Abstract:
Using integrated waveguide structures, integrated quantum photonic chips show us a high performance platform from which to further develop quantum technologies and experimental quantum physics using single photons. Quantum state preparation, manipulation, and measurement as well as the first on-chip quantum metrology experiments have been demonstrated based on silica-on-silicon waveguide. While the size of the silica-on-silicon waveguide cannot be smaller than wavelength due to the diffraction limit, and the manipulation of polarization that is one of the most important properties for light is still a challenge in integrated optical systems, since the propagation of light in dielectric waveguides is insensitive to the polarization. Surface plasmon, collective oscillating electrons excited by electromagnetic field at the interfaces between metals and dielectric materials, show us a potentional way to settle these problems. Surface plasmon can confine the electromagnetic energy at a nanoscale volume far beyond the diffraction limit in the visible and near infrared spectrum regime. It can also be exploited for polarization manipulation in the integrated optical circuits since the coupling between the light and surface plasmon is dependent on polarization. Here we focus on the investigations of foundmental integrated quantum photonic devices based on surface plasmon, including the plasmonic direction coupler, polarizer, polarization beam splitter, and so on. Our investigation will find potential usage in the future integrated quantum photonic chips.

任希锋，中国科学技术大学副教授，1980年11月出生。2001年和2006年于中国科学技术大学分别获学士和博士学位，博士导师郭光灿院士。2006年至2008年在中国科技大学中科院量子信息重点实验室从事博士后研究，2008年6月人才引进至光学与光学工程系任副教授。申请人一直从事量子信息和表面等离子体光学的实验研究，在此方面积累了丰富的实验经验，已在国内外重要学术刊物上（包括PRL，AFM，APL，OL，PR系列，JPCC等）发表论文三十余篇，总引用近200次，参加国际学术会议数次。目前主要从事表面等离子体在量子信息中的应用研究。2011年获得教育部新世纪优秀人才奖。