1、举办单位：理论物理研究所

2、活动主题：Spin photonics: from transverse spin to photonic skyrmions

3、活动形式：学术报告

4、活动摘要：Spin angular momentum associated with circular polarization is a fundamental and important aspect of photons both in classical and quantum optics. The interaction of this optical spin with matter and structures results in many intriguing optical effects and state-of-the-art applications covered under the emerging subject of spin optics. Distinct from longitudinal optical spin along the mean wavevector, transverse spin, the corresponding vector of which is perpendicular to the mean wavevector, prevails and plays a significant role in confined electromagnetic waves such as focused beams, guided waves, and evanescent waves. In the optical near-field, these transverse spins are generated owing to the spatial variation of the kinetic momentum of confined electromagnetic waves, where the spin and orbital angular momenta are strongly coupled, leading to many interesting topological spin structures and properties. Here, we introduce primarily the underlying physics and dynamics of transverse spin and the resultant topological structures and properties such as the photonic skyrmions and merons. We term this sub-area ‘spin pho-tonics’, its scope being to cover the design and research of spin structures in strongly confined electromagnetic fields with unique properties and applications. The concepts and framework reviewed have importance in optics, topological photonics, metrology, and quantum technologies and may be used to extend spin-dynamics concepts to fluidic, acoustic, elastic and gravitational waves.

5、主讲人简介：Dr. Shi, Peng received the Doctor’s degree from University of Science and Technology of China in 2012. He has been a research follow in the National University of Singapore during 2012-2015 and join the Shenzhen University from 2016. His research scopes include the singular light beams, optical spin-orbit interaction, spin dynamics, and his research works have been published in PNAS, Phys. Rev. Lett., Laser Photonics & Reviews, etc.

6、听众范围：感兴趣的师生

7、举办时间：2021/12/10

8、举办地点：腾讯会议ID646 745 962