报告题目

Boost Photonic Integration from Topological Perspective

报 告 人

彭超教授，北京大学

报告地点

腾讯会议ID：429 840 104

报告时间

2021年10月27日 (星期三) 15:10-18:00

联 系 人

胡小永(Tel: 62768705)

报告摘要

In recent years, photonic integration has attracted much attention owing to its revolutionary potentials in next-generation computing architecture. In this talk, the challenges and opportunities of applying topological concepts to on-chip photonic integration are review. In particular, we focus on a platform of photonic crystals. It is found that, the bound states in the continuum in such a system are essentially topological defects: the integer windings of polarization directions in momentum space. As a conserved quantity, the topological charge would last and continuously evolves with varying parameters, only if it drops out of the continuum, or annihilate with an opposite charge. The evolution of topological charge leads to a series of novel phenomena, which broadens the horizon of fundamental physics, as well as will boost the applications in many areas, such as on-chip lasers, sensors, and photonic integrations.

报告人简介

Prof. Peng received his Bachelor degree from Department of Physics, Peking University, 2004; and PhD from Department of Electronics, Peking University, 2009. After that, he worked as JSPS Postdoctoral Fellow in Kyoto University, Japan. He joined School of EECS, Peking University in 2012, and became Associate Professor since 2014. From 2017 to 2018，he worked as Visiting Scholar in MIT. His research interests include topological photonics, non-Hermitian photonics, and photonic integration. He had published over 80 peer-reviewed research articles on the journals including Science, Nature, Phys. Rev. Lett. He was selected as Excellent Youth Program of NSFC, 2019.