新型拓扑超导材料探索和Majorana准粒子物性精密探测

本项目所对应的重大研究计划资助方向为：“关键量子功能材料的可控制备与量子态体系的精准构筑“，主要研究目标为探索制备可用于拓扑量子计算的高质量异质结等材料，精确测量其中的Majorana零能模或其它非阿贝尔准粒子态。实现拓扑量子计算的重要途经是对Majorana零能模或准粒子态进行编织操作。虽然Majorana零能模已在若干体系中被发现，但还没实现有效的操纵。这一方面是由于材料体系自身的限制，另一方面是缺少对Majorana零能模物性的深入理解。本项目将从这两方面着手，通过原子级精度的材料构筑、原位调控等手段，寻找适合于拓扑量子计算的新型拓扑超导体系。同时利用高能量分辨的极低温STM和光电子能谱对Majorana准粒子物性进行精密探测，探索行之有效的操纵和编织的方法。

Manipulating and braiding the Majorana quasi-particles are critical for realizing topological quantum computation. Although Majorana zero modes have been observed in several topological superconducting systems recently, the braiding has not been achieved. This is partially due to the limitation of the materials and also the lacking of detailed knowledge of the properties of Majorana quasi-particles. In this project, we will explore new topological superconducting systems which are suitable for topological quantum computation, via high precision material construction, high-resolution experimental measurement and manipulation. We will study the physical properties of the Majorana quasi-particles through ultralow temperature STM and ARPES, and explore effective method for manipulating and braiding these quasi-particles.