国际合作中心报告 2025年第23期
题目: Josephson Junction Arrays as a Platform for Topological Phases of Matter
时间: 2025年10月14日 16:00
报告人: Prof. Yuval Oreg

Weizmann Institute of Science

Abstract:

In this talk, I will briefly introduce topological states of matter and the basic ideas behind their robustness. I will then discuss practical routes to stabilizing topological superconductors using one‑and two‑dimensional arrays of Josephson junctions. The central tool is phase engineering: by tuning the superconducting phase differences—using minute magnetic fields or small bias currents—we can drive these arrays into topological regimes and maintain them there. I will outline simple theoretical models and experimentally realistic geometries, highlight the key control knobs, and describe expected signatures of the topological phase.

Brief CV of Prof. Yuval Oreg:

PhD completed at the Weizmann Institute and subsequently served as a Postdoctoral Fellow at Harvard. Since 2000,he has been a faculty member at the Weizmann Institute. His research encompasses the effects of correlated electrons in mesoscopic systems,with a current focus on topological superconductivity and interaction effects in van der Waals materials. He has made contributions to the realization of Majorana zero modes in wires.

报告地点:中关村D楼208

腾讯会议ID:837-758-605

会议密码:1014

邀请人:吕力 研究员 & 沈洁 研究员

联系人:傅琦 (82649469)