实现量子态的纠缠和探测Majorana费米子不仅是凝聚态物理的基础研究目标，也是自旋电子学领域的重要挑战，两者都取决于自旋配对态。由于拓扑系统中的拓扑量子化自旋泵浦拥有克服极端条件的特点，因此我们拟在这个项目中，首先从理论上研究借助于拓扑体系的量子化自旋泵浦效应去实现自旋全极化的量子化电子纠缠流。同时, 我们准备进一步研究复合拓扑超导系统的自旋配对态的调控和自旋冻结，探索自旋全极化的拓扑约瑟夫森效应，并实现探测Majorana费米子。本项目的完成，对实现拓扑系统中的量子态的纠缠和对Majorana费米子的探测提供一定的理论帮助作用。

The realization of quantum entanglement and the detection of Majorana fermions, which are both determined by the spin pairing states, are not only the most fundamental research objects in quantum physics but also the important challenges in the field of spintronics. Because the topological quantized spin-pump can overcome extreme conditions, in this proposal, we will first theoretically explore the realization of the fully spin-polarized entanglement current by virtue of the quantized spin-pump effect in topological systems. The second object in this proposal is to study the manipulation of spin pairing states and to find the spin-frozen composite topological superconducting systems, then to explore fully spin-polarized topological Josephson effect and realize the detection of Majorana fermions. Our proposal shall in principle be helpful for the realization of quantum entanglement and the detection of Majorana fermions.