报告人：王志 中山大学
时 间：2019年11月14号
星期四 下午2：30-3：30
地 点：国家脉冲强磁场科学中心C204
邀请人：徐刚
题 目：Intrinsic hysteresis of topological
Josephson junctions with Majorana zero modes
报告摘要：
Topological Josephson junctions are distinct from conventional ones in that they host Majorana bound states which form a two-level quantum system, the so-called Majorana qubit. The energies of the two levels are depending on the Josephson phase across the junction, while reversely the effective potential for the Josephson phase is controlled by the wave function of the Majorana qubit. We build a quantum resistively shunted junction model to describe the correlation between the Majorana qubit and the classical Josephson phase. Within this model, we study the I-V characteristics of the junction, and demonstrate an intrinsic hysteric behavior which is independent of the parameters of the junction. Our results are quantitatively in agreement with recent experiments.
报告人简介：
王志，中山大学副教授。2010年毕业于北京师范大学获得博士学位，2010-2012年在日本物质材料研究机构做博士后，2012年入职中山大学任副教授，2017-2018年在得克萨斯大学奥斯汀分校做访问学者。目前共发表论文20余篇，包括1篇PRL，6篇PR。
