相干态数目。 随后，我们在抑制种间碰撞的情况下数值分析了整个系统的动力学。 使用诸如分数人口、曼德尔参数以及湮灭和数算符的方差等变量来表明演化后的状态是纠缠的，并表现出亚泊松统计特性。 显示英文摘要

摘要： We present a scheme to prepare generalized coherent states in a system with two species of Bose-Einstein condensates. First, within the two-mode approximation, we demonstrate that a Schrodinger cat-like can be dynamically generated and, by controlling the Josephson-like coupling strength, the number of coherent states in the superposition can be varied. Later, we analyze numerically the dynamics of the whole system when interspecies collisions are inhibited. Variables such as fractional population, Mandel parameter and variances of annihilation and number operators are used to show that the evolved state is entangled and exhibits sub-Poisson statistics.