双模和自旋1的玻色-爱因斯坦凝聚体中的扭曲和存储纠缠
Twist-and-store entanglement in bimodal and spin-1 Bose-Einstein condensates
摘要：
在原子干涉测量的背景下，对双模和自旋1的玻色-爱因斯坦凝聚体的量子费舍尔信息量化的纠缠动力学稳定方案进行了数值和解析分析。该计划包括扭转动力学，其次是一个单一的旋转的状态，限制了进一步的演变周围的稳定中心不动点的平均场相空间。所产生的纠缠水平是旋转时刻的量级或更大。结果表明，奇偶校验的读出测量量化的纠缠在整个演化过程中的水平。
英文摘要：
A scheme for dynamical stabilization of entanglement quantified by the quantum Fisher information is analyzed numerically and analytically for bimodal and spin-1 Bose-Einstein condensates in the context of atomic interferometry. The scheme consists of twisting dynamics followed by a single rotation of a state which limits further evolution around stable center fixed points in the mean-field phase space. The resulting level of entanglement is of the order or larger than at the moment of rotation. It is demonstrated that the readout measurement of parity quantifies the level of entanglement during entire evolution.
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