报告时间：2021年7月21日15:40-17:30
报告地点：包氏教学楼 8-203
讲座人：王志
报告摘要：
Topological Josephson junctions are distinct from conventional ones in that they host Majorana zero modes which form a two-level quantum system, the so-called Majorana qubit. The energies of the two levels are depending on the Josephson phase shift across the junction, while reversely the effective potential for the phase shift is controlled by the quantum state of the Majorana qubit. We build a quantum RSJ model to describe the interplay between the Majorana qubit and the classical Josephson phase shift. Within this model, we systematically study the properties of the topological junctions, including the I-V characteristics, the Josephson radiation, and the Shapiro steps. We also demonstrate how to use injected current to control the Josephson phase shift in the junction and build quantum gates for the Majorana qubit.
个人简介：
报告人简介：
王志，男，2010年获得北京师范大学博士学位，2010年至2012年在日本物质材料研究机构作博士后，2012年至今任中山大学物理学院副教授。研究领域包括高温超导电性理论、介观超导体系、拓扑超导体系等，目前的主要研究兴趣在拓扑超导隧道结中的动力学理论。